Merge pull request 'fix: refractor card art post-merge fixes — cache bypass, template guards, dev server' (#180) from fix/refractor-card-art-followup into main

- Skip PNG cache when ?tier= param is set to prevent serving stale T0 images
- Move {% if %} guard before diamond_colors dict in player_card.html
- Extract base #fullCard styles outside refractor conditional in tier_style.html
- Make run-local.sh DB host configurable, clean up Playwright check

Follow-up to PR #179

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -59,6 +59,8 @@ pyenv.cfg
 pyvenv.cfg
 docker-compose.override.yml
 docker-compose.*.yml
+.run-local.pid
+.env.local
 *.db
 venv
 .claude/

app/db_engine.py

@@ -474,6 +474,7 @@ class Card(BaseModel):
     team = ForeignKeyField(Team, null=True)
     pack = ForeignKeyField(Pack, null=True)
     value = IntegerField(default=0)
+    variant = IntegerField(null=True, default=None)
 
     def __str__(self):
         if self.player:
@@ -755,6 +756,7 @@ class BattingCard(BaseModel):
     running = IntegerField()
     offense_col = IntegerField()
     hand = CharField(default="R")
+    image_url = CharField(null=True, max_length=500)
 
     class Meta:
         database = db
@@ -824,6 +826,7 @@ class PitchingCard(BaseModel):
     batting = CharField(null=True)
     offense_col = IntegerField()
     hand = CharField(default="R")
+    image_url = CharField(null=True, max_length=500)
 
     class Meta:
         database = db
@@ -1232,6 +1235,7 @@ class RefractorCardState(BaseModel):
     current_value = FloatField(default=0.0)
     fully_evolved = BooleanField(default=False)
     last_evaluated_at = DateTimeField(null=True)
+    variant = IntegerField(null=True)
 
     class Meta:
         database = db
@@ -1245,6 +1249,13 @@ refractor_card_state_index = ModelIndex(
 )
 RefractorCardState.add_index(refractor_card_state_index)
 
+refractor_card_state_team_index = ModelIndex(
+    RefractorCardState,
+    (RefractorCardState.team,),
+    unique=False,
+)
+RefractorCardState.add_index(refractor_card_state_team_index)
+
 
 class RefractorTierBoost(BaseModel):
     track = ForeignKeyField(RefractorTrack)
@@ -1283,9 +1294,29 @@ class RefractorCosmetic(BaseModel):
         table_name = "refractor_cosmetic"
 
 
+class RefractorBoostAudit(BaseModel):
+    card_state = ForeignKeyField(RefractorCardState, on_delete="CASCADE")
+    tier = IntegerField()  # 1-4
+    battingcard = ForeignKeyField(BattingCard, null=True)
+    pitchingcard = ForeignKeyField(PitchingCard, null=True)
+    variant_created = IntegerField()
+    boost_delta_json = TextField()  # JSONB in PostgreSQL; TextField for SQLite test compat
+    applied_at = DateTimeField(default=datetime.now)
+
+    class Meta:
+        database = db
+        table_name = "refractor_boost_audit"
+
+
 if not SKIP_TABLE_CREATION:
     db.create_tables(
-        [RefractorTrack, RefractorCardState, RefractorTierBoost, RefractorCosmetic],
+        [
+            RefractorTrack,
+            RefractorCardState,
+            RefractorTierBoost,
+            RefractorCosmetic,
+            RefractorBoostAudit,
+        ],
         safe=True,
     )
 

app/routers_v2/cardpositions.py

@@ -51,6 +51,7 @@ async def get_card_positions(
     cardset_id: list = Query(default=None),
     short_output: Optional[bool] = False,
     sort: Optional[str] = "innings-desc",
+    limit: int = 100,
 ):
     all_pos = (
         CardPosition.select()
@@ -86,6 +87,9 @@ async def get_card_positions(
     elif sort == "range-asc":
         all_pos = all_pos.order_by(CardPosition.range, CardPosition.id)
 
+    limit = max(0, min(limit, 500))
+    all_pos = all_pos.limit(limit)
+
     return_val = {
         "count": all_pos.count(),
         "positions": [model_to_dict(x, recurse=not short_output) for x in all_pos],

app/routers_v2/paperdex.py

@@ -9,34 +9,36 @@ from ..db_engine import Paperdex, model_to_dict, Player, Cardset, Team, DoesNotE
 from ..dependencies import oauth2_scheme, valid_token
 
 
-router = APIRouter(
-    prefix='/api/v2/paperdex',
-    tags=['paperdex']
-)
+router = APIRouter(prefix="/api/v2/paperdex", tags=["paperdex"])
 
 
 class PaperdexModel(pydantic.BaseModel):
     team_id: int
     player_id: int
-    created: Optional[int] = int(datetime.timestamp(datetime.now())*1000)
+    created: Optional[int] = int(datetime.timestamp(datetime.now()) * 1000)
 
 
-@router.get('')
+@router.get("")
 async def get_paperdex(
-        team_id: Optional[int] = None, player_id: Optional[int] = None, created_after: Optional[int] = None,
-        cardset_id: Optional[int] = None, created_before: Optional[int] = None, flat: Optional[bool] = False,
-        csv: Optional[bool] = None):
+    team_id: Optional[int] = None,
+    player_id: Optional[int] = None,
+    created_after: Optional[int] = None,
+    cardset_id: Optional[int] = None,
+    created_before: Optional[int] = None,
+    flat: Optional[bool] = False,
+    csv: Optional[bool] = None,
+    limit: int = 100,
+):
     all_dex = Paperdex.select().join(Player).join(Cardset).order_by(Paperdex.id)
 
     if all_dex.count() == 0:
-        raise HTTPException(status_code=404, detail=f'There are no paperdex to filter')
+        raise HTTPException(status_code=404, detail="There are no paperdex to filter")
 
     if team_id is not None:
         all_dex = all_dex.where(Paperdex.team_id == team_id)
     if player_id is not None:
         all_dex = all_dex.where(Paperdex.player_id == player_id)
     if cardset_id is not None:
-        all_sets = Cardset.select().where(Cardset.id == cardset_id)
         all_dex = all_dex.where(Paperdex.player.cardset.id == cardset_id)
     if created_after is not None:
         # Convert milliseconds timestamp to datetime for PostgreSQL comparison
@@ -51,57 +53,62 @@ async def get_paperdex(
     #     db.close()
     #     raise HTTPException(status_code=404, detail=f'No paperdex found')
 
+    limit = max(0, min(limit, 500))
+    all_dex = all_dex.limit(limit)
+
     if csv:
-        data_list = [['id', 'team_id', 'player_id', 'created']]
+        data_list = [["id", "team_id", "player_id", "created"]]
         for line in all_dex:
             data_list.append(
-                [
-                    line.id, line.team.id, line.player.player_id, line.created
-                ]
+                [line.id, line.team.id, line.player.player_id, line.created]
             )
         return_val = DataFrame(data_list).to_csv(header=False, index=False)
 
-        return Response(content=return_val, media_type='text/csv')
+        return Response(content=return_val, media_type="text/csv")
 
     else:
-        return_val = {'count': all_dex.count(), 'paperdex': []}
+        return_val = {"count": all_dex.count(), "paperdex": []}
         for x in all_dex:
-            return_val['paperdex'].append(model_to_dict(x, recurse=not flat))
+            return_val["paperdex"].append(model_to_dict(x, recurse=not flat))
 
         return return_val
 
 
-@router.get('/{paperdex_id}')
+@router.get("/{paperdex_id}")
 async def get_one_paperdex(paperdex_id, csv: Optional[bool] = False):
     try:
         this_dex = Paperdex.get_by_id(paperdex_id)
     except DoesNotExist:
-        raise HTTPException(status_code=404, detail=f'No paperdex found with id {paperdex_id}')
+        raise HTTPException(
+            status_code=404, detail=f"No paperdex found with id {paperdex_id}"
+        )
 
     if csv:
         data_list = [
-            ['id', 'team_id', 'player_id', 'created'],
-            [this_dex.id, this_dex.team.id, this_dex.player.id, this_dex.created]
+            ["id", "team_id", "player_id", "created"],
+            [this_dex.id, this_dex.team.id, this_dex.player.id, this_dex.created],
         ]
         return_val = DataFrame(data_list).to_csv(header=False, index=False)
 
-        return Response(content=return_val, media_type='text/csv')
+        return Response(content=return_val, media_type="text/csv")
 
     else:
         return_val = model_to_dict(this_dex)
         return return_val
 
 
-@router.post('')
+@router.post("")
 async def post_paperdex(paperdex: PaperdexModel, token: str = Depends(oauth2_scheme)):
     if not valid_token(token):
-        logging.warning('Bad Token: [REDACTED]')
+        logging.warning("Bad Token: [REDACTED]")
         raise HTTPException(
             status_code=401,
-            detail='You are not authorized to post paperdex. This event has been logged.'
+            detail="You are not authorized to post paperdex. This event has been logged.",
         )
 
-    dupe_dex = Paperdex.get_or_none(Paperdex.team_id == paperdex.team_id, Paperdex.player_id == paperdex.player_id)
+    dupe_dex = Paperdex.get_or_none(
+        Paperdex.team_id == paperdex.team_id, Paperdex.player_id == paperdex.player_id
+    )
     if dupe_dex:
         return_val = model_to_dict(dupe_dex)
         return return_val
@@ -109,7 +116,7 @@ async def post_paperdex(paperdex: PaperdexModel, token: str = Depends(oauth2_sch
     this_dex = Paperdex(
         team_id=paperdex.team_id,
         player_id=paperdex.player_id,
-        created=datetime.fromtimestamp(paperdex.created / 1000)
+        created=datetime.fromtimestamp(paperdex.created / 1000),
     )
 
     saved = this_dex.save()
@@ -119,24 +126,30 @@ async def post_paperdex(paperdex: PaperdexModel, token: str = Depends(oauth2_sch
     else:
         raise HTTPException(
             status_code=418,
-            detail='Well slap my ass and call me a teapot; I could not save that dex'
+            detail="Well slap my ass and call me a teapot; I could not save that dex",
         )
 
 
-@router.patch('/{paperdex_id}')
+@router.patch("/{paperdex_id}")
 async def patch_paperdex(
-        paperdex_id, team_id: Optional[int] = None, player_id: Optional[int] = None, created: Optional[int] = None,
-        token: str = Depends(oauth2_scheme)):
+    paperdex_id,
+    team_id: Optional[int] = None,
+    player_id: Optional[int] = None,
+    created: Optional[int] = None,
+    token: str = Depends(oauth2_scheme),
+):
     if not valid_token(token):
-        logging.warning('Bad Token: [REDACTED]')
+        logging.warning("Bad Token: [REDACTED]")
         raise HTTPException(
             status_code=401,
-            detail='You are not authorized to patch paperdex. This event has been logged.'
+            detail="You are not authorized to patch paperdex. This event has been logged.",
         )
     try:
         this_dex = Paperdex.get_by_id(paperdex_id)
     except DoesNotExist:
-        raise HTTPException(status_code=404, detail=f'No paperdex found with id {paperdex_id}')
+        raise HTTPException(
+            status_code=404, detail=f"No paperdex found with id {paperdex_id}"
+        )
 
     if team_id is not None:
         this_dex.team_id = team_id
@@ -151,40 +164,43 @@ async def patch_paperdex(
     else:
         raise HTTPException(
             status_code=418,
-            detail='Well slap my ass and call me a teapot; I could not save that rarity'
+            detail="Well slap my ass and call me a teapot; I could not save that rarity",
         )
 
 
-@router.delete('/{paperdex_id}')
+@router.delete("/{paperdex_id}")
 async def delete_paperdex(paperdex_id, token: str = Depends(oauth2_scheme)):
     if not valid_token(token):
-        logging.warning('Bad Token: [REDACTED]')
+        logging.warning("Bad Token: [REDACTED]")
         raise HTTPException(
             status_code=401,
-            detail='You are not authorized to delete rewards. This event has been logged.'
+            detail="You are not authorized to delete rewards. This event has been logged.",
         )
     try:
         this_dex = Paperdex.get_by_id(paperdex_id)
     except DoesNotExist:
-        raise HTTPException(status_code=404, detail=f'No paperdex found with id {paperdex_id}')
+        raise HTTPException(
+            status_code=404, detail=f"No paperdex found with id {paperdex_id}"
+        )
 
     count = this_dex.delete_instance()
 
     if count == 1:
-        raise HTTPException(status_code=200, detail=f'Paperdex {this_dex} has been deleted')
-    else:
-        raise HTTPException(status_code=500, detail=f'Paperdex {this_dex} was not deleted')
-
-
-@router.post('/wipe-ai')
-async def wipe_ai_paperdex(token: str = Depends(oauth2_scheme)):
-    if not valid_token(token):
-        logging.warning('Bad Token: [REDACTED]')
         raise HTTPException(
-            status_code=401,
-            detail='Unauthorized'
+            status_code=200, detail=f"Paperdex {this_dex} has been deleted"
+        )
+    else:
+        raise HTTPException(
+            status_code=500, detail=f"Paperdex {this_dex} was not deleted"
         )
 
-    g_teams = Team.select().where(Team.abbrev.contains('Gauntlet'))
+
+@router.post("/wipe-ai")
+async def wipe_ai_paperdex(token: str = Depends(oauth2_scheme)):
+    if not valid_token(token):
+        logging.warning("Bad Token: [REDACTED]")
+        raise HTTPException(status_code=401, detail="Unauthorized")
+
+    g_teams = Team.select().where(Team.abbrev.contains("Gauntlet"))
     count = Paperdex.delete().where(Paperdex.team << g_teams).execute()
-    return f'Deleted {count} records'
+    return f"Deleted {count} records"

app/routers_v2/players.py

@@ -32,6 +32,7 @@ from ..db_engine import (
 )
 from ..db_helpers import upsert_players
 from ..dependencies import oauth2_scheme, valid_token
+from ..services.refractor_boost import compute_variant_hash
 
 # ---------------------------------------------------------------------------
 # Persistent browser instance (WP-02)
@@ -132,6 +133,19 @@ def normalize_franchise(franchise: str) -> str:
     return FRANCHISE_NORMALIZE.get(titled, titled)
 
 
+def resolve_refractor_tier(player_id: int, variant: int) -> int:
+    """Determine the refractor tier (0-4) from a player's variant hash.
+
+    Pure math — no DB query needed. Returns 0 for base cards or unknown variants.
+    """
+    if variant == 0:
+        return 0
+    for tier in range(1, 5):
+        if compute_variant_hash(player_id, tier) == variant:
+            return tier
+    return 0
+
+
 router = APIRouter(prefix="/api/v2/players", tags=["players"])
 
 
@@ -723,6 +737,9 @@ async def get_batter_card(
     variant: int = 0,
     d: str = None,
     html: Optional[bool] = False,
+    tier: Optional[int] = Query(
+        None, ge=0, le=4, description="Override refractor tier for preview (dev only)"
+    ),
 ):
     try:
         this_player = Player.get_by_id(player_id)
@@ -740,6 +757,7 @@ async def get_batter_card(
             f"storage/cards/cardset-{this_player.cardset.id}/{card_type}/{player_id}-{d}-v{variant}.png"
         )
         and html is False
+        and tier is None
     ):
         return FileResponse(
             path=f"storage/cards/cardset-{this_player.cardset.id}/{card_type}/{player_id}-{d}-v{variant}.png",
@@ -786,6 +804,9 @@ async def get_batter_card(
             card_data["cardset_name"] = this_player.cardset.name
         else:
             card_data["cardset_name"] = this_player.description
+        card_data["refractor_tier"] = (
+            tier if tier is not None else resolve_refractor_tier(player_id, variant)
+        )
         card_data["request"] = request
         html_response = templates.TemplateResponse("player_card.html", card_data)
 
@@ -823,6 +844,9 @@ async def get_batter_card(
             card_data["cardset_name"] = this_player.cardset.name
         else:
             card_data["cardset_name"] = this_player.description
+        card_data["refractor_tier"] = (
+            tier if tier is not None else resolve_refractor_tier(player_id, variant)
+        )
         card_data["request"] = request
         html_response = templates.TemplateResponse("player_card.html", card_data)
 

app/routers_v2/refractor.py

@@ -1,9 +1,12 @@
+import os
+
 from fastapi import APIRouter, Depends, HTTPException, Query
 import logging
 from typing import Optional
 
 from ..db_engine import model_to_dict
 from ..dependencies import oauth2_scheme, valid_token
+from ..services.refractor_init import initialize_card_refractor, _determine_card_type
 
 logger = logging.getLogger(__name__)
 
@@ -21,14 +24,15 @@ _NEXT_THRESHOLD_ATTR = {
 }
 
 
-def _build_card_state_response(state) -> dict:
+def _build_card_state_response(state, player_name=None) -> dict:
     """Serialise a RefractorCardState into the standard API response shape.
 
     Produces a flat dict with player_id and team_id as plain integers,
-    a nested 'track' dict with all threshold fields, and a computed
-    'next_threshold' field:
-      - For tiers 0-3: the threshold value for the tier immediately above.
-      - For tier 4 (fully evolved): None.
+    a nested 'track' dict with all threshold fields, and computed fields:
+      - 'next_threshold': threshold for the tier immediately above (None when fully evolved).
+      - 'progress_pct': current_value / next_threshold * 100, rounded to 1 decimal
+        (None when fully evolved or next_threshold is zero).
+      - 'player_name': included when passed (e.g. from a list join); omitted otherwise.
 
     Uses model_to_dict(recurse=False) internally so FK fields are returned
     as IDs rather than nested objects, then promotes the needed IDs up to
@@ -40,19 +44,31 @@ def _build_card_state_response(state) -> dict:
     next_attr = _NEXT_THRESHOLD_ATTR.get(state.current_tier)
     next_threshold = getattr(track, next_attr) if next_attr else None
 
-    return {
+    progress_pct = None
+    if next_threshold is not None and next_threshold > 0:
+        progress_pct = round((state.current_value / next_threshold) * 100, 1)
+
+    result = {
         "player_id": state.player_id,
         "team_id": state.team_id,
         "current_tier": state.current_tier,
         "current_value": state.current_value,
         "fully_evolved": state.fully_evolved,
         "last_evaluated_at": (
-            state.last_evaluated_at.isoformat() if state.last_evaluated_at else None
+            state.last_evaluated_at.isoformat()
+            if hasattr(state.last_evaluated_at, "isoformat")
+            else state.last_evaluated_at or None
         ),
         "track": track_dict,
         "next_threshold": next_threshold,
+        "progress_pct": progress_pct,
     }
 
+    if player_name is not None:
+        result["player_name"] = player_name
+
+    return result
+
 
 @router.get("/tracks")
 async def list_tracks(
@@ -89,6 +105,125 @@ async def get_track(track_id: int, token: str = Depends(oauth2_scheme)):
     return model_to_dict(track, recurse=False)
 
 
+@router.get("/cards")
+async def list_card_states(
+    team_id: int = Query(...),
+    card_type: Optional[str] = Query(default=None),
+    tier: Optional[int] = Query(default=None, ge=0, le=4),
+    season: Optional[int] = Query(default=None),
+    progress: Optional[str] = Query(default=None),
+    evaluated_only: bool = Query(default=True),
+    limit: int = Query(default=10, ge=1, le=100),
+    offset: int = Query(default=0, ge=0),
+    token: str = Depends(oauth2_scheme),
+):
+    """List RefractorCardState rows for a team, with optional filters and pagination.
+
+    Required:
+      team_id        -- filter to this team's cards; returns empty list if team has no states
+
+    Optional filters:
+      card_type      -- one of 'batter', 'sp', 'rp'; filters by RefractorTrack.card_type
+      tier           -- filter by current_tier (0-4)
+      season         -- filter to players who have batting or pitching season stats in that
+                        season (EXISTS subquery against batting/pitching_season_stats)
+      progress       -- 'close' = only cards within 80% of their next tier threshold;
+                        fully evolved cards are always excluded from this filter
+      evaluated_only -- default True; when True, excludes cards where last_evaluated_at
+                        is NULL (cards created but never run through the evaluator).
+                        Set to False to include all rows, including zero-value placeholders.
+
+    Pagination:
+      limit     -- page size (1-100, default 10)
+      offset    -- items to skip (default 0)
+
+    Response: {"count": N, "items": [...]}
+      count is the total matching rows before limit/offset.
+      Each item includes player_name and progress_pct in addition to the
+      standard single-card response fields.
+
+    Sort order: current_tier DESC, current_value DESC.
+    """
+    if not valid_token(token):
+        logging.warning("Bad Token: [REDACTED]")
+        raise HTTPException(status_code=401, detail="Unauthorized")
+
+    from ..db_engine import (
+        RefractorCardState,
+        RefractorTrack,
+        Player,
+        BattingSeasonStats,
+        PitchingSeasonStats,
+        fn,
+        Case,
+        JOIN,
+    )
+
+    query = (
+        RefractorCardState.select(RefractorCardState, RefractorTrack, Player)
+        .join(RefractorTrack)
+        .switch(RefractorCardState)
+        .join(
+            Player, JOIN.LEFT_OUTER, on=(RefractorCardState.player == Player.player_id)
+        )
+        .where(RefractorCardState.team == team_id)
+        .order_by(
+            RefractorCardState.current_tier.desc(),
+            RefractorCardState.current_value.desc(),
+        )
+    )
+
+    if card_type is not None:
+        query = query.where(RefractorTrack.card_type == card_type)
+
+    if tier is not None:
+        query = query.where(RefractorCardState.current_tier == tier)
+
+    if season is not None:
+        batter_exists = BattingSeasonStats.select().where(
+            (BattingSeasonStats.player == RefractorCardState.player)
+            & (BattingSeasonStats.team == RefractorCardState.team)
+            & (BattingSeasonStats.season == season)
+        )
+        pitcher_exists = PitchingSeasonStats.select().where(
+            (PitchingSeasonStats.player == RefractorCardState.player)
+            & (PitchingSeasonStats.team == RefractorCardState.team)
+            & (PitchingSeasonStats.season == season)
+        )
+        query = query.where(fn.EXISTS(batter_exists) | fn.EXISTS(pitcher_exists))
+
+    if progress == "close":
+        next_threshold_expr = Case(
+            RefractorCardState.current_tier,
+            (
+                (0, RefractorTrack.t1_threshold),
+                (1, RefractorTrack.t2_threshold),
+                (2, RefractorTrack.t3_threshold),
+                (3, RefractorTrack.t4_threshold),
+            ),
+            None,
+        )
+        query = query.where(
+            (RefractorCardState.fully_evolved == False)  # noqa: E712
+            & (RefractorCardState.current_value >= next_threshold_expr * 0.8)
+        )
+
+    if evaluated_only:
+        query = query.where(RefractorCardState.last_evaluated_at.is_null(False))
+
+    total = query.count()
+    items = []
+    for state in query.offset(offset).limit(limit):
+        player_name = None
+        try:
+            player_name = state.player.p_name
+        except Exception:
+            pass
+        items.append(_build_card_state_response(state, player_name=player_name))
+
+    return {"count": total, "items": items}
+
+
 @router.get("/cards/{card_id}")
 async def get_card_state(card_id: int, token: str = Depends(oauth2_scheme)):
     """Return the RefractorCardState for a card identified by its Card.id.
@@ -168,14 +303,16 @@ async def evaluate_game(game_id: int, token: str = Depends(oauth2_scheme)):
 
     Finds all unique (player_id, team_id) pairs from the game's StratPlay rows,
     then for each pair that has a RefractorCardState, re-computes the refractor
-    tier. Pairs without a state row are silently skipped. Per-player errors are
-    logged but do not abort the batch.
+    tier. Pairs without a state row are auto-initialized on-the-fly via
+    initialize_card_refractor (idempotent). Per-player errors are logged but
+    do not abort the batch.
     """
     if not valid_token(token):
         logging.warning("Bad Token: [REDACTED]")
         raise HTTPException(status_code=401, detail="Unauthorized")
 
-    from ..db_engine import RefractorCardState, RefractorTrack, Player, StratPlay
+    from ..db_engine import RefractorCardState, Player, StratPlay
+    from ..services.refractor_boost import apply_tier_boost
     from ..services.refractor_evaluator import evaluate_card
 
     plays = list(StratPlay.select().where(StratPlay.game == game_id))
@@ -190,6 +327,8 @@ async def evaluate_game(game_id: int, token: str = Depends(oauth2_scheme)):
     evaluated = 0
     tier_ups = []
 
+    boost_enabled = os.environ.get("REFRACTOR_BOOST_ENABLED", "true").lower() != "false"
+
     for player_id, team_id in pairs:
         try:
             state = RefractorCardState.get_or_none(
@@ -197,14 +336,29 @@ async def evaluate_game(game_id: int, token: str = Depends(oauth2_scheme)):
                 & (RefractorCardState.team_id == team_id)
             )
             if state is None:
-                continue
+                try:
+                    player = Player.get_by_id(player_id)
+                    card_type = _determine_card_type(player)
+                    state = initialize_card_refractor(player_id, team_id, card_type)
+                except Exception:
+                    logger.warning(
+                        f"Refractor auto-init failed for player={player_id} "
+                        f"team={team_id} — skipping"
+                    )
+                if state is None:
+                    continue
 
             old_tier = state.current_tier
-            result = evaluate_card(player_id, team_id)
+            # Use dry_run=True so that current_tier is NOT written here.
+            # apply_tier_boost() writes current_tier + variant atomically on
+            # tier-up.  If no tier-up occurs, apply_tier_boost is not called
+            # and the tier stays at old_tier (correct behaviour).
+            result = evaluate_card(player_id, team_id, dry_run=True)
             evaluated += 1
 
-            new_tier = result.get("current_tier", old_tier)
-            if new_tier > old_tier:
+            # Use computed_tier (what the formula says) to detect tier-ups.
+            computed_tier = result.get("computed_tier", old_tier)
+            if computed_tier > old_tier:
                 player_name = "Unknown"
                 try:
                     p = Player.get_by_id(player_id)
@@ -212,17 +366,66 @@ async def evaluate_game(game_id: int, token: str = Depends(oauth2_scheme)):
                 except Exception:
                     pass
 
-                tier_ups.append(
-                    {
-                        "player_id": player_id,
-                        "team_id": team_id,
-                        "player_name": player_name,
-                        "old_tier": old_tier,
-                        "new_tier": new_tier,
-                        "current_value": result.get("current_value", 0),
-                        "track_name": state.track.name if state.track else "Unknown",
-                    }
-                )
+                # Phase 2: Apply rating boosts for each tier gained.
+                # apply_tier_boost() writes current_tier + variant atomically.
+                # If it fails, current_tier stays at old_tier — automatic retry next game.
+                boost_result = None
+                if not boost_enabled:
+                    # Boost disabled via REFRACTOR_BOOST_ENABLED=false.
+                    # Skip notification — current_tier was not written (dry_run),
+                    # so reporting a tier-up would be a false notification.
+                    continue
+
+                card_type = state.track.card_type if state.track else None
+                if card_type:
+                    last_successful_tier = old_tier
+                    failing_tier = old_tier + 1
+                    try:
+                        for tier in range(old_tier + 1, computed_tier + 1):
+                            failing_tier = tier
+                            boost_result = apply_tier_boost(
+                                player_id, team_id, tier, card_type
+                            )
+                            last_successful_tier = tier
+                    except Exception as boost_exc:
+                        logger.warning(
+                            f"Refractor boost failed for player={player_id} "
+                            f"team={team_id} tier={failing_tier}: {boost_exc}"
+                        )
+                        # Report only the tiers that actually succeeded.
+                        # If none succeeded, skip the tier_up notification entirely.
+                        if last_successful_tier == old_tier:
+                            continue
+                        # At least one intermediate tier was committed; report that.
+                        computed_tier = last_successful_tier
+                else:
+                    # No card_type means no track — skip boost and skip notification.
+                    # A false tier-up notification must not be sent when the boost
+                    # was never applied (current_tier was never written to DB).
+                    logger.warning(
+                        f"Refractor boost skipped for player={player_id} "
+                        f"team={team_id}: no card_type on track"
+                    )
+                    continue
+
+                tier_up_entry = {
+                    "player_id": player_id,
+                    "team_id": team_id,
+                    "player_name": player_name,
+                    "old_tier": old_tier,
+                    "new_tier": computed_tier,
+                    "current_value": result.get("current_value", 0),
+                    "track_name": state.track.name if state.track else "Unknown",
+                }
+
+                # Non-breaking addition: include boost info when available.
+                if boost_result:
+                    tier_up_entry["variant_created"] = boost_result.get(
+                        "variant_created"
+                    )
+
+                tier_ups.append(tier_up_entry)
+
         except Exception as exc:
             logger.warning(
                 f"Refractor eval failed for player={player_id} team={team_id}: {exc}"

app/services/refractor_boost.py

@@ -0,0 +1,698 @@
+"""Refractor rating boost service (Phase 2).
+
+Pure functions for computing boosted card ratings when a player
+reaches a new Refractor tier.  The module-level 'db' variable is used by
+apply_tier_boost() for atomic writes; tests patch this reference to redirect
+writes to a shared-memory SQLite database.
+
+Batter boost: fixed +0.5 to four offensive columns per tier.
+Pitcher boost: 1.5 TB-budget priority algorithm per tier.
+"""
+
+from decimal import Decimal, ROUND_HALF_UP
+import hashlib
+import json
+import logging
+
+# Module-level db reference imported lazily so that this module can be
+# imported before app.db_engine is fully initialised (e.g. in tests that
+# patch DATABASE_TYPE before importing db_engine).
+# Tests that need to redirect DB writes should patch this attribute at module
+# level: `import app.services.refractor_boost as m; m.db = test_db`.
+db = None
+
+
+def _get_db():
+    """Return the module-level db, importing lazily on first use."""
+    global db
+    if db is None:
+        from app.db_engine import db as _db  # noqa: PLC0415
+
+        db = _db
+    return db
+
+
+logger = logging.getLogger(__name__)
+
+# ---------------------------------------------------------------------------
+# Batter constants
+# ---------------------------------------------------------------------------
+
+BATTER_POSITIVE_DELTAS: dict[str, Decimal] = {
+    "homerun": Decimal("0.50"),
+    "double_pull": Decimal("0.50"),
+    "single_one": Decimal("0.50"),
+    "walk": Decimal("0.50"),
+}
+
+BATTER_NEGATIVE_DELTAS: dict[str, Decimal] = {
+    "strikeout": Decimal("-1.50"),
+    "groundout_a": Decimal("-0.50"),
+}
+
+# All 22 outcome columns that must sum to 108.
+BATTER_OUTCOME_COLUMNS: list[str] = [
+    "homerun",
+    "bp_homerun",
+    "triple",
+    "double_three",
+    "double_two",
+    "double_pull",
+    "single_two",
+    "single_one",
+    "single_center",
+    "bp_single",
+    "hbp",
+    "walk",
+    "strikeout",
+    "lineout",
+    "popout",
+    "flyout_a",
+    "flyout_bq",
+    "flyout_lf_b",
+    "flyout_rf_b",
+    "groundout_a",
+    "groundout_b",
+    "groundout_c",
+]
+
+# ---------------------------------------------------------------------------
+# Pitcher constants
+# ---------------------------------------------------------------------------
+
+# (column, tb_cost) pairs in priority order.
+PITCHER_PRIORITY: list[tuple[str, int]] = [
+    ("double_cf", 2),
+    ("double_three", 2),
+    ("double_two", 2),
+    ("single_center", 1),
+    ("single_two", 1),
+    ("single_one", 1),
+    ("bp_single", 1),
+    ("walk", 1),
+    ("homerun", 4),
+    ("bp_homerun", 4),
+    ("triple", 3),
+    ("hbp", 1),
+]
+
+# All 18 variable outcome columns (sum to 79; x-checks add 29 for 108 total).
+PITCHER_OUTCOME_COLUMNS: list[str] = [
+    "homerun",
+    "bp_homerun",
+    "triple",
+    "double_three",
+    "double_two",
+    "double_cf",
+    "single_two",
+    "single_one",
+    "single_center",
+    "bp_single",
+    "hbp",
+    "walk",
+    "strikeout",
+    "flyout_lf_b",
+    "flyout_cf_b",
+    "flyout_rf_b",
+    "groundout_a",
+    "groundout_b",
+]
+
+# Cross-check columns that are NEVER modified by the boost algorithm.
+PITCHER_XCHECK_COLUMNS: list[str] = [
+    "xcheck_p",
+    "xcheck_c",
+    "xcheck_1b",
+    "xcheck_2b",
+    "xcheck_3b",
+    "xcheck_ss",
+    "xcheck_lf",
+    "xcheck_cf",
+    "xcheck_rf",
+]
+
+PITCHER_TB_BUDGET = Decimal("1.5")
+
+
+# ---------------------------------------------------------------------------
+# Batter boost
+# ---------------------------------------------------------------------------
+
+
+def apply_batter_boost(ratings_dict: dict) -> dict:
+    """Apply one Refractor tier boost to a batter's outcome ratings.
+
+    Adds fixed positive deltas to four offensive columns (homerun, double_pull,
+    single_one, walk) while funding that increase by reducing strikeout and
+    groundout_a.  A 0-floor is enforced on negative columns: if the full
+    reduction cannot be taken, positive deltas are scaled proportionally so that
+    the invariant (22 columns sum to 108.0) is always preserved.
+
+    Args:
+        ratings_dict: Dict containing at minimum all 22 BATTER_OUTCOME_COLUMNS
+            as numeric (int or float) values.
+
+    Returns:
+        New dict with the same keys as ratings_dict, with boosted outcome column
+        values as floats.  All other keys are passed through unchanged.
+
+    Raises:
+        KeyError: If any BATTER_OUTCOME_COLUMNS key is missing from ratings_dict.
+    """
+    result = dict(ratings_dict)
+
+    # Step 1 — convert the 22 outcome columns to Decimal for precise arithmetic.
+    ratings: dict[str, Decimal] = {
+        col: Decimal(str(result[col])) for col in BATTER_OUTCOME_COLUMNS
+    }
+
+    # Step 2 — apply negative deltas with 0-floor, tracking how much was
+    # actually removed versus how much was requested.
+    total_requested_reduction = Decimal("0")
+    total_actually_reduced = Decimal("0")
+
+    for col, delta in BATTER_NEGATIVE_DELTAS.items():
+        requested = abs(delta)
+        total_requested_reduction += requested
+        actual = min(requested, ratings[col])
+        ratings[col] -= actual
+        total_actually_reduced += actual
+
+    # Step 3 — check whether any truncation occurred.
+    total_truncated = total_requested_reduction - total_actually_reduced
+
+    # Step 4 — scale positive deltas if we couldn't take the full reduction.
+    if total_truncated > Decimal("0"):
+        # Positive additions must equal what was actually reduced so the
+        # 108-sum is preserved.
+        total_requested_addition = sum(BATTER_POSITIVE_DELTAS.values())
+        if total_requested_addition > Decimal("0"):
+            scale = total_actually_reduced / total_requested_addition
+        else:
+            scale = Decimal("0")
+        logger.warning(
+            "refractor_boost: batter truncation occurred — "
+            "requested_reduction=%.4f actually_reduced=%.4f scale=%.6f",
+            float(total_requested_reduction),
+            float(total_actually_reduced),
+            float(scale),
+        )
+        # Quantize the first N-1 deltas independently, then assign the last
+        # delta as the remainder so the total addition equals
+        # total_actually_reduced exactly (no quantize drift across 4 ops).
+        pos_cols = list(BATTER_POSITIVE_DELTAS.keys())
+        positive_deltas = {}
+        running_sum = Decimal("0")
+        for col in pos_cols[:-1]:
+            scaled = (BATTER_POSITIVE_DELTAS[col] * scale).quantize(
+                Decimal("0.000001"), rounding=ROUND_HALF_UP
+            )
+            positive_deltas[col] = scaled
+            running_sum += scaled
+        last_delta = total_actually_reduced - running_sum
+        positive_deltas[pos_cols[-1]] = max(last_delta, Decimal("0"))
+    else:
+        positive_deltas = BATTER_POSITIVE_DELTAS
+
+    # Step 5 — apply (possibly scaled) positive deltas.
+    for col, delta in positive_deltas.items():
+        ratings[col] += delta
+
+    # Write boosted values back as floats.
+    for col in BATTER_OUTCOME_COLUMNS:
+        result[col] = float(ratings[col])
+
+    return result
+
+
+# ---------------------------------------------------------------------------
+# Pitcher boost
+# ---------------------------------------------------------------------------
+
+
+def apply_pitcher_boost(ratings_dict: dict, tb_budget: float = 1.5) -> dict:
+    """Apply one Refractor tier boost to a pitcher's outcome ratings.
+
+    Iterates through PITCHER_PRIORITY in order, converting as many outcome
+    chances as the TB budget allows into strikeouts.  The TB cost per chance
+    varies by outcome type (e.g. a double costs 2 TB budget units, a single
+    costs 1).  The strikeout column absorbs all converted chances.
+
+    X-check columns (xcheck_p through xcheck_rf) are never touched.
+
+    Args:
+        ratings_dict: Dict containing at minimum all 18 PITCHER_OUTCOME_COLUMNS
+            as numeric (int or float) values.
+        tb_budget: Total base budget available for this boost tier.  Defaults
+            to 1.5 (PITCHER_TB_BUDGET).
+
+    Returns:
+        New dict with the same keys as ratings_dict, with boosted outcome column
+        values as floats.  All other keys are passed through unchanged.
+
+    Raises:
+        KeyError: If any PITCHER_OUTCOME_COLUMNS key is missing from ratings_dict.
+    """
+    result = dict(ratings_dict)
+
+    # Step 1 — convert outcome columns to Decimal, set remaining budget.
+    ratings: dict[str, Decimal] = {
+        col: Decimal(str(result[col])) for col in PITCHER_OUTCOME_COLUMNS
+    }
+    remaining = Decimal(str(tb_budget))
+
+    # Step 2 — iterate priority list, draining budget.
+    for col, tb_cost in PITCHER_PRIORITY:
+        if ratings[col] <= Decimal("0"):
+            continue
+
+        tb_cost_d = Decimal(str(tb_cost))
+        max_chances = remaining / tb_cost_d
+        chances_to_take = min(ratings[col], max_chances)
+
+        ratings[col] -= chances_to_take
+        ratings["strikeout"] += chances_to_take
+        remaining -= chances_to_take * tb_cost_d
+
+        if remaining <= Decimal("0"):
+            break
+
+    # Step 3 — warn if budget was not fully spent (rare, indicates all priority
+    # columns were already at zero).
+    if remaining > Decimal("0"):
+        logger.warning(
+            "refractor_boost: pitcher TB budget not fully spent — "
+            "remaining=%.4f of tb_budget=%.4f",
+            float(remaining),
+            tb_budget,
+        )
+
+    # Write boosted values back as floats.
+    for col in PITCHER_OUTCOME_COLUMNS:
+        result[col] = float(ratings[col])
+
+    return result
+
+
+# ---------------------------------------------------------------------------
+# Variant hash
+# ---------------------------------------------------------------------------
+
+
+def compute_variant_hash(
+    player_id: int,
+    refractor_tier: int,
+    cosmetics: list[str] | None = None,
+) -> int:
+    """Compute a stable, deterministic variant identifier for a boosted card.
+
+    Hashes the combination of player_id, refractor_tier, and an optional sorted
+    list of cosmetic identifiers to produce a compact integer suitable for use
+    as a database variant key.  The result is derived from the first 8 hex
+    characters of a SHA-256 digest, so collisions are extremely unlikely in
+    practice.
+
+    variant=0 is reserved and will never be returned; any hash that resolves to
+    0 is remapped to 1.
+
+    Args:
+        player_id: Player primary key.
+        refractor_tier: Refractor tier (0–4) the card has reached.
+        cosmetics: Optional list of cosmetic tag strings (e.g. special art
+            identifiers).  Order is normalised — callers need not sort.
+
+    Returns:
+        A positive integer in the range [1, 2^32 - 1].
+    """
+    inputs = {
+        "player_id": player_id,
+        "refractor_tier": refractor_tier,
+        "cosmetics": sorted(cosmetics or []),
+    }
+    raw = hashlib.sha256(json.dumps(inputs, sort_keys=True).encode()).hexdigest()
+    result = int(raw[:8], 16)
+    return result if result != 0 else 1  # variant=0 is reserved
+
+
+# ---------------------------------------------------------------------------
+# Display stat helpers
+# ---------------------------------------------------------------------------
+
+
+def compute_batter_display_stats(ratings: dict) -> dict:
+    """Compute avg/obp/slg from batter outcome columns.
+
+    Uses the same formulas as the BattingCardRatingsModel Pydantic validator
+    so that variant card display stats are always consistent with the boosted
+    chance values.  All denominators are 108 (the full card chance total).
+
+    Args:
+        ratings: Dict containing at minimum all BATTER_OUTCOME_COLUMNS as
+            numeric (int or float) values.
+
+    Returns:
+        Dict with keys 'avg', 'obp', 'slg' as floats.
+    """
+    avg = (
+        ratings["homerun"]
+        + ratings["bp_homerun"] / 2
+        + ratings["triple"]
+        + ratings["double_three"]
+        + ratings["double_two"]
+        + ratings["double_pull"]
+        + ratings["single_two"]
+        + ratings["single_one"]
+        + ratings["single_center"]
+        + ratings["bp_single"] / 2
+    ) / 108
+    obp = (ratings["hbp"] + ratings["walk"]) / 108 + avg
+    slg = (
+        ratings["homerun"] * 4
+        + ratings["bp_homerun"] * 2
+        + ratings["triple"] * 3
+        + ratings["double_three"] * 2
+        + ratings["double_two"] * 2
+        + ratings["double_pull"] * 2
+        + ratings["single_two"]
+        + ratings["single_one"]
+        + ratings["single_center"]
+        + ratings["bp_single"] / 2
+    ) / 108
+    return {"avg": avg, "obp": obp, "slg": slg}
+
+
+def compute_pitcher_display_stats(ratings: dict) -> dict:
+    """Compute avg/obp/slg from pitcher outcome columns.
+
+    Uses the same formulas as the PitchingCardRatingsModel Pydantic validator
+    so that variant card display stats are always consistent with the boosted
+    chance values.  All denominators are 108 (the full card chance total).
+
+    Args:
+        ratings: Dict containing at minimum all PITCHER_OUTCOME_COLUMNS as
+            numeric (int or float) values.
+
+    Returns:
+        Dict with keys 'avg', 'obp', 'slg' as floats.
+    """
+    avg = (
+        ratings["homerun"]
+        + ratings["bp_homerun"] / 2
+        + ratings["triple"]
+        + ratings["double_three"]
+        + ratings["double_two"]
+        + ratings["double_cf"]
+        + ratings["single_two"]
+        + ratings["single_one"]
+        + ratings["single_center"]
+        + ratings["bp_single"] / 2
+    ) / 108
+    obp = (ratings["hbp"] + ratings["walk"]) / 108 + avg
+    slg = (
+        ratings["homerun"] * 4
+        + ratings["bp_homerun"] * 2
+        + ratings["triple"] * 3
+        + ratings["double_three"] * 2
+        + ratings["double_two"] * 2
+        + ratings["double_cf"] * 2
+        + ratings["single_two"]
+        + ratings["single_one"]
+        + ratings["single_center"]
+        + ratings["bp_single"] / 2
+    ) / 108
+    return {"avg": avg, "obp": obp, "slg": slg}
+
+
+# ---------------------------------------------------------------------------
+# Orchestration: apply_tier_boost
+# ---------------------------------------------------------------------------
+
+
+def apply_tier_boost(
+    player_id: int,
+    team_id: int,
+    new_tier: int,
+    card_type: str,
+    _batting_card_model=None,
+    _batting_ratings_model=None,
+    _pitching_card_model=None,
+    _pitching_ratings_model=None,
+    _card_model=None,
+    _state_model=None,
+    _audit_model=None,
+) -> dict:
+    """Create a boosted variant card for a tier-up.
+
+    IMPORTANT: This function is the SOLE writer of current_tier on
+    RefractorCardState when a tier-up occurs.  The evaluator computes
+    the new tier but does NOT write it — this function writes tier +
+    variant + audit atomically inside a single db.atomic() block.
+    If this function fails, the tier stays at its old value and will
+    be retried on the next game evaluation.
+
+    Orchestrates the full flow (card creation outside atomic; state
+    mutations inside db.atomic()):
+    1. Determine source variant (variant=0 for T1, previous tier's hash for T2+)
+    2. Fetch source card and ratings rows
+    3. Apply boost formula (batter or pitcher) per vs_hand split
+    4. Assert 108-sum after boost for both batters and pitchers
+    5. Compute new variant hash
+    6. Create new card row with new variant (idempotency: skip if exists)
+    7. Create new ratings rows for both vs_hand splits (idempotency: skip if exists)
+    8. Inside db.atomic():
+       a. Write RefractorBoostAudit record
+       b. Update RefractorCardState: current_tier, variant, fully_evolved
+       c. Propagate variant to all Card rows for (player_id, team_id)
+
+    Args:
+        player_id: Player primary key.
+        team_id: Team primary key.
+        new_tier: The tier being reached (1-4).
+        card_type: One of 'batter', 'sp', 'rp'.
+        _batting_card_model: Injectable stub for BattingCard (used in tests).
+        _batting_ratings_model: Injectable stub for BattingCardRatings.
+        _pitching_card_model: Injectable stub for PitchingCard.
+        _pitching_ratings_model: Injectable stub for PitchingCardRatings.
+        _card_model: Injectable stub for Card.
+        _state_model: Injectable stub for RefractorCardState.
+        _audit_model: Injectable stub for RefractorBoostAudit.
+
+    Returns:
+        Dict with 'variant_created' (int) and 'boost_deltas' (per-split dict).
+
+    Raises:
+        ValueError: If the source card or ratings are missing, or if
+            RefractorCardState is not found for (player_id, team_id).
+    """
+    # Lazy model imports — same pattern as refractor_evaluator.py.
+    if _batting_card_model is None:
+        from app.db_engine import BattingCard as _batting_card_model  # noqa: PLC0415
+    if _batting_ratings_model is None:
+        from app.db_engine import BattingCardRatings as _batting_ratings_model  # noqa: PLC0415
+    if _pitching_card_model is None:
+        from app.db_engine import PitchingCard as _pitching_card_model  # noqa: PLC0415
+    if _pitching_ratings_model is None:
+        from app.db_engine import PitchingCardRatings as _pitching_ratings_model  # noqa: PLC0415
+    if _card_model is None:
+        from app.db_engine import Card as _card_model  # noqa: PLC0415
+    if _state_model is None:
+        from app.db_engine import RefractorCardState as _state_model  # noqa: PLC0415
+    if _audit_model is None:
+        from app.db_engine import RefractorBoostAudit as _audit_model  # noqa: PLC0415
+
+    _db = _get_db()
+
+    if card_type not in ("batter", "sp", "rp"):
+        raise ValueError(
+            f"Invalid card_type={card_type!r}; expected one of 'batter', 'sp', 'rp'"
+        )
+    is_batter = card_type == "batter"
+    CardModel = _batting_card_model if is_batter else _pitching_card_model
+    RatingsModel = _batting_ratings_model if is_batter else _pitching_ratings_model
+    fk_field = "battingcard" if is_batter else "pitchingcard"
+
+    # 1. Determine source variant.
+    if new_tier == 1:
+        source_variant = 0
+    else:
+        source_variant = compute_variant_hash(player_id, new_tier - 1)
+
+    # 2. Fetch source card and ratings rows.
+    source_card = CardModel.get_or_none(
+        (CardModel.player == player_id) & (CardModel.variant == source_variant)
+    )
+    if source_card is None:
+        raise ValueError(
+            f"No {'batting' if is_batter else 'pitching'}card for "
+            f"player={player_id} variant={source_variant}"
+        )
+
+    ratings_rows = list(
+        RatingsModel.select().where(getattr(RatingsModel, fk_field) == source_card.id)
+    )
+    if not ratings_rows:
+        raise ValueError(f"No ratings rows for card_id={source_card.id}")
+
+    # 3. Apply boost to each vs_hand split.
+    boost_fn = apply_batter_boost if is_batter else apply_pitcher_boost
+    outcome_cols = BATTER_OUTCOME_COLUMNS if is_batter else PITCHER_OUTCOME_COLUMNS
+    boosted_splits: dict[str, dict] = {}
+
+    for row in ratings_rows:
+        # Build the ratings dict: outcome columns + (pitcher) x-check columns.
+        ratings_dict: dict = {col: getattr(row, col) for col in outcome_cols}
+        if not is_batter:
+            for col in PITCHER_XCHECK_COLUMNS:
+                ratings_dict[col] = getattr(row, col)
+
+        boosted = boost_fn(ratings_dict)
+
+        # 4. Assert 108-sum invariant after boost (Peewee bypasses Pydantic validators).
+        if is_batter:
+            boosted_sum = sum(boosted[col] for col in BATTER_OUTCOME_COLUMNS)
+        else:
+            boosted_sum = sum(boosted[col] for col in PITCHER_OUTCOME_COLUMNS) + sum(
+                boosted[col] for col in PITCHER_XCHECK_COLUMNS
+            )
+
+        if abs(boosted_sum - 108.0) >= 0.01:
+            raise ValueError(
+                f"108-sum invariant violated after boost for player={player_id} "
+                f"vs_hand={row.vs_hand}: sum={boosted_sum:.6f}"
+            )
+
+        boosted_splits[row.vs_hand] = boosted
+
+    # 5. Compute new variant hash.
+    new_variant = compute_variant_hash(player_id, new_tier)
+
+    # 6. Create new card row (idempotency: skip if exists).
+    existing_card = CardModel.get_or_none(
+        (CardModel.player == player_id) & (CardModel.variant == new_variant)
+    )
+    if existing_card is not None:
+        new_card = existing_card
+    else:
+        if is_batter:
+            clone_fields = [
+                "steal_low",
+                "steal_high",
+                "steal_auto",
+                "steal_jump",
+                "bunting",
+                "hit_and_run",
+                "running",
+                "offense_col",
+                "hand",
+            ]
+        else:
+            clone_fields = [
+                "balk",
+                "wild_pitch",
+                "hold",
+                "starter_rating",
+                "relief_rating",
+                "closer_rating",
+                "batting",
+                "offense_col",
+                "hand",
+            ]
+        card_data: dict = {
+            "player": player_id,
+            "variant": new_variant,
+            "image_url": None,  # No rendered image for variant cards yet.
+        }
+        for fname in clone_fields:
+            card_data[fname] = getattr(source_card, fname)
+        new_card = CardModel.create(**card_data)
+
+    # 7. Create new ratings rows for each split (idempotency: skip if exists).
+    display_stats_fn = (
+        compute_batter_display_stats if is_batter else compute_pitcher_display_stats
+    )
+
+    for vs_hand, boosted_ratings in boosted_splits.items():
+        existing_ratings = RatingsModel.get_or_none(
+            (getattr(RatingsModel, fk_field) == new_card.id)
+            & (RatingsModel.vs_hand == vs_hand)
+        )
+        if existing_ratings is not None:
+            continue  # Idempotency: already written.
+
+        ratings_data: dict = {
+            fk_field: new_card.id,
+            "vs_hand": vs_hand,
+        }
+        # Outcome columns (boosted values).
+        ratings_data.update({col: boosted_ratings[col] for col in outcome_cols})
+
+        # X-check columns for pitchers (unchanged by boost, copy from boosted dict).
+        if not is_batter:
+            for col in PITCHER_XCHECK_COLUMNS:
+                ratings_data[col] = boosted_ratings[col]
+
+        # Direction rates for batters: copy from source row.
+        if is_batter:
+            source_row = next(r for r in ratings_rows if r.vs_hand == vs_hand)
+            for rate_col in ("pull_rate", "center_rate", "slap_rate"):
+                ratings_data[rate_col] = getattr(source_row, rate_col)
+
+        # Compute fresh display stats from boosted chance columns.
+        display_stats = display_stats_fn(boosted_ratings)
+        ratings_data.update(display_stats)
+
+        RatingsModel.create(**ratings_data)
+
+    # 8. Load card state — needed for atomic state mutations.
+    card_state = _state_model.get_or_none(
+        (_state_model.player == player_id) & (_state_model.team == team_id)
+    )
+    if card_state is None:
+        raise ValueError(
+            f"No refractor_card_state for player={player_id} team={team_id}"
+        )
+
+    # All state mutations in a single atomic block.
+    with _db.atomic():
+        # 8a. Write audit record.
+        # boost_delta_json stores per-split boosted values including x-check columns
+        # for pitchers so the full card can be reconstructed from the audit.
+        audit_data: dict = {
+            "card_state": card_state.id,
+            "tier": new_tier,
+            "variant_created": new_variant,
+            "boost_delta_json": json.dumps(boosted_splits, default=str),
+        }
+        if is_batter:
+            audit_data["battingcard"] = new_card.id
+        else:
+            audit_data["pitchingcard"] = new_card.id
+        existing_audit = _audit_model.get_or_none(
+            (_audit_model.card_state == card_state.id) & (_audit_model.tier == new_tier)
+        )
+        if existing_audit is None:
+            _audit_model.create(**audit_data)
+
+        # 8b. Update RefractorCardState — this is the SOLE tier write on tier-up.
+        card_state.current_tier = new_tier
+        card_state.fully_evolved = new_tier >= 4
+        card_state.variant = new_variant
+        card_state.save()
+
+        # 8c. Propagate variant to all Card rows for (player_id, team_id).
+        _card_model.update(variant=new_variant).where(
+            (_card_model.player == player_id) & (_card_model.team == team_id)
+        ).execute()
+
+    logger.debug(
+        "refractor_boost: applied T%s boost for player=%s team=%s variant=%s",
+        new_tier,
+        player_id,
+        team_id,
+        new_variant,
+    )
+
+    return {
+        "variant_created": new_variant,
+        "boost_deltas": dict(boosted_splits),
+    }

app/services/refractor_evaluator.py

@@ -9,9 +9,20 @@ evaluate_card() is the main entry point:
   4. Compare value to track thresholds to determine new_tier
   5. Update card_state.current_value = computed value
   6. Update card_state.current_tier = max(current_tier, new_tier) — no regression
-  7. Update card_state.fully_evolved = (new_tier >= 4)
+     (SKIPPED when dry_run=True)
+  7. Update card_state.fully_evolved = (current_tier >= 4)
+     (SKIPPED when dry_run=True)
   8. Update card_state.last_evaluated_at = NOW()
 
+When dry_run=True, only steps 5 and 8 are written (current_value and
+last_evaluated_at).  Steps 6–7 (current_tier and fully_evolved) are intentionally
+skipped so that the evaluate-game endpoint can detect a pending tier-up and
+delegate the tier write to apply_tier_boost(), which writes tier + variant
+atomically.  The return dict always includes both "computed_tier" (what the
+formula says the tier should be) and "computed_fully_evolved" (whether the
+computed tier implies full evolution) so callers can make decisions without
+reading the database again.
+
 Idempotent: calling multiple times with the same data produces the same result.
 
 Depends on WP-05 (RefractorCardState), WP-07 (BattingSeasonStats/PitchingSeasonStats),
@@ -47,6 +58,7 @@ class _CareerTotals:
 def evaluate_card(
     player_id: int,
     team_id: int,
+    dry_run: bool = False,
     _stats_model=None,
     _state_model=None,
     _compute_value_fn=None,
@@ -56,15 +68,26 @@ def evaluate_card(
 
     Sums all BattingSeasonStats or PitchingSeasonStats rows (based on
     card_type) for (player_id, team_id) across all seasons, then delegates
-    formula computation and tier classification to the formula engine.  The result is written back to refractor_card_state and
-    returned as a dict.
+    formula computation and tier classification to the formula engine.  The
+    result is written back to refractor_card_state and returned as a dict.
 
     current_tier never decreases (no regression):
         card_state.current_tier = max(card_state.current_tier, new_tier)
 
+    When dry_run=True, only current_value and last_evaluated_at are written —
+    current_tier and fully_evolved are NOT updated.  This allows the caller
+    (evaluate-game endpoint) to detect a tier-up and delegate the tier write
+    to apply_tier_boost(), which writes tier + variant atomically.  The return
+    dict always includes "computed_tier" (what the formula says the tier should
+    be) in addition to "current_tier" (what is actually stored in the DB).
+
     Args:
         player_id: Player primary key.
         team_id: Team primary key.
+        dry_run: When True, skip writing current_tier and fully_evolved so
+            that apply_tier_boost() can write them atomically with variant
+            creation.  Defaults to False (existing behaviour for the manual
+            /evaluate endpoint).
         _stats_model: Override for BattingSeasonStats/PitchingSeasonStats
             (used in tests to inject a stub model with all stat fields).
         _state_model: Override for RefractorCardState (used in tests to avoid
@@ -75,8 +98,10 @@ def evaluate_card(
             (used in tests).
 
     Returns:
-        Dict with updated current_tier, current_value, fully_evolved,
-        last_evaluated_at (ISO-8601 string).
+        Dict with current_tier, computed_tier, current_value, fully_evolved,
+        last_evaluated_at (ISO-8601 string).  "computed_tier" reflects what
+        the formula computed; "current_tier" reflects what is stored in the DB
+        (which may differ when dry_run=True and a tier-up is pending).
 
     Raises:
         ValueError: If no refractor_card_state row exists for (player_id, team_id).
@@ -169,21 +194,30 @@ def evaluate_card(
     value = _compute_value_fn(track.card_type, totals)
     new_tier = _tier_from_value_fn(value, track)
 
-    # 5–8. Update card state (no tier regression)
+    # 5–8. Update card state.
     now = datetime.now()
+    computed_tier = new_tier
+    computed_fully_evolved = computed_tier >= 4
+
+    # Always update value and timestamp; current_tier and fully_evolved are
+    # skipped when dry_run=True so that apply_tier_boost() can write them
+    # atomically with variant creation on tier-up.
     card_state.current_value = value
-    card_state.current_tier = max(card_state.current_tier, new_tier)
-    card_state.fully_evolved = card_state.current_tier >= 4
     card_state.last_evaluated_at = now
+    if not dry_run:
+        card_state.current_tier = max(card_state.current_tier, new_tier)
+        card_state.fully_evolved = card_state.current_tier >= 4
     card_state.save()
 
     logging.debug(
-        "refractor_eval: player=%s team=%s value=%.2f tier=%s fully_evolved=%s",
+        "refractor_eval: player=%s team=%s value=%.2f computed_tier=%s "
+        "stored_tier=%s dry_run=%s",
         player_id,
         team_id,
         value,
+        computed_tier,
         card_state.current_tier,
-        card_state.fully_evolved,
+        dry_run,
     )
 
     return {
@@ -191,6 +225,8 @@ def evaluate_card(
         "team_id": team_id,
         "current_value": card_state.current_value,
         "current_tier": card_state.current_tier,
+        "computed_tier": computed_tier,
+        "computed_fully_evolved": computed_fully_evolved,
         "fully_evolved": card_state.fully_evolved,
         "last_evaluated_at": card_state.last_evaluated_at.isoformat(),
     }

migrations/2026-03-25_add_refractor_card_state_team_index.sql

@@ -0,0 +1,19 @@
+-- Migration: Add team_id index to refractor_card_state
+-- Date: 2026-03-25
+--
+-- Adds a non-unique index on refractor_card_state.team_id to support the new
+-- GET /api/v2/refractor/cards list endpoint, which filters by team as its
+-- primary discriminator and is called on every /refractor status bot command.
+--
+-- The existing unique index is on (player_id, team_id) with player leading,
+-- so team-only queries cannot use it efficiently.
+
+BEGIN;
+
+CREATE INDEX IF NOT EXISTS idx_refractor_card_state_team
+    ON refractor_card_state (team_id);
+
+COMMIT;
+
+-- Rollback:
+-- DROP INDEX IF EXISTS idx_refractor_card_state_team;

migrations/2026-03-28_refractor_phase2_boost.sql

@@ -0,0 +1,47 @@
+-- Migration: Refractor Phase 2 — rating boost support
+-- Date: 2026-03-28
+-- Purpose: Extends the Refractor system to track and audit rating boosts
+--          applied at each tier-up. Adds a variant column to
+--          refractor_card_state (mirrors card.variant for promoted copies)
+--          and creates the refractor_boost_audit table to record the
+--          boost delta, source card, and variant assigned at each tier.
+--
+-- Tables affected:
+--   refractor_card_state  — new column: variant INTEGER
+--   refractor_boost_audit — new table
+--
+-- Run on dev first, verify with:
+--   SELECT column_name FROM information_schema.columns
+--     WHERE table_name = 'refractor_card_state'
+--       AND column_name = 'variant';
+--   SELECT count(*) FROM refractor_boost_audit;
+--
+-- Rollback: See DROP/ALTER statements at bottom of file
+
+BEGIN;
+
+-- Verify card.variant column exists (should be from Phase 1 migration).
+-- If not present, uncomment:
+-- ALTER TABLE card ADD COLUMN IF NOT EXISTS variant INTEGER DEFAULT NULL;
+
+-- New columns on refractor_card_state (additive, no data migration needed)
+ALTER TABLE refractor_card_state ADD COLUMN IF NOT EXISTS variant INTEGER;
+
+-- Boost audit table: records what was applied at each tier-up
+CREATE TABLE IF NOT EXISTS refractor_boost_audit (
+    id SERIAL PRIMARY KEY,
+    card_state_id INTEGER NOT NULL REFERENCES refractor_card_state(id) ON DELETE CASCADE,
+    tier SMALLINT NOT NULL,
+    battingcard_id INTEGER REFERENCES battingcard(id),
+    pitchingcard_id INTEGER REFERENCES pitchingcard(id),
+    variant_created INTEGER NOT NULL,
+    boost_delta_json JSONB NOT NULL,
+    applied_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    UNIQUE(card_state_id, tier)  -- Prevent duplicate audit records on retry
+);
+
+COMMIT;
+
+-- Rollback:
+-- DROP TABLE IF EXISTS refractor_boost_audit;
+-- ALTER TABLE refractor_card_state DROP COLUMN IF EXISTS variant;

run-local.sh

@@ -0,0 +1,132 @@
+#!/usr/bin/env bash
+# run-local.sh — Spin up the Paper Dynasty Database API locally for testing.
+#
+# Connects to the dev PostgreSQL on the homelab (10.10.0.42) so you get real
+# card data for rendering. Playwright Chromium must be installed locally
+# (it already is on this workstation).
+#
+# Usage:
+#   ./run-local.sh              # start on default port 8000
+#   ./run-local.sh 8001         # start on custom port
+#   ./run-local.sh --stop       # kill a running instance
+#
+# Card rendering test URLs (after startup):
+#   HTML preview:  http://localhost:8000/api/v2/players/{id}/battingcard/{date}/{variant}?html=True
+#   PNG render:    http://localhost:8000/api/v2/players/{id}/battingcard/{date}/{variant}
+#   API docs:      http://localhost:8000/api/docs
+
+set -euo pipefail
+cd "$(dirname "$0")"
+
+PORT="${1:-8000}"
+PIDFILE=".run-local.pid"
+LOGFILE="logs/database/run-local.log"
+
+# ── Stop mode ────────────────────────────────────────────────────────────────
+if [[ "${1:-}" == "--stop" ]]; then
+  if [[ -f "$PIDFILE" ]]; then
+    pid=$(cat "$PIDFILE")
+    if kill -0 "$pid" 2>/dev/null; then
+      kill "$pid"
+      echo "Stopped local API (PID $pid)"
+    else
+      echo "PID $pid not running (stale pidfile)"
+    fi
+    rm -f "$PIDFILE"
+  else
+    echo "No pidfile found — nothing to stop"
+  fi
+  exit 0
+fi
+
+# ── Pre-flight checks ───────────────────────────────────────────────────────
+if [[ -f "$PIDFILE" ]] && kill -0 "$(cat "$PIDFILE")" 2>/dev/null; then
+  echo "Already running (PID $(cat "$PIDFILE")). Use './run-local.sh --stop' first."
+  exit 1
+fi
+
+# Check Python deps are importable
+python -c "import fastapi, peewee, playwright" 2>/dev/null || {
+  echo "Missing Python dependencies. Install with: pip install -r requirements.txt"
+  exit 1
+}
+
+# Check Playwright Chromium is available
+python -c "
+from playwright.sync_api import sync_playwright
+p = sync_playwright().start()
+print(p.chromium.executable_path)
+p.stop()
+" >/dev/null 2>&1 || {
+  echo "Playwright Chromium not installed. Run: playwright install chromium"
+  exit 1
+}
+
+# Check dev DB is reachable
+DB_HOST="${POSTGRES_HOST_LOCAL:-10.10.0.42}"
+python -c "
+import socket, sys
+s = socket.create_connection((sys.argv[1], 5432), timeout=3)
+s.close()
+" "$DB_HOST" 2>/dev/null || {
+  echo "Cannot reach dev PostgreSQL at ${DB_HOST}:5432 — is the homelab up?"
+  exit 1
+}
+
+# ── Ensure directories exist ────────────────────────────────────────────────
+mkdir -p logs/database
+mkdir -p storage/cards
+
+# ── Launch ───────────────────────────────────────────────────────────────────
+echo "Starting Paper Dynasty Database API on http://localhost:${PORT}"
+echo "  DB: paperdynasty_dev @ 10.10.0.42"
+echo "  Logs: ${LOGFILE}"
+echo ""
+
+# Load .env, then .env.local overrides (for passwords not in version control)
+set -a
+# shellcheck source=/dev/null
+[[ -f .env ]] && source .env
+[[ -f .env.local ]] && source .env.local
+set +a
+
+# Override DB host to point at the dev server's IP (not Docker network name)
+export DATABASE_TYPE=postgresql
+export POSTGRES_HOST="$DB_HOST"
+export POSTGRES_PORT="${POSTGRES_PORT:-5432}"
+export POSTGRES_DB="${POSTGRES_DB:-paperdynasty_dev}"
+export POSTGRES_USER="${POSTGRES_USER:-sba_admin}"
+export LOG_LEVEL=INFO
+export TESTING=True
+
+if [[ -z "${POSTGRES_PASSWORD:-}" || "$POSTGRES_PASSWORD" == "your_production_password" ]]; then
+  echo "ERROR: POSTGRES_PASSWORD not set or is the placeholder value."
+  echo "Create .env.local with: POSTGRES_PASSWORD=<actual password>"
+  exit 1
+fi
+
+uvicorn app.main:app \
+  --host 0.0.0.0 \
+  --port "$PORT" \
+  --reload \
+  --reload-dir app \
+  --reload-dir storage/templates \
+  2>&1 | tee "$LOGFILE" &
+
+echo $! >"$PIDFILE"
+sleep 2
+
+if kill -0 "$(cat "$PIDFILE")" 2>/dev/null; then
+  echo ""
+  echo "API running (PID $(cat "$PIDFILE"))."
+  echo ""
+  echo "Quick test URLs:"
+  echo "  API docs:    http://localhost:${PORT}/api/docs"
+  echo "  Health:      curl -s http://localhost:${PORT}/api/v2/players/1/battingcard?html=True"
+  echo ""
+  echo "Stop with: ./run-local.sh --stop"
+else
+  echo "Failed to start — check ${LOGFILE}"
+  rm -f "$PIDFILE"
+  exit 1
+fi

storage/templates/player_card.html

@@ -2,9 +2,26 @@
 <html lang="en">
 <head>
     {% include 'style.html' %}
+    {% include 'tier_style.html' %}
 </head>
 <body>
     <div id="fullCard" style="width: 1200px; height: 600px;">
+        {% if refractor_tier is defined and refractor_tier > 0 %}
+        {%- set diamond_colors = {
+            1: {'color': '#1a6b1a', 'highlight': '#40b040'},
+            2: {'color': '#2070b0', 'highlight': '#50a0e8'},
+            3: {'color': '#a82020', 'highlight': '#e85050'},
+            4: {'color': '#6b2d8e', 'highlight': '#a060d0'},
+        } -%}
+        {%- set dc = diamond_colors[refractor_tier] -%}
+        {%- set filled_bg = 'linear-gradient(135deg, ' ~ dc.highlight ~ ' 0%, ' ~ dc.color ~ ' 50%, ' ~ dc.color ~ ' 100%)' -%}
+        <div class="tier-diamond{% if refractor_tier == 4 %} diamond-glow{% endif %}">
+            <div class="diamond-quad{% if refractor_tier >= 2 %} filled{% endif %}" {% if refractor_tier >= 2 %}style="background: {{ filled_bg }};"{% endif %}></div>
+            <div class="diamond-quad{% if refractor_tier >= 1 %} filled{% endif %}" {% if refractor_tier >= 1 %}style="background: {{ filled_bg }};"{% endif %}></div>
+            <div class="diamond-quad{% if refractor_tier >= 3 %} filled{% endif %}" {% if refractor_tier >= 3 %}style="background: {{ filled_bg }};"{% endif %}></div>
+            <div class="diamond-quad{% if refractor_tier >= 4 %} filled{% endif %}" {% if refractor_tier >= 4 %}style="background: {{ filled_bg }};"{% endif %}></div>
+        </div>
+        {% endif %}
         <div id="header" class="row-wrapper header-text border-bot" style="height: 65px">
 <!--            <div id="headerLeft" style="flex-grow: 3; height: auto">-->
             <div id="headerLeft" style="width: 477px; height: auto">

storage/templates/tier_style.html

@@ -0,0 +1,216 @@
+<style>
+    #fullCard {
+        position: relative;
+        overflow: hidden;
+    }
+</style>
+{% if refractor_tier is defined and refractor_tier > 0 %}
+<style>
+    .tier-diamond {
+        position: absolute;
+        left: 597px;
+        top: 78.5px;
+        transform: translate(-50%, -50%) rotate(45deg);
+        display: grid;
+        grid-template: 1fr 1fr / 1fr 1fr;
+        gap: 2px;
+        z-index: 20;
+        pointer-events: none;
+        background: rgba(0,0,0,0.75);
+        border-radius: 2px;
+        box-shadow: 0 0 0 1.5px rgba(0,0,0,0.7), 0 2px 5px rgba(0,0,0,0.5);
+    }
+
+    .diamond-quad {
+        width: 19px;
+        height: 19px;
+        background: rgba(0,0,0,0.3);
+    }
+
+    .diamond-quad.filled {
+        box-shadow: inset 0 1px 2px rgba(255,255,255,0.45),
+                    inset 0 -1px 2px rgba(0,0,0,0.35),
+                    inset 1px 0 2px rgba(255,255,255,0.15);
+    }
+
+
+{% if refractor_tier == 1 %}
+    /* T1 — Base Chrome */
+    #header {
+        background: linear-gradient(135deg, rgba(185,195,210,0.25) 0%, rgba(210,218,228,0.35) 50%, rgba(185,195,210,0.25) 100%), #ffffff;
+    }
+    .border-bot {
+        border-bottom-color: #8e9baf;
+        border-bottom-width: 4px;
+    }
+    #resultHeader.border-bot {
+        border-bottom-width: 3px;
+    }
+    .border-right-thick {
+        border-right-color: #8e9baf;
+    }
+    .border-right-thin {
+        border-right-color: #8e9baf;
+    }
+    .vline {
+        border-left-color: #8e9baf;
+    }
+
+{% elif refractor_tier == 2 %}
+    /* T2 — Refractor */
+    #header {
+        background: linear-gradient(135deg, rgba(100,155,230,0.28) 0%, rgba(155,90,220,0.18) 25%, rgba(90,200,210,0.24) 50%, rgba(185,80,170,0.16) 75%, rgba(100,155,230,0.28) 100%), #ffffff;
+    }
+    #fullCard {
+        box-shadow: inset 0 0 14px 3px rgba(90,143,207,0.22);
+    }
+    .border-bot {
+        border-bottom-color: #7a9cc4;
+        border-bottom-width: 4px;
+    }
+    #resultHeader .border-right-thick {
+        border-right-width: 6px;
+    }
+    .border-right-thick {
+        border-right-color: #7a9cc4;
+    }
+    .border-right-thin {
+        border-right-color: #7a9cc4;
+        border-right-width: 3px;
+    }
+    .vline {
+        border-left-color: #7a9cc4;
+    }
+    .blue-gradient {
+        background-image: linear-gradient(to right, rgba(60,110,200,1), rgba(100,55,185,0.55), rgba(60,110,200,1));
+    }
+    .red-gradient {
+        background-image: linear-gradient(to right, rgba(190,35,80,1), rgba(165,25,100,0.55), rgba(190,35,80,1));
+    }
+
+{% elif refractor_tier == 3 %}
+    /* T3 — Gold Refractor */
+    #header {
+        background: linear-gradient(135deg, rgba(195,155,35,0.26) 0%, rgba(235,200,70,0.2) 50%, rgba(195,155,35,0.26) 100%), #ffffff;
+        overflow: hidden;
+        position: relative;
+    }
+    #fullCard {
+        box-shadow: inset 0 0 16px 4px rgba(200,165,48,0.22);
+    }
+    .border-bot {
+        border-bottom-color: #c9a94e;
+        border-bottom-width: 4px;
+    }
+    .border-right-thick {
+        border-right-color: #c9a94e;
+    }
+    .border-right-thin {
+        border-right-color: #c9a94e;
+        border-right-width: 3px;
+    }
+    .vline {
+        border-left-color: #c9a94e;
+    }
+    .blue-gradient {
+        background-image: linear-gradient(to right, rgba(195,160,40,1), rgba(220,185,60,0.55), rgba(195,160,40,1));
+    }
+    .red-gradient {
+        background-image: linear-gradient(to right, rgba(195,160,40,1), rgba(220,185,60,0.55), rgba(195,160,40,1));
+    }
+
+    /* T3 shimmer animation — paused for static PNG capture */
+    @keyframes t3-shimmer {
+        0%   { transform: translateX(-130%); }
+        100% { transform: translateX(230%); }
+    }
+    #header::after {
+        content: '';
+        position: absolute;
+        top: 0; left: 0; right: 0; bottom: 0;
+        background: linear-gradient(
+            105deg,
+            transparent             38%,
+            rgba(255,240,140,0.18)  44%,
+            rgba(255,220,80,0.38)   50%,
+            rgba(255,200,60,0.30)   53%,
+            rgba(255,240,140,0.14)  58%,
+            transparent             64%
+        );
+        pointer-events: none;
+        z-index: 5;
+        animation: t3-shimmer 2.5s ease-in-out infinite;
+        animation-play-state: paused;
+    }
+
+{% elif refractor_tier == 4 %}
+    /* T4 — Superfractor */
+    #header {
+        background: #ffffff;
+        overflow: hidden;
+        position: relative;
+    }
+    #fullCard {
+        box-shadow: inset 0 0 22px 6px rgba(45,212,191,0.28), inset 0 0 39px 9px rgba(200,165,48,0.15);
+    }
+    .border-bot {
+        border-bottom-color: #c9a94e;
+        border-bottom-width: 4px;
+    }
+    .border-right-thick {
+        border-right-color: #c9a94e;
+    }
+    .border-right-thin {
+        border-right-color: #c9a94e;
+    }
+    .vline {
+        border-left-color: #c9a94e;
+    }
+    .blue-gradient {
+        background-image: linear-gradient(to right, rgba(195,160,40,1), rgba(220,185,60,0.55), rgba(195,160,40,1));
+    }
+    .red-gradient {
+        background-image: linear-gradient(to right, rgba(195,160,40,1), rgba(220,185,60,0.55), rgba(195,160,40,1));
+    }
+
+    /* T4 prismatic header sweep — paused for static PNG capture */
+    @keyframes t4-prismatic-sweep {
+        0%   { transform: translateX(0%); }
+        100% { transform: translateX(-50%); }
+    }
+    #header::after {
+        content: '';
+        position: absolute;
+        top: 0; left: 0;
+        width: 200%; height: 100%;
+        background: linear-gradient(135deg,
+            transparent 2%, rgba(255,100,100,0.28) 8%, rgba(255,200,50,0.32) 14%,
+            rgba(100,255,150,0.30) 20%, rgba(50,190,255,0.32) 26%, rgba(140,80,255,0.28) 32%,
+            rgba(255,100,180,0.24) 38%, transparent 44%,
+            transparent 52%, rgba(255,100,100,0.28) 58%, rgba(255,200,50,0.32) 64%,
+            rgba(100,255,150,0.30) 70%, rgba(50,190,255,0.32) 76%, rgba(140,80,255,0.28) 82%,
+            rgba(255,100,180,0.24) 88%, transparent 94%
+        );
+        z-index: 1;
+        pointer-events: none;
+        animation: t4-prismatic-sweep 6s linear infinite;
+        animation-play-state: paused;
+    }
+    #header > * { z-index: 2; }
+
+    /* T4 diamond glow pulse — paused for static PNG */
+    @keyframes diamond-glow-pulse {
+        0%, 100% { box-shadow: 0 0 0 1.5px rgba(0,0,0,0.7), 0 2px 5px rgba(0,0,0,0.5),
+                               0 0 8px 2px rgba(107,45,142,0.6); }
+        50%      { box-shadow: 0 0 0 1.5px rgba(0,0,0,0.5), 0 2px 4px rgba(0,0,0,0.3),
+                               0 0 14px 5px rgba(107,45,142,0.8),
+                               0 0 24px 8px rgba(107,45,142,0.3); }
+    }
+    .tier-diamond.diamond-glow {
+        animation: diamond-glow-pulse 2s ease-in-out infinite;
+        animation-play-state: paused;
+    }
+
+{% endif %}
+</style>
+{% endif %}

tests/conftest.py

@@ -44,10 +44,13 @@ from app.db_engine import (
     BattingSeasonStats,
     PitchingSeasonStats,
     ProcessedGame,
+    BattingCard,
+    PitchingCard,
     RefractorTrack,
     RefractorCardState,
     RefractorTierBoost,
     RefractorCosmetic,
+    RefractorBoostAudit,
     ScoutOpportunity,
     ScoutClaim,
 )
@@ -80,6 +83,9 @@ _TEST_MODELS = [
     RefractorCardState,
     RefractorTierBoost,
     RefractorCosmetic,
+    BattingCard,
+    PitchingCard,
+    RefractorBoostAudit,
 ]
 
 

tests/test_formula_engine.py

@@ -204,3 +204,120 @@ def test_tier_t3_boundary():
 def test_tier_accepts_namespace_track():
     """tier_from_value must work with attribute-style track objects (Peewee models)."""
     assert tier_from_value(37, track_ns("batter")) == 1
+
+
+# ---------------------------------------------------------------------------
+# T1-1: Negative singles guard in compute_batter_value
+# ---------------------------------------------------------------------------
+
+
+def test_batter_negative_singles_component():
+    """hits=1, doubles=1, triples=1, hr=0 produces singles=-1.
+
+    What: The formula computes singles = hits - doubles - triples - hr.
+    With hits=1, doubles=1, triples=1, hr=0 the result is singles = -1,
+    which is a physically impossible stat line but valid arithmetic input.
+
+    Why: Document the formula's actual behaviour when given an incoherent stat
+    line so that callers are aware that no clamping or guard exists.  If a
+    guard is added in the future, this test will catch the change in behaviour.
+
+    singles = 1 - 1 - 1 - 0 = -1
+    tb      = (-1)*1 + 1*2 + 1*3 + 0*4 = -1 + 2 + 3 = 4
+    value   = pa + tb*2 = 0 + 4*2 = 8
+    """
+    stats = batter_stats(hits=1, doubles=1, triples=1, hr=0)
+    # singles will be -1; the formula does NOT clamp, so TB = 4 and value = 8.0
+    result = compute_batter_value(stats)
+    assert result == 8.0, (
+        f"Expected 8.0 (negative singles flows through unclamped), got {result}"
+    )
+
+
+def test_batter_negative_singles_is_not_clamped():
+    """A singles value below zero is NOT clamped to zero by the formula.
+
+    What: Confirms that singles < 0 propagates into TB rather than being
+    floored at 0.  If clamping were added, tb would be 0*1 + 1*2 + 1*3 = 5
+    and value would be 10.0, not 8.0.
+
+    Why: Guards future refactors — if someone adds `singles = max(0, ...)`,
+    this assertion will fail immediately, surfacing the behaviour change.
+    """
+    stats = batter_stats(hits=1, doubles=1, triples=1, hr=0)
+    unclamped_value = compute_batter_value(stats)
+    # If singles were clamped to 0: tb = 0+2+3 = 5, value = 10.0
+    clamped_value = 10.0
+    assert unclamped_value != clamped_value, (
+        "Formula appears to clamp negative singles — behaviour has changed"
+    )
+
+
+# ---------------------------------------------------------------------------
+# T1-2: Tier boundary precision with float SP values
+# ---------------------------------------------------------------------------
+
+
+def test_sp_tier_just_below_t1_outs29():
+    """SP with outs=29 produces IP=9.666..., which is below T1 threshold (10) → T0.
+
+    What: 29 outs / 3 = 9.6666... IP + 0 K = 9.6666... value.
+    The SP T1 threshold is 10.0, so this value is strictly below T1.
+
+    Why: Floating-point IP values accumulate slowly for pitchers.  A bug that
+    truncated or rounded IP upward could cause premature tier advancement.
+    Verify that tier_from_value uses a >= comparison (not >) and handles
+    non-integer values correctly.
+    """
+    stats = pitcher_stats(outs=29, strikeouts=0)
+    value = compute_sp_value(stats)
+    assert value == pytest.approx(29 / 3)  # 9.6666...
+    assert value < 10.0  # strictly below T1
+    assert tier_from_value(value, track_dict("sp")) == 0
+
+
+def test_sp_tier_exactly_t1_outs30():
+    """SP with outs=30 produces IP=10.0, exactly at T1 threshold → T1.
+
+    What: 30 outs / 3 = 10.0 IP + 0 K = 10.0 value.
+    The SP T1 threshold is 10.0, so value == t1 satisfies the >= condition.
+
+    Why: Off-by-one or strictly-greater-than comparisons would classify
+    this as T0 instead of T1.  The boundary value must correctly promote
+    to the matching tier.
+    """
+    stats = pitcher_stats(outs=30, strikeouts=0)
+    value = compute_sp_value(stats)
+    assert value == 10.0
+    assert tier_from_value(value, track_dict("sp")) == 1
+
+
+def test_sp_float_value_at_exact_t2_boundary():
+    """SP value exactly at T2 threshold (40.0) → T2.
+
+    What: outs=120 -> IP=40.0, strikeouts=0 -> value=40.0.
+    T2 threshold for SP is 40.  The >= comparison must promote to T2.
+
+    Why: Validates that all four tier thresholds use inclusive lower-bound
+    comparisons for float values, not just T1.
+    """
+    stats = pitcher_stats(outs=120, strikeouts=0)
+    value = compute_sp_value(stats)
+    assert value == 40.0
+    assert tier_from_value(value, track_dict("sp")) == 2
+
+
+def test_sp_float_value_just_below_t2():
+    """SP value just below T2 (39.999...) stays at T1.
+
+    What: outs=119 -> IP=39.6666..., strikeouts=0 -> value=39.666...
+    This is strictly less than T2=40, so tier should be 1 (already past T1=10).
+
+    Why: Confirms that sub-threshold float values are not prematurely promoted
+    due to floating-point comparison imprecision.
+    """
+    stats = pitcher_stats(outs=119, strikeouts=0)
+    value = compute_sp_value(stats)
+    assert value == pytest.approx(119 / 3)  # 39.666...
+    assert value < 40.0
+    assert tier_from_value(value, track_dict("sp")) == 1

tests/test_postgame_refractor.py

@@ -48,35 +48,41 @@ import os
 os.environ.setdefault("API_TOKEN", "test-token")
 
 import app.services.season_stats as _season_stats_module
+import app.services.refractor_boost as _refractor_boost_module
 import pytest
 from fastapi import FastAPI, Request
 from fastapi.testclient import TestClient
 from peewee import SqliteDatabase
 
 from app.db_engine import (
+    BattingCard,
+    BattingCardRatings,
     Cardset,
-    RefractorCardState,
-    RefractorCosmetic,
-    RefractorTierBoost,
-    RefractorTrack,
+    Decision,
+    Event,
     MlbPlayer,
     Pack,
     PackType,
+    PitchingCard,
+    PitchingCardRatings,
     Player,
     BattingSeasonStats,
     PitchingSeasonStats,
     ProcessedGame,
     Rarity,
+    RefractorBoostAudit,
+    RefractorCardState,
+    RefractorCosmetic,
+    RefractorTierBoost,
+    RefractorTrack,
     Roster,
     RosterSlot,
     ScoutClaim,
     ScoutOpportunity,
     StratGame,
     StratPlay,
-    Decision,
     Team,
     Card,
-    Event,
 )
 
 # ---------------------------------------------------------------------------
@@ -111,15 +117,22 @@ _WP13_MODELS = [
     BattingSeasonStats,
     PitchingSeasonStats,
     ProcessedGame,
+    BattingCard,
+    BattingCardRatings,
+    PitchingCard,
+    PitchingCardRatings,
     RefractorTrack,
     RefractorCardState,
     RefractorTierBoost,
     RefractorCosmetic,
+    RefractorBoostAudit,
 ]
 
-# Patch the service-layer 'db' reference to use our shared test database so
-# that db.atomic() in update_season_stats() operates on the same connection.
+# Patch the service-layer 'db' references to use our shared test database so
+# that db.atomic() in update_season_stats() and apply_tier_boost() operate on
+# the same connection.
 _season_stats_module.db = _wp13_db
+_refractor_boost_module.db = _wp13_db
 
 # ---------------------------------------------------------------------------
 # Auth header used by every authenticated request
@@ -323,6 +336,65 @@ def _make_state(
     )
 
 
+# Base batter ratings that sum to exactly 108 for use in tier advancement tests.
+# apply_tier_boost() requires a base card (variant=0) with ratings rows to
+# create boosted variant cards — tests that push past T1 must set this up.
+_WP13_BASE_BATTER_RATINGS = {
+    "homerun": 3.0,
+    "bp_homerun": 1.0,
+    "triple": 0.5,
+    "double_three": 2.0,
+    "double_two": 2.0,
+    "double_pull": 6.0,
+    "single_two": 4.0,
+    "single_one": 12.0,
+    "single_center": 5.0,
+    "bp_single": 2.0,
+    "hbp": 3.0,
+    "walk": 7.0,
+    "strikeout": 15.0,
+    "lineout": 3.0,
+    "popout": 2.0,
+    "flyout_a": 5.0,
+    "flyout_bq": 4.0,
+    "flyout_lf_b": 3.0,
+    "flyout_rf_b": 9.0,
+    "groundout_a": 6.0,
+    "groundout_b": 8.0,
+    "groundout_c": 5.5,
+}
+
+
+def _make_base_batter_card(player):
+    """Create a BattingCard (variant=0) with two ratings rows for apply_tier_boost()."""
+    card = BattingCard.create(
+        player=player,
+        variant=0,
+        steal_low=1,
+        steal_high=6,
+        steal_auto=False,
+        steal_jump=0.5,
+        bunting="C",
+        hit_and_run="B",
+        running=3,
+        offense_col=2,
+        hand="R",
+    )
+    for vs_hand in ("L", "R"):
+        BattingCardRatings.create(
+            battingcard=card,
+            vs_hand=vs_hand,
+            pull_rate=0.4,
+            center_rate=0.35,
+            slap_rate=0.25,
+            avg=0.300,
+            obp=0.370,
+            slg=0.450,
+            **_WP13_BASE_BATTER_RATINGS,
+        )
+    return card
+
+
 # ---------------------------------------------------------------------------
 # Tests: POST /api/v2/season-stats/update-game/{game_id}
 # ---------------------------------------------------------------------------
@@ -486,6 +558,8 @@ def test_evaluate_game_tier_advancement(client):
     game = _make_game(team_a, team_b)
     track = _make_track(name="WP13 Tier Adv Track")
     _make_state(batter, team_a, track, current_tier=0, current_value=34.0)
+    # Phase 2: base card required so apply_tier_boost() can create a variant.
+    _make_base_batter_card(batter)
 
     # Seed prior stats: 34 PA (value = 34; T1 threshold = 37)
     BattingSeasonStats.create(
@@ -567,6 +641,8 @@ def test_evaluate_game_tier_ups_in_response(client):
     game = _make_game(team_a, team_b)
     track = _make_track(name="WP13 Tier-Ups Track")
     _make_state(batter, team_a, track, current_tier=0)
+    # Phase 2: base card required so apply_tier_boost() can create a variant.
+    _make_base_batter_card(batter)
 
     # Seed prior stats below threshold
     BattingSeasonStats.create(player=batter, team=team_a, season=10, pa=34)
@@ -665,3 +741,565 @@ def test_auth_required_evaluate_game(client):
 
     resp = client.post(f"/api/v2/refractor/evaluate-game/{game.id}")
     assert resp.status_code == 401
+
+
+# ---------------------------------------------------------------------------
+# T1-3: evaluate-game with non-existent game_id
+# ---------------------------------------------------------------------------
+
+
+def test_evaluate_game_nonexistent_game_id(client):
+    """POST /refractor/evaluate-game/99999 with a game_id that does not exist.
+
+    What: There is no StratGame row with id=99999.  The endpoint queries
+    StratPlay for plays in that game, finds zero rows, builds an empty
+    pairs set, and returns without evaluating anyone.
+
+    Why: Documents the confirmed behaviour: 200 with {"evaluated": 0,
+    "tier_ups": []}.  The endpoint does not treat a missing game as an
+    error because StratPlay.select().where(game_id=N) returning 0 rows is
+    a valid (if unusual) outcome — there are simply no players to evaluate.
+
+    If the implementation is ever changed to return 404 for missing games,
+    this test will fail and alert the developer to update the contract.
+    """
+    resp = client.post("/api/v2/refractor/evaluate-game/99999", headers=AUTH_HEADER)
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["evaluated"] == 0
+    assert data["tier_ups"] == []
+
+
+# ---------------------------------------------------------------------------
+# T2-3: evaluate-game with zero plays
+# ---------------------------------------------------------------------------
+
+
+def test_evaluate_game_zero_plays(client):
+    """evaluate-game on a game with no StratPlay rows returns empty results.
+
+    What: Create a StratGame but insert zero StratPlay rows for it.  POST
+    to evaluate-game for that game_id.
+
+    Why: The endpoint builds its player list from StratPlay rows.  A game
+    with no plays has no players to evaluate.  Verify the endpoint does not
+    crash and returns the expected empty-batch shape rather than raising a
+    KeyError or returning an unexpected structure.
+    """
+    team_a = _make_team("ZP1", gmid=20101)
+    team_b = _make_team("ZP2", gmid=20102)
+    game = _make_game(team_a, team_b)
+    # Intentionally no plays created
+
+    resp = client.post(
+        f"/api/v2/refractor/evaluate-game/{game.id}", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["evaluated"] == 0
+    assert data["tier_ups"] == []
+
+
+# ---------------------------------------------------------------------------
+# T2-9: Per-player error isolation in evaluate_game
+# ---------------------------------------------------------------------------
+
+
+def test_evaluate_game_error_isolation(client, monkeypatch):
+    """An exception raised for one player does not abort the rest of the batch.
+
+    What: Create two batters in the same game.  Both have RefractorCardState
+    rows.  Patch evaluate_card in the refractor router to raise RuntimeError
+    on the first call and succeed on the second.  Verify the endpoint returns
+    200, evaluated==1 (not 0 or 2), and no tier_ups from the failing player.
+
+    Why: The evaluate-game loop catches per-player exceptions and logs them.
+    If the isolation breaks, a single bad card would silently drop all
+    evaluations for the rest of the game.  The 'evaluated' count is the
+    observable signal that error isolation is functioning.
+
+    Implementation note: we patch the evaluate_card function inside the
+    router module directly so that the test is independent of how the router
+    imports it.  We use a counter to let the first call fail and the second
+    succeed.
+    """
+    from app.services import refractor_evaluator
+
+    team_a = _make_team("EI1", gmid=20111)
+    team_b = _make_team("EI2", gmid=20112)
+
+    batter_fail = _make_player("WP13 Fail Batter", pos="1B")
+    batter_ok = _make_player("WP13 Ok Batter", pos="1B")
+    pitcher = _make_player("WP13 EI Pitcher", pos="SP")
+
+    game = _make_game(team_a, team_b)
+
+    # Both batters need season stats and a track/state so they are not
+    # skipped by the "no state" guard before evaluate_card is called.
+    track = _make_track(name="EI Batter Track")
+    _make_state(batter_fail, team_a, track)
+    _make_state(batter_ok, team_a, track)
+
+    _make_play(game, 1, batter_fail, team_a, pitcher, team_b, pa=1, ab=1, outs=1)
+    _make_play(game, 2, batter_ok, team_a, pitcher, team_b, pa=1, ab=1, outs=1)
+
+    # The real evaluate_card for batter_ok so we know what it returns
+    real_evaluate = refractor_evaluator.evaluate_card
+
+    call_count = {"n": 0}
+    fail_player_id = batter_fail.player_id
+
+    def patched_evaluate(player_id, team_id, **kwargs):
+        call_count["n"] += 1
+        if player_id == fail_player_id:
+            raise RuntimeError("simulated per-player error")
+        return real_evaluate(player_id, team_id, **kwargs)
+
+    # The router does `from ..services.refractor_evaluator import evaluate_card`
+    # inside the async function body, so the local import re-resolves on each
+    # call.  Patching the function on its source module ensures the local `from`
+    # import picks up our patched version when the route handler executes.
+    monkeypatch.setattr(
+        "app.services.refractor_evaluator.evaluate_card", patched_evaluate
+    )
+
+    resp = client.post(
+        f"/api/v2/refractor/evaluate-game/{game.id}", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+
+    # One player succeeded; one was caught by the exception handler
+    assert data["evaluated"] == 1
+    # The failing player must not appear in tier_ups
+    failing_ids = [tu["player_id"] for tu in data["tier_ups"]]
+    assert fail_player_id not in failing_ids
+
+
+# ---------------------------------------------------------------------------
+# Base pitcher card ratings that sum to exactly 108 for use in pitcher tier
+# advancement tests.
+# Variable columns (18): sum to 79.
+# X-check columns (9):   sum to 29.
+# Total: 108.
+# ---------------------------------------------------------------------------
+
+_WP13_BASE_PITCHER_RATINGS = {
+    # 18 variable outcome columns (sum = 79)
+    "homerun": 2.0,
+    "bp_homerun": 1.0,
+    "triple": 0.5,
+    "double_three": 1.5,
+    "double_two": 2.0,
+    "double_cf": 2.0,
+    "single_two": 3.0,
+    "single_one": 4.0,
+    "single_center": 3.0,
+    "bp_single": 2.0,
+    "hbp": 1.0,
+    "walk": 3.0,
+    "strikeout": 30.0,
+    "flyout_lf_b": 4.0,
+    "flyout_cf_b": 5.0,
+    "flyout_rf_b": 5.0,
+    "groundout_a": 5.0,
+    "groundout_b": 5.0,
+    # 9 x-check columns (sum = 29)
+    "xcheck_p": 4.0,
+    "xcheck_c": 3.0,
+    "xcheck_1b": 3.0,
+    "xcheck_2b": 3.0,
+    "xcheck_3b": 3.0,
+    "xcheck_ss": 3.0,
+    "xcheck_lf": 3.0,
+    "xcheck_cf": 3.0,
+    "xcheck_rf": 4.0,
+}
+
+
+def _make_base_pitcher_card(player):
+    """Create a PitchingCard (variant=0) with two ratings rows for apply_tier_boost().
+
+    Analogous to _make_base_batter_card but for pitcher cards.  Ratings are
+    seeded from _WP13_BASE_PITCHER_RATINGS which satisfies the 108-sum invariant
+    required by apply_tier_boost() (18 variable cols summing to 79 plus 9
+    x-check cols summing to 29 = 108 total).
+    """
+    card = PitchingCard.create(
+        player=player,
+        variant=0,
+        balk=1,
+        wild_pitch=2,
+        hold=3,
+        starter_rating=7,
+        relief_rating=5,
+        closer_rating=None,
+        batting=None,
+        offense_col=1,
+        hand="R",
+    )
+    for vs_hand in ("L", "R"):
+        PitchingCardRatings.create(
+            pitchingcard=card,
+            vs_hand=vs_hand,
+            avg=0.250,
+            obp=0.310,
+            slg=0.360,
+            **_WP13_BASE_PITCHER_RATINGS,
+        )
+    return card
+
+
+# ---------------------------------------------------------------------------
+# Gap 1: REFRACTOR_BOOST_ENABLED=false kill switch
+# ---------------------------------------------------------------------------
+
+
+def test_evaluate_game_boost_disabled_skips_tier_up(client, monkeypatch):
+    """When REFRACTOR_BOOST_ENABLED=false, tier-ups are not reported even if formula says tier-up.
+
+    What: Seed a batter at tier=0 with stats above T1 (pa=34 prior + 4-PA game
+    pushes total to 38 > T1 threshold of 37).  Set REFRACTOR_BOOST_ENABLED=false
+    before calling evaluate-game.
+
+    Why: The kill switch must suppress all tier-up notifications and leave
+    current_tier unchanged so that no variant card is created and no Discord
+    announcement is sent.  If the kill switch is ignored the bot will announce
+    tier-ups during maintenance windows when card creation is deliberately
+    disabled.
+    """
+    monkeypatch.setenv("REFRACTOR_BOOST_ENABLED", "false")
+
+    team_a = _make_team("BD1", gmid=20201)
+    team_b = _make_team("BD2", gmid=20202)
+    batter = _make_player("WP13 KillSwitch Batter")
+    pitcher = _make_player("WP13 KillSwitch Pitcher", pos="SP")
+    game = _make_game(team_a, team_b)
+    track = _make_track(name="WP13 KillSwitch Track")
+    _make_state(batter, team_a, track, current_tier=0, current_value=0.0)
+    _make_base_batter_card(batter)
+
+    # Seed prior stats just below T1
+    BattingSeasonStats.create(player=batter, team=team_a, season=10, pa=34)
+
+    # Game adds 4 PA — total = 38 > T1 (37)
+    for i in range(4):
+        _make_play(game, i + 1, batter, team_a, pitcher, team_b, pa=1, ab=1, outs=1)
+
+    client.post(f"/api/v2/season-stats/update-game/{game.id}", headers=AUTH_HEADER)
+    resp = client.post(
+        f"/api/v2/refractor/evaluate-game/{game.id}", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+
+    # Kill switch: the boost block is bypassed so apply_tier_boost() is never
+    # called and current_tier must remain 0 in the DB.
+    state = RefractorCardState.get(
+        (RefractorCardState.player == batter) & (RefractorCardState.team == team_a)
+    )
+    assert state.current_tier == 0
+
+    # No BattingCard variant must have been created (boost never ran).
+    from app.services.refractor_boost import compute_variant_hash
+
+    t1_hash = compute_variant_hash(batter.player_id, 1)
+    assert (
+        BattingCard.get_or_none(
+            (BattingCard.player == batter) & (BattingCard.variant == t1_hash)
+        )
+        is None
+    ), "Variant card must not be created when boost is disabled"
+
+    # When boost is disabled, no tier_up notification is sent — the router
+    # skips the append entirely to prevent false notifications to the bot.
+    assert len(data["tier_ups"]) == 0
+
+
+# ---------------------------------------------------------------------------
+# Gap 4: Multi-tier jump T0 -> T2 at HTTP layer
+# ---------------------------------------------------------------------------
+
+
+def test_evaluate_game_multi_tier_jump(client):
+    """Player with stats above T2 threshold jumps from T0 to T2 in one game.
+
+    What: Seed a batter at tier=0 with no prior stats.  The game itself
+    provides stats in range [T2=149, T3=448).
+    Using pa=50, hit=50 (all singles): value = 50 + 50*2 = 150.
+
+    Why: The evaluate-game loop must iterate through each tier from old+1 to
+    computed_tier, calling apply_tier_boost() once per tier.  A multi-tier jump
+    must produce variant cards for every intermediate tier and report a single
+    tier_up entry whose new_tier equals the highest tier reached.
+
+    The variant_created in the response must match the T2 hash (not T1), because
+    the last apply_tier_boost() call returns the T2 variant.
+    """
+    from app.services.refractor_boost import compute_variant_hash
+
+    team_a = _make_team("MJ1", gmid=20211)
+    team_b = _make_team("MJ2", gmid=20212)
+    batter = _make_player("WP13 MultiJump Batter")
+    pitcher = _make_player("WP13 MultiJump Pitcher", pos="SP")
+    game = _make_game(team_a, team_b)
+    track = _make_track(name="WP13 MultiJump Track")
+    _make_state(batter, team_a, track, current_tier=0, current_value=0.0)
+    _make_base_batter_card(batter)
+
+    # Target value in range [T2=149, T3=448).
+    # formula: pa + tb*2, tb = singles + 2*doubles + 3*triples + 4*HR.
+    # 50 PA, 50 hits (all singles): tb = 50; value = 50 + 50*2 = 150.
+    # 150 >= T2 (149) and < T3 (448) so tier lands exactly at 2.
+    for i in range(50):
+        _make_play(
+            game, i + 1, batter, team_a, pitcher, team_b, pa=1, ab=1, hit=1, outs=0
+        )
+
+    client.post(f"/api/v2/season-stats/update-game/{game.id}", headers=AUTH_HEADER)
+    resp = client.post(
+        f"/api/v2/refractor/evaluate-game/{game.id}", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+
+    # Must have exactly one tier_up entry for this player.
+    assert len(data["tier_ups"]) == 1
+    tu = data["tier_ups"][0]
+    assert tu["old_tier"] == 0
+    assert tu["new_tier"] == 2
+
+    # The variant_created must match T2 hash (last boost iteration).
+    expected_t2_hash = compute_variant_hash(batter.player_id, 2)
+    assert tu["variant_created"] == expected_t2_hash
+
+    # Both T1 and T2 variant BattingCard rows must exist.
+    t1_hash = compute_variant_hash(batter.player_id, 1)
+    t2_hash = compute_variant_hash(batter.player_id, 2)
+    assert (
+        BattingCard.get_or_none(
+            (BattingCard.player == batter) & (BattingCard.variant == t1_hash)
+        )
+        is not None
+    ), "T1 variant card missing"
+    assert (
+        BattingCard.get_or_none(
+            (BattingCard.player == batter) & (BattingCard.variant == t2_hash)
+        )
+        is not None
+    ), "T2 variant card missing"
+
+    # DB state must reflect T2.
+    state = RefractorCardState.get(
+        (RefractorCardState.player == batter) & (RefractorCardState.team == team_a)
+    )
+    assert state.current_tier == 2
+
+
+# ---------------------------------------------------------------------------
+# Gap 5: Pitcher through evaluate-game
+# ---------------------------------------------------------------------------
+
+
+def test_evaluate_game_pitcher_tier_advancement(client):
+    """Pitcher reaching T1 through evaluate-game creates a boosted PitchingCard variant.
+
+    What: Create a pitcher player with a PitchingCard + PitchingCardRatings
+    (variant=0) and a RefractorCardState on the 'sp' track.  Seed
+    PitchingSeasonStats with outs and strikeouts just below T1 (prior season),
+    then add a game where the pitcher appears and records enough additional outs
+    to cross the threshold.
+
+    The pitcher formula is: outs/3 + strikeouts.  Track thresholds are the same
+    (t1=37).  Prior season: outs=60, strikeouts=16 -> value = 20 + 16 = 36.
+    Game adds 3 outs + 1 K -> career total outs=63, strikeouts=17 -> 21+17=38.
+
+    Why: Pitcher boost must follow the same evaluate-game flow as batter boost.
+    If card_type='sp' is not handled, the pitcher track silently skips the boost
+    and no tier_ups entry is emitted even when the threshold is passed.
+    """
+    team_a = _make_team("PT1", gmid=20221)
+    team_b = _make_team("PT2", gmid=20222)
+    pitcher = _make_player("WP13 TierPitcher", pos="SP")
+    # We need a batter for the play records (pitcher is pitcher side).
+    batter = _make_player("WP13 PitcherTest Batter")
+    game = _make_game(team_a, team_b)
+
+    sp_track, _ = RefractorTrack.get_or_create(
+        name="WP13 SP Track",
+        defaults=dict(
+            card_type="sp",
+            formula="outs / 3 + strikeouts",
+            t1_threshold=37,
+            t2_threshold=149,
+            t3_threshold=448,
+            t4_threshold=896,
+        ),
+    )
+    _make_state(pitcher, team_a, sp_track, current_tier=0, current_value=0.0)
+    _make_base_pitcher_card(pitcher)
+
+    # Prior season: outs=60, K=16 -> 60/3 + 16 = 36 (below T1=37)
+    PitchingSeasonStats.create(
+        player=pitcher,
+        team=team_a,
+        season=10,
+        outs=60,
+        strikeouts=16,
+    )
+
+    # Game: pitcher records 3 outs (1 inning) and 1 K.
+    # Career after game: outs=63, K=17 -> 63/3 + 17 = 21 + 17 = 38 > T1=37.
+    _make_play(
+        game,
+        1,
+        batter,
+        team_b,
+        pitcher,
+        team_a,
+        pa=1,
+        ab=1,
+        outs=3,
+        so=1,
+    )
+
+    client.post(f"/api/v2/season-stats/update-game/{game.id}", headers=AUTH_HEADER)
+    resp = client.post(
+        f"/api/v2/refractor/evaluate-game/{game.id}", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+
+    # The pitcher must appear in tier_ups.
+    pitcher_ups = [
+        tu for tu in data["tier_ups"] if tu["player_id"] == pitcher.player_id
+    ]
+    assert len(pitcher_ups) == 1, (
+        f"Expected 1 tier_up for pitcher, got: {data['tier_ups']}"
+    )
+    tu = pitcher_ups[0]
+    assert tu["old_tier"] == 0
+    assert tu["new_tier"] >= 1
+
+    # A boosted PitchingCard variant must exist in the database.
+    from app.services.refractor_boost import compute_variant_hash
+
+    t1_hash = compute_variant_hash(pitcher.player_id, 1)
+    variant_card = PitchingCard.get_or_none(
+        (PitchingCard.player == pitcher) & (PitchingCard.variant == t1_hash)
+    )
+    assert variant_card is not None, "T1 PitchingCard variant was not created"
+
+
+# ---------------------------------------------------------------------------
+# Gap 7: variant_created field in tier_up response
+# ---------------------------------------------------------------------------
+
+
+def test_evaluate_game_tier_up_includes_variant_created(client):
+    """Tier-up response includes variant_created with the correct hash.
+
+    What: Seed a batter at tier=0 with stats that push past T1.  After
+    evaluate-game, the tier_ups entry must contain a 'variant_created' key
+    whose value matches compute_variant_hash(player_id, 1) and is a positive
+    non-zero integer.
+
+    Why: The bot reads variant_created to update the card image URL after a
+    tier-up.  A missing or incorrect hash will point the bot at the wrong card
+    image (or no image at all), breaking the tier-up animation in Discord.
+    """
+    from app.services.refractor_boost import compute_variant_hash
+
+    team_a = _make_team("VC1", gmid=20231)
+    team_b = _make_team("VC2", gmid=20232)
+    batter = _make_player("WP13 VariantCreated Batter")
+    pitcher = _make_player("WP13 VariantCreated Pitcher", pos="SP")
+    game = _make_game(team_a, team_b)
+    track = _make_track(name="WP13 VariantCreated Track")
+    _make_state(batter, team_a, track, current_tier=0, current_value=0.0)
+    _make_base_batter_card(batter)
+
+    # Prior season: pa=34, well below T1=37
+    BattingSeasonStats.create(player=batter, team=team_a, season=10, pa=34)
+
+    # Game: 4 PA -> total pa=38 > T1=37
+    for i in range(4):
+        _make_play(game, i + 1, batter, team_a, pitcher, team_b, pa=1, ab=1, outs=1)
+
+    client.post(f"/api/v2/season-stats/update-game/{game.id}", headers=AUTH_HEADER)
+    resp = client.post(
+        f"/api/v2/refractor/evaluate-game/{game.id}", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+
+    assert len(data["tier_ups"]) == 1
+    tu = data["tier_ups"][0]
+
+    # variant_created must be present, non-zero, and match the T1 hash.
+    assert "variant_created" in tu, "variant_created key missing from tier_up entry"
+    assert isinstance(tu["variant_created"], int)
+    assert tu["variant_created"] != 0
+
+    expected_hash = compute_variant_hash(batter.player_id, 1)
+    assert tu["variant_created"] == expected_hash
+
+
+# ---------------------------------------------------------------------------
+# Gap 8: Empty card_type on track produces no tier-up
+# ---------------------------------------------------------------------------
+
+
+def test_evaluate_game_skips_boost_when_track_has_no_card_type(client):
+    """Track with empty card_type produces no tier-up notification.
+
+    What: Create a RefractorTrack with card_type="" (empty string) and seed a
+    batter with stats above T1.  Call evaluate-game.
+
+    Why: apply_tier_boost() requires a valid card_type to know which card model
+    to use.  When card_type is empty or None the boost cannot run.  The endpoint
+    must log a warning and skip the tier-up notification entirely — it must NOT
+    report a tier-up that was never applied to the database.  Reporting a phantom
+    tier-up would cause the bot to announce a card upgrade that does not exist.
+    """
+    team_a = _make_team("NC1", gmid=20241)
+    team_b = _make_team("NC2", gmid=20242)
+    batter = _make_player("WP13 NoCardType Batter")
+    pitcher = _make_player("WP13 NoCardType Pitcher", pos="SP")
+    game = _make_game(team_a, team_b)
+
+    # Create track with card_type="" — an intentionally invalid/empty value.
+    empty_type_track, _ = RefractorTrack.get_or_create(
+        name="WP13 NoCardType Track",
+        defaults=dict(
+            card_type="",
+            formula="pa + tb * 2",
+            t1_threshold=37,
+            t2_threshold=149,
+            t3_threshold=448,
+            t4_threshold=896,
+        ),
+    )
+    _make_state(batter, team_a, empty_type_track, current_tier=0, current_value=0.0)
+
+    # Prior stats below T1; game pushes past T1.
+    BattingSeasonStats.create(player=batter, team=team_a, season=10, pa=34)
+
+    for i in range(4):
+        _make_play(game, i + 1, batter, team_a, pitcher, team_b, pa=1, ab=1, outs=1)
+
+    client.post(f"/api/v2/season-stats/update-game/{game.id}", headers=AUTH_HEADER)
+    resp = client.post(
+        f"/api/v2/refractor/evaluate-game/{game.id}", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+
+    # No tier-up must be reported when card_type is empty.
+    assert data["tier_ups"] == []
+
+    # current_tier must remain 0 — boost was never applied.
+    state = RefractorCardState.get(
+        (RefractorCardState.player == batter) & (RefractorCardState.team == team_a)
+    )
+    assert state.current_tier == 0

tests/test_refractor_evaluator.py

@@ -187,10 +187,11 @@ def _make_stats(player_id, team_id, season, **kwargs):
     )
 
 
-def _eval(player_id, team_id):
+def _eval(player_id, team_id, dry_run: bool = False):
     return evaluate_card(
         player_id,
         team_id,
+        dry_run=dry_run,
         _stats_model=StatsStub,
         _state_model=CardStateStub,
         _compute_value_fn=_compute_value,
@@ -325,6 +326,59 @@ class TestCareerTotals:
         assert result["current_value"] == 50.0
 
 
+class TestFullyEvolvedPersistence:
+    """T2-1: fully_evolved=True is preserved even when stats drop or are absent."""
+
+    def test_fully_evolved_persists_when_stats_zeroed(self, batter_track):
+        """Card at T4/fully_evolved=True stays fully_evolved after stats are removed.
+
+        What: Set up a RefractorCardState at tier=4 with fully_evolved=True.
+        Then call evaluate_card with no season stats rows (zero career totals).
+        The evaluator computes value=0 -> new_tier=0, but current_tier must
+        stay at 4 (no regression) and fully_evolved must remain True.
+
+        Why: fully_evolved is a permanent achievement flag — it must not be
+        revoked if a team's stats are rolled back, corrected, or simply not
+        yet imported.  The no-regression rule (max(current, new)) prevents
+        tier demotion; this test confirms that fully_evolved follows the same
+        protection.
+        """
+        # Seed state at T4 fully_evolved
+        _make_state(1, 1, batter_track, current_tier=4, current_value=900.0)
+        # No stats rows — career totals will be all zeros
+        # (no _make_stats call)
+
+        result = _eval(1, 1)
+
+        # The no-regression rule keeps tier at 4
+        assert result["current_tier"] == 4, (
+            f"Expected tier=4 (no regression), got {result['current_tier']}"
+        )
+        # fully_evolved must still be True since tier >= 4
+        assert result["fully_evolved"] is True, (
+            "fully_evolved was reset to False after re-evaluation with zero stats"
+        )
+
+    def test_fully_evolved_persists_with_partial_stats(self, batter_track):
+        """Card at T4 stays fully_evolved even with stats below T1.
+
+        What: Same setup as above but with a season stats row giving value=30
+        (below T1=37).  The computed tier would be 0, but current_tier must
+        not regress from 4.
+
+        Why: Validates that no-regression applies regardless of whether stats
+        are zero or merely insufficient for the achieved tier.
+        """
+        _make_state(1, 1, batter_track, current_tier=4, current_value=900.0)
+        # pa=30 -> value=30, which is below T1=37 -> computed tier=0
+        _make_stats(1, 1, 1, pa=30)
+
+        result = _eval(1, 1)
+
+        assert result["current_tier"] == 4
+        assert result["fully_evolved"] is True
+
+
 class TestMissingState:
     """ValueError when no card state exists for (player_id, team_id)."""
 
@@ -339,13 +393,20 @@ class TestReturnShape:
     """Return dict has the expected keys and types."""
 
     def test_return_keys(self, batter_track):
-        """Result dict contains all expected keys."""
+        """Result dict contains all expected keys.
+
+        Phase 2 addition: 'computed_tier' is included alongside 'current_tier'
+        so that evaluate-game can detect tier-ups without writing the tier
+        (dry_run=True path).  Both keys must always be present.
+        """
         _make_state(1, 1, batter_track)
         result = _eval(1, 1)
         assert set(result.keys()) == {
             "player_id",
             "team_id",
             "current_tier",
+            "computed_tier",
+            "computed_fully_evolved",
             "current_value",
             "fully_evolved",
             "last_evaluated_at",
@@ -359,3 +420,385 @@ class TestReturnShape:
         assert isinstance(ts, str) and len(ts) > 0
         # Must be parseable as a datetime
         datetime.fromisoformat(ts)
+
+
+class TestFullyEvolvedFlagCorrection:
+    """T3-7: fully_evolved/tier mismatch is corrected by evaluate_card.
+
+    A database corruption where fully_evolved=True but current_tier < 4 can
+    occur if the flag was set incorrectly by a migration or external script.
+    evaluate_card must re-derive fully_evolved from the freshly-computed tier
+    (after the no-regression max() is applied), not trust the stored flag.
+    """
+
+    def test_fully_evolved_flag_corrected_when_tier_below_4(self, batter_track):
+        """fully_evolved=True with current_tier=3 is corrected to False after evaluation.
+
+        What: Manually set database state to fully_evolved=True, current_tier=3
+        (a corruption scenario — tier 3 cannot be "fully evolved" since T4 is
+        the maximum tier).  Provide stats that compute to a value in the T3
+        range (value=500, which is >= T3=448 but < T4=896).
+
+        After evaluate_card:
+          - computed value = 500 → new_tier = 3
+          - no-regression: max(current_tier=3, new_tier=3) = 3  → tier stays 3
+          - fully_evolved = (3 >= 4) = False  → flag is corrected
+
+        Why: The evaluator always recomputes fully_evolved from the final
+        current_tier rather than preserving the stored flag.  This ensures
+        that a corrupted fully_evolved=True at tier<4 is silently repaired
+        on the next evaluation without requiring a separate migration.
+        """
+        # Inject corruption: fully_evolved=True but tier=3
+        state = CardStateStub.create(
+            player_id=1,
+            team_id=1,
+            track=batter_track,
+            current_tier=3,
+            current_value=500.0,
+            fully_evolved=True,  # intentionally wrong
+            last_evaluated_at=None,
+        )
+        # Stats that compute to value=500: pa=500, no hits → value=500+0=500
+        # T3 threshold=448, T4 threshold=896 → tier=3, NOT 4
+        _make_stats(1, 1, 1, pa=500)
+
+        result = _eval(1, 1)
+
+        assert result["current_tier"] == 3, (
+            f"Expected tier=3 after evaluation with value=500, got {result['current_tier']}"
+        )
+        assert result["fully_evolved"] is False, (
+            "fully_evolved should have been corrected to False for tier=3, "
+            f"got {result['fully_evolved']}"
+        )
+
+        # Confirm the database row was updated (not just the return dict)
+        state_reloaded = CardStateStub.get_by_id(state.id)
+        assert state_reloaded.fully_evolved is False, (
+            "fully_evolved was not persisted as False after correction"
+        )
+
+    def test_fully_evolved_flag_preserved_when_tier_reaches_4(self, batter_track):
+        """fully_evolved=True with current_tier=3 stays True when new stats push to T4.
+
+        What: Same corruption setup as above (fully_evolved=True, tier=3),
+        but now provide stats with value=900 (>= T4=896).
+
+        After evaluate_card:
+          - computed value = 900 → new_tier = 4
+          - no-regression: max(current_tier=3, new_tier=4) = 4  → advances to 4
+          - fully_evolved = (4 >= 4) = True  → flag stays True (correctly)
+
+        Why: Confirms the evaluator correctly sets fully_evolved=True when
+        the re-computed tier legitimately reaches T4 regardless of whether
+        the stored flag was already True before evaluation.
+        """
+        CardStateStub.create(
+            player_id=1,
+            team_id=1,
+            track=batter_track,
+            current_tier=3,
+            current_value=500.0,
+            fully_evolved=True,  # stored flag (will be re-derived)
+            last_evaluated_at=None,
+        )
+        # pa=900 → value=900 >= T4=896 → new_tier=4
+        _make_stats(1, 1, 1, pa=900)
+
+        result = _eval(1, 1)
+
+        assert result["current_tier"] == 4, (
+            f"Expected tier=4 for value=900, got {result['current_tier']}"
+        )
+        assert result["fully_evolved"] is True, (
+            f"Expected fully_evolved=True for tier=4, got {result['fully_evolved']}"
+        )
+
+
+class TestMultiTeamStatIsolation:
+    """T3-8: A player's refractor value is isolated to a specific team's stats.
+
+    The evaluator queries BattingSeasonStats WHERE player_id=? AND team_id=?.
+    When a player has stats on two different teams in the same season, each
+    team's RefractorCardState must reflect only that team's stats — not a
+    combined total.
+    """
+
+    def test_multi_team_same_season_stats_isolated(self, batter_track):
+        """Each team's refractor value reflects only that team's stats, not combined.
+
+        What: Create one player with BattingSeasonStats on team_id=1 (pa=80)
+        and team_id=2 (pa=120) in the same season.  Create a RefractorCardState
+        for each team.  Evaluate each team's card separately and verify:
+          - Team 1 state: value = 80 → tier = T1 (80 >= T1=37, < T2=149)
+          - Team 2 state: value = 120 → tier = T1 (120 >= T1=37, < T2=149)
+          - Neither value equals the combined total (80+120=200 → would be T2)
+
+        Why: Confirms the `WHERE player_id=? AND team_id=?` filter in the
+        evaluator is correctly applied.  Without proper team isolation, the
+        combined total of 200 would cross the T2 threshold (149) and both
+        states would be incorrectly assigned to T2.  This is a critical
+        correctness requirement: a player traded between teams should have
+        separate refractor progressions for their time with each franchise.
+        """
+        # Stats on team 1: pa=80 → value=80 (T1: 37<=80<149)
+        _make_stats(player_id=1, team_id=1, season=11, pa=80)
+        # Stats on team 2: pa=120 → value=120 (T1: 37<=120<149)
+        _make_stats(player_id=1, team_id=2, season=11, pa=120)
+
+        # combined pa would be 200 → value=200 → T2 (149<=200<448)
+        # Each team must see only its own stats, not 200
+
+        _make_state(player_id=1, team_id=1, track=batter_track)
+        _make_state(player_id=1, team_id=2, track=batter_track)
+
+        result_team1 = _eval(player_id=1, team_id=1)
+        result_team2 = _eval(player_id=1, team_id=2)
+
+        # Team 1: only pa=80 counted → value=80 → T1
+        assert result_team1["current_value"] == 80.0, (
+            f"Team 1 value should be 80.0 (its own stats only), "
+            f"got {result_team1['current_value']}"
+        )
+        assert result_team1["current_tier"] == 1, (
+            f"Team 1 tier should be T1 for value=80, got {result_team1['current_tier']}"
+        )
+
+        # Team 2: only pa=120 counted → value=120 → T1
+        assert result_team2["current_value"] == 120.0, (
+            f"Team 2 value should be 120.0 (its own stats only), "
+            f"got {result_team2['current_value']}"
+        )
+        assert result_team2["current_tier"] == 1, (
+            f"Team 2 tier should be T1 for value=120, got {result_team2['current_tier']}"
+        )
+
+        # Sanity: neither team crossed T2 (which would happen if stats were combined)
+        assert (
+            result_team1["current_tier"] != 2 and result_team2["current_tier"] != 2
+        ), (
+            "At least one team was incorrectly assigned T2 — stats may have been combined"
+        )
+
+    def test_multi_team_different_seasons_isolated(self, batter_track):
+        """Stats for the same player across multiple seasons remain per-team isolated.
+
+        What: Same player with two seasons of stats for each of two teams:
+          - team_id=1: season 10 pa=90, season 11 pa=70 → combined=160
+          - team_id=2: season 10 pa=100, season 11 pa=80 → combined=180
+
+        After evaluation:
+          - Team 1: value=160 → T2 (149<=160<448)
+          - Team 2: value=180 → T2 (149<=180<448)
+
+        The test confirms that cross-team season aggregation does not bleed
+        stats from team 2 into team 1's calculation or vice versa.
+
+        Why: Multi-season aggregation and multi-team isolation must work
+        together.  A bug that incorrectly sums all player stats regardless
+        of team would produce combined values of 340 → T2, which coincidentally
+        passes, but the per-team values and tiers would be wrong.
+        This test uses values where cross-contamination would produce a
+        materially different value (340 vs 160/180), catching that class of bug.
+        """
+        # Team 1 stats: total pa=160 → value=160 → T2
+        _make_stats(player_id=1, team_id=1, season=10, pa=90)
+        _make_stats(player_id=1, team_id=1, season=11, pa=70)
+
+        # Team 2 stats: total pa=180 → value=180 → T2
+        _make_stats(player_id=1, team_id=2, season=10, pa=100)
+        _make_stats(player_id=1, team_id=2, season=11, pa=80)
+
+        _make_state(player_id=1, team_id=1, track=batter_track)
+        _make_state(player_id=1, team_id=2, track=batter_track)
+
+        result_team1 = _eval(player_id=1, team_id=1)
+        result_team2 = _eval(player_id=1, team_id=2)
+
+        assert result_team1["current_value"] == 160.0, (
+            f"Team 1 multi-season value should be 160.0, got {result_team1['current_value']}"
+        )
+        assert result_team1["current_tier"] == 2, (
+            f"Team 1 tier should be T2 for value=160, got {result_team1['current_tier']}"
+        )
+
+        assert result_team2["current_value"] == 180.0, (
+            f"Team 2 multi-season value should be 180.0, got {result_team2['current_value']}"
+        )
+        assert result_team2["current_tier"] == 2, (
+            f"Team 2 tier should be T2 for value=180, got {result_team2['current_tier']}"
+        )
+
+
+class TestDryRun:
+    """dry_run=True writes current_value and last_evaluated_at but NOT current_tier
+    or fully_evolved, allowing apply_tier_boost() to write tier + variant atomically.
+
+    All tests use stats that would produce a tier-up (value=160 → T2) on a card
+    seeded at tier=0, so the delta between dry and non-dry behaviour is obvious.
+
+    Stub thresholds (batter): T1=37, T2=149, T3=448, T4=896.
+    value=160 → T2 (149 <= 160 < 448); starting current_tier=0 → tier-up to T2.
+    """
+
+    def test_dry_run_does_not_write_current_tier(self, batter_track):
+        """dry_run=True leaves current_tier unchanged in the database.
+
+        What: Seed a card at tier=0.  Provide stats that would advance to T2
+        (value=160).  Call evaluate_card with dry_run=True.  Re-read the DB row
+        and assert current_tier is still 0.
+
+        Why: The dry_run path must not persist the tier so that apply_tier_boost()
+        can write tier + variant atomically on the next step.  If current_tier
+        were written here, a boost failure would leave the tier advanced with no
+        corresponding variant, causing an inconsistent state.
+        """
+        _make_state(1, 1, batter_track, current_tier=0)
+        _make_stats(1, 1, 1, pa=160)
+
+        _eval(1, 1, dry_run=True)
+
+        reloaded = CardStateStub.get(
+            (CardStateStub.player_id == 1) & (CardStateStub.team_id == 1)
+        )
+        assert reloaded.current_tier == 0, (
+            f"dry_run should not write current_tier; expected 0, got {reloaded.current_tier}"
+        )
+
+    def test_dry_run_does_not_write_fully_evolved(self, batter_track):
+        """dry_run=True leaves fully_evolved=False unchanged in the database.
+
+        What: Seed a card at tier=0 with fully_evolved=False.  Provide stats that
+        would push to T4 (value=900).  Call evaluate_card with dry_run=True.
+        Re-read the DB row and assert fully_evolved is still False.
+
+        Why: fully_evolved follows current_tier and must be written atomically
+        by apply_tier_boost().  Writing it here would let the flag get out of
+        sync with the tier if the boost subsequently fails.
+        """
+        _make_state(1, 1, batter_track, current_tier=0)
+        _make_stats(1, 1, 1, pa=900)  # value=900 → T4 → fully_evolved=True normally
+
+        _eval(1, 1, dry_run=True)
+
+        reloaded = CardStateStub.get(
+            (CardStateStub.player_id == 1) & (CardStateStub.team_id == 1)
+        )
+        assert reloaded.fully_evolved is False, (
+            "dry_run should not write fully_evolved; expected False, "
+            f"got {reloaded.fully_evolved}"
+        )
+
+    def test_dry_run_writes_current_value(self, batter_track):
+        """dry_run=True DOES update current_value in the database.
+
+        What: Seed a card with current_value=0.  Provide stats giving value=160.
+        Call evaluate_card with dry_run=True.  Re-read the DB row and assert
+        current_value has been updated to 160.0.
+
+        Why: current_value tracks formula progress and is safe to write
+        at any time — it does not affect game logic atomicity, so it is
+        always persisted regardless of dry_run.
+        """
+        _make_state(1, 1, batter_track, current_value=0.0)
+        _make_stats(1, 1, 1, pa=160)
+
+        _eval(1, 1, dry_run=True)
+
+        reloaded = CardStateStub.get(
+            (CardStateStub.player_id == 1) & (CardStateStub.team_id == 1)
+        )
+        assert reloaded.current_value == 160.0, (
+            f"dry_run should still write current_value; expected 160.0, "
+            f"got {reloaded.current_value}"
+        )
+
+    def test_dry_run_writes_last_evaluated_at(self, batter_track):
+        """dry_run=True DOES update last_evaluated_at in the database.
+
+        What: Seed a card with last_evaluated_at=None.  Call evaluate_card with
+        dry_run=True.  Re-read the DB row and assert last_evaluated_at is now a
+        non-None datetime.
+
+        Why: last_evaluated_at is a bookkeeping field used for scheduling and
+        audit purposes.  It is safe to update independently of tier writes
+        and should always reflect the most recent evaluation attempt.
+        """
+        _make_state(1, 1, batter_track)
+        _make_stats(1, 1, 1, pa=160)
+
+        _eval(1, 1, dry_run=True)
+
+        reloaded = CardStateStub.get(
+            (CardStateStub.player_id == 1) & (CardStateStub.team_id == 1)
+        )
+        assert reloaded.last_evaluated_at is not None, (
+            "dry_run should still write last_evaluated_at; got None"
+        )
+
+    def test_dry_run_returns_computed_tier(self, batter_track):
+        """dry_run=True return dict has computed_tier=T2 while current_tier stays 0.
+
+        What: Seed at tier=0.  Stats → value=160 → T2.  Call dry_run=True.
+        Assert:
+          - result["computed_tier"] == 2  (what the formula says)
+          - result["current_tier"] == 0   (what is stored; unchanged)
+
+        Why: Callers use the divergence between computed_tier and current_tier
+        to detect a pending tier-up.  Both keys must be present and correct for
+        the evaluate-game endpoint to gate apply_tier_boost() correctly.
+        """
+        _make_state(1, 1, batter_track, current_tier=0)
+        _make_stats(1, 1, 1, pa=160)
+
+        result = _eval(1, 1, dry_run=True)
+
+        assert result["computed_tier"] == 2, (
+            f"computed_tier should reflect formula result T2; got {result['computed_tier']}"
+        )
+        assert result["current_tier"] == 0, (
+            f"current_tier should reflect unchanged DB value 0; got {result['current_tier']}"
+        )
+
+    def test_dry_run_returns_computed_fully_evolved(self, batter_track):
+        """dry_run=True sets computed_fully_evolved correctly in the return dict.
+
+        What: Two sub-cases:
+          - Stats → value=160 → T2: computed_fully_evolved should be False.
+          - Stats → value=900 → T4: computed_fully_evolved should be True.
+        In both cases fully_evolved in the DB remains False (tier not written).
+
+        Why: computed_fully_evolved lets callers know whether the pending tier-up
+        will result in a fully-evolved card without having to re-query the DB
+        or recalculate the tier themselves.  It must match (computed_tier >= 4),
+        not the stored fully_evolved value.
+        """
+        # Sub-case 1: computed T2 → computed_fully_evolved=False
+        _make_state(1, 1, batter_track, current_tier=0)
+        _make_stats(1, 1, 1, pa=160)
+
+        result = _eval(1, 1, dry_run=True)
+
+        assert result["computed_fully_evolved"] is False, (
+            f"computed_fully_evolved should be False for T2; got {result['computed_fully_evolved']}"
+        )
+        assert result["fully_evolved"] is False, (
+            "stored fully_evolved should remain False after dry_run"
+        )
+
+        # Reset for sub-case 2: computed T4 → computed_fully_evolved=True
+        CardStateStub.delete().execute()
+        StatsStub.delete().execute()
+
+        _make_state(1, 1, batter_track, current_tier=0)
+        _make_stats(1, 1, 1, pa=900)  # value=900 → T4
+
+        result2 = _eval(1, 1, dry_run=True)
+
+        assert result2["computed_fully_evolved"] is True, (
+            f"computed_fully_evolved should be True for T4; got {result2['computed_fully_evolved']}"
+        )
+        assert result2["fully_evolved"] is False, (
+            "stored fully_evolved should remain False after dry_run even at T4"
+        )

tests/test_refractor_init.py

@@ -158,6 +158,50 @@ class TestDetermineCardType:
 # ---------------------------------------------------------------------------
 
 
+class TestDetermineCardTypeEdgeCases:
+    """T2-2: Parametrized edge cases for _determine_card_type.
+
+    Covers all the boundary inputs identified in the PO review:
+    DH, C, 2B (batters), empty string, None, and the compound 'SP/RP'
+    which contains both 'SP' and 'RP' substrings.
+
+    The function checks 'SP' before 'RP'/'CP', so 'SP/RP' resolves to 'sp'.
+    """
+
+    @pytest.mark.parametrize(
+        "pos_1, expected",
+        [
+            # Plain batter positions
+            ("DH", "batter"),
+            ("C", "batter"),
+            ("2B", "batter"),
+            # Empty / None — fall through to batter default
+            ("", "batter"),
+            (None, "batter"),
+            # Compound string containing 'SP' first — must resolve to 'sp'
+            # because _determine_card_type checks "SP" in pos.upper() before RP/CP
+            ("SP/RP", "sp"),
+        ],
+    )
+    def test_position_mapping(self, pos_1, expected):
+        """_determine_card_type maps each pos_1 value to the expected card_type.
+
+        What: Directly exercises _determine_card_type with the given pos_1 string.
+        None is handled by the `(player.pos_1 or "").upper()` guard in the
+        implementation, so it falls through to 'batter'.
+
+        Why: The card_type string is the key used to look up a RefractorTrack.
+        An incorrect mapping silently assigns the wrong thresholds to a player's
+        entire refractor journey.  Parametrized so each edge case is a
+        distinct, independently reported test failure.
+        """
+        player = _FakePlayer(pos_1)
+        assert _determine_card_type(player) == expected, (
+            f"pos_1={pos_1!r}: expected {expected!r}, "
+            f"got {_determine_card_type(player)!r}"
+        )
+
+
 class TestInitializeCardEvolution:
     """Integration tests for initialize_card_refractor against in-memory SQLite.
 

tests/test_refractor_seed.py

@@ -124,6 +124,89 @@ def test_seed_idempotent():
     assert RefractorTrack.select().count() == 3
 
 
+# ---------------------------------------------------------------------------
+# T1-4: Seed threshold ordering invariant (t1 < t2 < t3 < t4 + all positive)
+# ---------------------------------------------------------------------------
+
+
+def test_seed_all_thresholds_strictly_ascending_after_seed():
+    """After seeding, every track satisfies t1 < t2 < t3 < t4.
+
+    What: Call seed_refractor_tracks(), then assert the full ordering chain
+    t1 < t2 < t3 < t4 for every row in the database.  Also assert that all
+    four thresholds are strictly positive (> 0).
+
+    Why: The refractor tier engine uses these thresholds as exclusive partition
+    points.  If any threshold is out-of-order or zero the tier assignment
+    becomes incorrect or undefined.  This test is the authoritative invariant
+    guard; if a JSON edit accidentally violates the ordering this test fails
+    loudly before any cards are affected.
+
+    Separate from test_seed_thresholds_ascending which was written earlier —
+    this test combines ordering + positivity into a single explicit assertion
+    block and uses more descriptive messages to aid debugging.
+    """
+    seed_refractor_tracks()
+    for track in RefractorTrack.select():
+        assert track.t1_threshold > 0, (
+            f"{track.name}: t1_threshold={track.t1_threshold} is not positive"
+        )
+        assert track.t2_threshold > 0, (
+            f"{track.name}: t2_threshold={track.t2_threshold} is not positive"
+        )
+        assert track.t3_threshold > 0, (
+            f"{track.name}: t3_threshold={track.t3_threshold} is not positive"
+        )
+        assert track.t4_threshold > 0, (
+            f"{track.name}: t4_threshold={track.t4_threshold} is not positive"
+        )
+        assert (
+            track.t1_threshold
+            < track.t2_threshold
+            < track.t3_threshold
+            < track.t4_threshold
+        ), (
+            f"{track.name}: thresholds are not strictly ascending: "
+            f"t1={track.t1_threshold}, t2={track.t2_threshold}, "
+            f"t3={track.t3_threshold}, t4={track.t4_threshold}"
+        )
+
+
+# ---------------------------------------------------------------------------
+# T2-10: Duplicate card_type tracks guard
+# ---------------------------------------------------------------------------
+
+
+def test_seed_each_card_type_has_exactly_one_track():
+    """Each card_type must appear exactly once across all RefractorTrack rows.
+
+    What: After seeding, group the rows by card_type and assert that every
+    card_type has a count of exactly 1.
+
+    Why: RefractorTrack rows are looked up by card_type (e.g.
+    RefractorTrack.get(card_type='batter')).  If a card_type appears more
+    than once, Peewee's .get() raises MultipleObjectsReturned, crashing
+    every pack opening and card evaluation for that type.  This test acts as
+    a uniqueness contract so that seed bugs or accidental DB drift surface
+    immediately.
+    """
+    seed_refractor_tracks()
+    from peewee import fn as peewee_fn
+
+    # Group by card_type and count occurrences
+    query = (
+        RefractorTrack.select(
+            RefractorTrack.card_type, peewee_fn.COUNT(RefractorTrack.id).alias("cnt")
+        )
+        .group_by(RefractorTrack.card_type)
+        .tuples()
+    )
+    for card_type, count in query:
+        assert count == 1, (
+            f"card_type={card_type!r} has {count} tracks; expected exactly 1"
+        )
+
+
 def test_seed_updates_on_rerun(json_tracks):
     """A second seed call must restore any manually changed threshold to the JSON value.
 

tests/test_refractor_state_api.py

@@ -34,12 +34,47 @@ Test matrix
   test_get_card_404_no_state          -- card with no RefractorCardState returns 404
   test_duplicate_cards_share_state    -- two cards same player+team return the same state row
   test_auth_required                  -- missing token returns 401 on both endpoints
+
+Tier 3 tests (T3-6) use a SQLite-backed TestClient and run without a PostgreSQL
+connection.  They test GET /api/v2/refractor/cards/{card_id} when the state row
+has last_evaluated_at=None (card initialised but never evaluated).
+  test_get_card_state_last_evaluated_at_null -- last_evaluated_at: null in response
 """
 
 import os
 
+os.environ.setdefault("API_TOKEN", "test-token")
+
 import pytest
+from fastapi import FastAPI, Request
 from fastapi.testclient import TestClient
+from peewee import SqliteDatabase
+
+from app.db_engine import (
+    BattingSeasonStats,
+    Card,
+    Cardset,
+    Decision,
+    Event,
+    MlbPlayer,
+    Pack,
+    PackType,
+    PitchingSeasonStats,
+    Player,
+    ProcessedGame,
+    Rarity,
+    RefractorCardState,
+    RefractorCosmetic,
+    RefractorTierBoost,
+    RefractorTrack,
+    Roster,
+    RosterSlot,
+    ScoutClaim,
+    ScoutOpportunity,
+    StratGame,
+    StratPlay,
+    Team,
+)
 
 POSTGRES_HOST = os.environ.get("POSTGRES_HOST")
 _skip_no_pg = pytest.mark.skipif(
@@ -607,3 +642,397 @@ def test_auth_required(client, seeded_data):
 
     resp_card = client.get(f"/api/v2/refractor/cards/{card_id}")
     assert resp_card.status_code == 401
+
+
+# ===========================================================================
+# SQLite-backed tests for T2-4, T2-5, T2-6, T3-6
+#
+# These tests use the same shared-memory SQLite pattern as test_postgame_refractor
+# so they run without a PostgreSQL connection.  They test the
+# GET /api/v2/teams/{team_id}/refractors, POST /refractor/cards/{card_id}/evaluate,
+# and GET /api/v2/refractor/cards/{card_id} endpoints in isolation.
+# ===========================================================================
+
+_state_api_db = SqliteDatabase(
+    "file:stateapitest?mode=memory&cache=shared",
+    uri=True,
+    pragmas={"foreign_keys": 1},
+)
+
+_STATE_API_MODELS = [
+    Rarity,
+    Event,
+    Cardset,
+    MlbPlayer,
+    Player,
+    Team,
+    PackType,
+    Pack,
+    Card,
+    Roster,
+    RosterSlot,
+    StratGame,
+    StratPlay,
+    Decision,
+    ScoutOpportunity,
+    ScoutClaim,
+    BattingSeasonStats,
+    PitchingSeasonStats,
+    ProcessedGame,
+    RefractorTrack,
+    RefractorCardState,
+    RefractorTierBoost,
+    RefractorCosmetic,
+]
+
+
+@pytest.fixture(autouse=False)
+def setup_state_api_db():
+    """Bind state-api test models to shared-memory SQLite and create tables.
+
+    Not autouse — only the SQLite-backed tests in this section depend on it.
+    """
+    _state_api_db.bind(_STATE_API_MODELS)
+    _state_api_db.connect(reuse_if_open=True)
+    _state_api_db.create_tables(_STATE_API_MODELS)
+    yield _state_api_db
+    _state_api_db.drop_tables(list(reversed(_STATE_API_MODELS)), safe=True)
+
+
+def _build_state_api_app() -> FastAPI:
+    """Minimal FastAPI app with teams + refractor routers for SQLite tests."""
+    from app.routers_v2.teams import router as teams_router
+    from app.routers_v2.refractor import router as refractor_router
+
+    app = FastAPI()
+
+    @app.middleware("http")
+    async def db_middleware(request: Request, call_next):
+        _state_api_db.connect(reuse_if_open=True)
+        return await call_next(request)
+
+    app.include_router(teams_router)
+    app.include_router(refractor_router)
+    return app
+
+
+@pytest.fixture
+def state_api_client(setup_state_api_db):
+    """FastAPI TestClient for the SQLite-backed state API tests."""
+    with TestClient(_build_state_api_app()) as c:
+        yield c
+
+
+# ---------------------------------------------------------------------------
+# Helper factories for SQLite-backed tests
+# ---------------------------------------------------------------------------
+
+
+def _sa_make_rarity():
+    r, _ = Rarity.get_or_create(
+        value=50, name="SA_Common", defaults={"color": "#aabbcc"}
+    )
+    return r
+
+
+def _sa_make_cardset():
+    cs, _ = Cardset.get_or_create(
+        name="SA Test Set",
+        defaults={"description": "state api test", "total_cards": 10},
+    )
+    return cs
+
+
+def _sa_make_team(abbrev: str, gmid: int) -> Team:
+    return Team.create(
+        abbrev=abbrev,
+        sname=abbrev,
+        lname=f"Team {abbrev}",
+        gmid=gmid,
+        gmname=f"gm_{abbrev.lower()}",
+        gsheet="https://docs.google.com/sa_test",
+        wallet=500,
+        team_value=1000,
+        collection_value=1000,
+        season=11,
+        is_ai=False,
+    )
+
+
+def _sa_make_player(name: str, pos: str = "1B") -> Player:
+    return Player.create(
+        p_name=name,
+        rarity=_sa_make_rarity(),
+        cardset=_sa_make_cardset(),
+        set_num=1,
+        pos_1=pos,
+        image="https://example.com/sa.png",
+        mlbclub="TST",
+        franchise="TST",
+        description=f"sa test: {name}",
+    )
+
+
+def _sa_make_track(card_type: str = "batter") -> RefractorTrack:
+    track, _ = RefractorTrack.get_or_create(
+        name=f"SA {card_type} Track",
+        defaults=dict(
+            card_type=card_type,
+            formula="pa + tb * 2",
+            t1_threshold=37,
+            t2_threshold=149,
+            t3_threshold=448,
+            t4_threshold=896,
+        ),
+    )
+    return track
+
+
+def _sa_make_pack(team: Team) -> Pack:
+    pt, _ = PackType.get_or_create(
+        name="SA PackType",
+        defaults={"cost": 100, "card_count": 5, "description": "sa test pack type"},
+    )
+    return Pack.create(team=team, pack_type=pt)
+
+
+def _sa_make_card(player: Player, team: Team) -> Card:
+    pack = _sa_make_pack(team)
+    return Card.create(player=player, team=team, pack=pack, value=0)
+
+
+def _sa_make_state(player, team, track, current_tier=0, current_value=0.0):
+    return RefractorCardState.create(
+        player=player,
+        team=team,
+        track=track,
+        current_tier=current_tier,
+        current_value=current_value,
+        fully_evolved=False,
+        last_evaluated_at=None,
+    )
+
+
+# ---------------------------------------------------------------------------
+# T2-4: GET /teams/{valid_team_id}/refractors — team exists, zero states
+# ---------------------------------------------------------------------------
+
+
+def test_team_refractors_zero_states(setup_state_api_db, state_api_client):
+    """GET /teams/{id}/refractors for a team with no RefractorCardState rows.
+
+    What: Create a Team with no associated RefractorCardState rows.
+    Call the endpoint and verify the response is {"count": 0, "items": []}.
+
+    Why: The endpoint uses a JOIN from RefractorCardState to RefractorTrack
+    filtered by team_id.  If the WHERE produces no rows, the correct response
+    is an empty list with count=0, not a 404 or 500.  This is the base-case
+    for a newly-created team that hasn't opened any packs yet.
+    """
+    team = _sa_make_team("SA4", gmid=30041)
+
+    resp = state_api_client.get(
+        f"/api/v2/teams/{team.id}/refractors", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["count"] == 0
+    assert data["items"] == []
+
+
+# ---------------------------------------------------------------------------
+# T2-5: GET /teams/99999/refractors — non-existent team
+# ---------------------------------------------------------------------------
+
+
+def test_team_refractors_nonexistent_team(setup_state_api_db, state_api_client):
+    """GET /teams/99999/refractors where team_id 99999 does not exist.
+
+    What: Call the endpoint with a team_id that has no Team row and no
+    RefractorCardState rows.
+
+    Why: Documents the confirmed behaviour: 200 with {"count": 0, "items": []}.
+    The endpoint queries RefractorCardState WHERE team_id=99999.  Because no
+    state rows reference that team, the result is an empty list.  The endpoint
+    does NOT validate that the Team row itself exists, so it does not return 404.
+
+    If the implementation is ever changed to validate team existence and return
+    404 for missing teams, this test will fail and surface the contract change.
+    """
+    resp = state_api_client.get("/api/v2/teams/99999/refractors", headers=AUTH_HEADER)
+    assert resp.status_code == 200
+    data = resp.json()
+    # No state rows reference team 99999 — empty list with count=0
+    assert data["count"] == 0
+    assert data["items"] == []
+
+
+# ---------------------------------------------------------------------------
+# T2-6: POST /refractor/cards/{card_id}/evaluate — zero season stats → T0
+# ---------------------------------------------------------------------------
+
+
+def test_evaluate_card_zero_stats_stays_t0(setup_state_api_db, state_api_client):
+    """POST /cards/{card_id}/evaluate for a card with no season stats stays at T0.
+
+    What: Create a Player, Team, Card, and RefractorCardState.  Do NOT create
+    any BattingSeasonStats rows for this player+team.  Call the evaluate
+    endpoint.  The response must show current_tier=0 and current_value=0.0.
+
+    Why: A player who has never appeared in a game has zero career stats.
+    The evaluator sums all stats rows (none) -> all-zero totals ->
+    compute_batter_value(zeros) = 0.0 -> tier_from_value(0.0) = T0.
+    Verifies the happy-path zero-stats case returns a valid response rather
+    than crashing on an empty aggregation.
+    """
+    team = _sa_make_team("SA6", gmid=30061)
+    player = _sa_make_player("SA6 Batter", pos="1B")
+    track = _sa_make_track("batter")
+    card = _sa_make_card(player, team)
+    _sa_make_state(player, team, track, current_tier=0, current_value=0.0)
+
+    # No BattingSeasonStats rows — intentionally empty
+
+    resp = state_api_client.post(
+        f"/api/v2/refractor/cards/{card.id}/evaluate", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["current_tier"] == 0
+    assert data["current_value"] == 0.0
+
+
+# ---------------------------------------------------------------------------
+# T3-6: GET /refractor/cards/{card_id} — last_evaluated_at is None
+# ---------------------------------------------------------------------------
+
+
+def test_get_card_state_last_evaluated_at_null(setup_state_api_db, state_api_client):
+    """GET /refractor/cards/{card_id} returns last_evaluated_at: null for un-evaluated card.
+
+    What: Create a Player, Team, Card, and RefractorCardState where
+    last_evaluated_at is explicitly None (the state was initialised via a
+    pack-open hook but has never been through the evaluator).  Call
+    GET /api/v2/refractor/cards/{card_id} and verify:
+      - The response status is 200 (not a 500 crash from calling .isoformat() on None).
+      - The response body contains the key 'last_evaluated_at'.
+      - The value of 'last_evaluated_at' is JSON null (Python None after parsing).
+
+    Why: The _build_card_state_response helper serialises last_evaluated_at
+    with `state.last_evaluated_at.isoformat() if state.last_evaluated_at else None`.
+    This test confirms that the None branch is exercised and the field is always
+    present in the response envelope.  Callers must be able to distinguish
+    "never evaluated" (null) from a real ISO-8601 timestamp, and the API must
+    not crash on a newly-created card that has not yet been evaluated.
+    """
+    team = _sa_make_team("SA_T36", gmid=30360)
+    player = _sa_make_player("T36 Batter", pos="1B")
+    track = _sa_make_track("batter")
+    card = _sa_make_card(player, team)
+
+    # Create state with last_evaluated_at=None — simulates a freshly initialised
+    # card that has not yet been through the evaluator
+    RefractorCardState.create(
+        player=player,
+        team=team,
+        track=track,
+        current_tier=0,
+        current_value=0.0,
+        fully_evolved=False,
+        last_evaluated_at=None,
+    )
+
+    resp = state_api_client.get(
+        f"/api/v2/refractor/cards/{card.id}", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200, f"Expected 200, got {resp.status_code}: {resp.text}"
+    data = resp.json()
+
+    # 'last_evaluated_at' must be present as a key even when the value is null
+    assert "last_evaluated_at" in data, (
+        "Response is missing the 'last_evaluated_at' key"
+    )
+    assert data["last_evaluated_at"] is None, (
+        f"Expected last_evaluated_at=null for un-evaluated card, "
+        f"got {data['last_evaluated_at']!r}"
+    )
+
+
+# ---------------------------------------------------------------------------
+# T3-8: GET /refractor/cards?team_id=X&evaluated_only=false includes un-evaluated
+# ---------------------------------------------------------------------------
+
+
+def test_list_cards_evaluated_only_false_includes_unevaluated(
+    setup_state_api_db, state_api_client
+):
+    """GET /refractor/cards?team_id=X&evaluated_only=false returns cards with last_evaluated_at=NULL.
+
+    What: Create two RefractorCardState rows for the same team — one with
+    last_evaluated_at=None (never evaluated) and one with last_evaluated_at set
+    to a timestamp (has been evaluated).  Call the endpoint twice:
+      1. evaluated_only=true (default) — only the evaluated card appears.
+      2. evaluated_only=false          — both cards appear.
+
+    Why: The default evaluated_only=True filter uses
+    `last_evaluated_at IS NOT NULL` to exclude placeholder rows created at
+    pack-open time but never run through the evaluator.  At team scale (2753
+    rows, ~14 evaluated) this filter is critical for bot performance.
+    This test verifies the opt-out path (evaluated_only=false) exposes all rows,
+    which is needed for admin/pipeline use cases.
+    """
+    from datetime import datetime, timezone
+
+    team = _sa_make_team("SA_T38", gmid=30380)
+    track = _sa_make_track("batter")
+
+    # Card 1: never evaluated — last_evaluated_at is NULL
+    player_unevaluated = _sa_make_player("T38 Unevaluated", pos="1B")
+    card_unevaluated = _sa_make_card(player_unevaluated, team)  # noqa: F841
+    RefractorCardState.create(
+        player=player_unevaluated,
+        team=team,
+        track=track,
+        current_tier=0,
+        current_value=0.0,
+        fully_evolved=False,
+        last_evaluated_at=None,
+    )
+
+    # Card 2: has been evaluated — last_evaluated_at is a timestamp
+    player_evaluated = _sa_make_player("T38 Evaluated", pos="RF")
+    card_evaluated = _sa_make_card(player_evaluated, team)  # noqa: F841
+    RefractorCardState.create(
+        player=player_evaluated,
+        team=team,
+        track=track,
+        current_tier=1,
+        current_value=5.0,
+        fully_evolved=False,
+        last_evaluated_at=datetime(2025, 4, 1, tzinfo=timezone.utc),
+    )
+
+    # Default (evaluated_only=true) — only the evaluated card should appear
+    resp_default = state_api_client.get(
+        f"/api/v2/refractor/cards?team_id={team.id}", headers=AUTH_HEADER
+    )
+    assert resp_default.status_code == 200
+    data_default = resp_default.json()
+    assert data_default["count"] == 1, (
+        f"evaluated_only=true should return 1 card, got {data_default['count']}"
+    )
+    assert data_default["items"][0]["player_name"] == "T38 Evaluated"
+
+    # evaluated_only=false — both cards should appear
+    resp_all = state_api_client.get(
+        f"/api/v2/refractor/cards?team_id={team.id}&evaluated_only=false",
+        headers=AUTH_HEADER,
+    )
+    assert resp_all.status_code == 200
+    data_all = resp_all.json()
+    assert data_all["count"] == 2, (
+        f"evaluated_only=false should return 2 cards, got {data_all['count']}"
+    )
+    names = {item["player_name"] for item in data_all["items"]}
+    assert "T38 Unevaluated" in names
+    assert "T38 Evaluated" in names

tests/test_refractor_track_api.py

@@ -11,12 +11,47 @@ Tests auto-skip when POSTGRES_HOST is not set.
 Test data is inserted via psycopg2 before the test module runs and deleted
 afterwards so the tests are repeatable.  ON CONFLICT keeps the table clean
 even if a previous run did not complete teardown.
+
+Tier 3 tests (T3-1) in this file use a SQLite-backed TestClient so they run
+without a PostgreSQL connection.  They test the card_type filter edge cases:
+an unrecognised card_type string and an empty string should both return an
+empty list (200 with count=0) rather than an error.
 """
 
 import os
 
 import pytest
+from fastapi import FastAPI, Request
 from fastapi.testclient import TestClient
+from peewee import SqliteDatabase
+
+os.environ.setdefault("API_TOKEN", "test-token")
+
+from app.db_engine import (  # noqa: E402
+    BattingSeasonStats,
+    Card,
+    Cardset,
+    Decision,
+    Event,
+    MlbPlayer,
+    Pack,
+    PackType,
+    PitchingSeasonStats,
+    Player,
+    ProcessedGame,
+    Rarity,
+    RefractorCardState,
+    RefractorCosmetic,
+    RefractorTierBoost,
+    RefractorTrack,
+    Roster,
+    RosterSlot,
+    ScoutClaim,
+    ScoutOpportunity,
+    StratGame,
+    StratPlay,
+    Team,
+)
 
 POSTGRES_HOST = os.environ.get("POSTGRES_HOST")
 _skip_no_pg = pytest.mark.skipif(
@@ -130,3 +165,172 @@ def test_auth_required(client, seeded_tracks):
     track_id = seeded_tracks[0]
     resp_single = client.get(f"/api/v2/refractor/tracks/{track_id}")
     assert resp_single.status_code == 401
+
+
+# ===========================================================================
+# SQLite-backed tests for T3-1: invalid card_type query parameter
+#
+# These tests run without a PostgreSQL connection.  They verify that the
+# card_type filter on GET /api/v2/refractor/tracks handles values that match
+# no known track (an unrecognised string, an empty string) gracefully: the
+# endpoint must return 200 with {"count": 0, "items": []}, not a 4xx/5xx.
+# ===========================================================================
+
+_track_api_db = SqliteDatabase(
+    "file:trackapitest?mode=memory&cache=shared",
+    uri=True,
+    pragmas={"foreign_keys": 1},
+)
+
+_TRACK_API_MODELS = [
+    Rarity,
+    Event,
+    Cardset,
+    MlbPlayer,
+    Player,
+    Team,
+    PackType,
+    Pack,
+    Card,
+    Roster,
+    RosterSlot,
+    StratGame,
+    StratPlay,
+    Decision,
+    ScoutOpportunity,
+    ScoutClaim,
+    BattingSeasonStats,
+    PitchingSeasonStats,
+    ProcessedGame,
+    RefractorTrack,
+    RefractorCardState,
+    RefractorTierBoost,
+    RefractorCosmetic,
+]
+
+
+@pytest.fixture(autouse=False)
+def setup_track_api_db():
+    """Bind track-API test models to shared-memory SQLite and create tables.
+
+    Inserts exactly two tracks (batter, sp) so the filter tests have a
+    non-empty table to query against — confirming that the WHERE predicate
+    excludes them rather than the table simply being empty.
+    """
+    _track_api_db.bind(_TRACK_API_MODELS)
+    _track_api_db.connect(reuse_if_open=True)
+    _track_api_db.create_tables(_TRACK_API_MODELS)
+
+    # Seed two real tracks so the table is not empty
+    RefractorTrack.get_or_create(
+        name="T3-1 Batter Track",
+        defaults=dict(
+            card_type="batter",
+            formula="pa + tb * 2",
+            t1_threshold=37,
+            t2_threshold=149,
+            t3_threshold=448,
+            t4_threshold=896,
+        ),
+    )
+    RefractorTrack.get_or_create(
+        name="T3-1 SP Track",
+        defaults=dict(
+            card_type="sp",
+            formula="ip + k",
+            t1_threshold=10,
+            t2_threshold=40,
+            t3_threshold=120,
+            t4_threshold=240,
+        ),
+    )
+
+    yield _track_api_db
+    _track_api_db.drop_tables(list(reversed(_TRACK_API_MODELS)), safe=True)
+
+
+def _build_track_api_app() -> FastAPI:
+    """Minimal FastAPI app containing only the refractor router for T3-1 tests."""
+    from app.routers_v2.refractor import router as refractor_router
+
+    app = FastAPI()
+
+    @app.middleware("http")
+    async def db_middleware(request: Request, call_next):
+        _track_api_db.connect(reuse_if_open=True)
+        return await call_next(request)
+
+    app.include_router(refractor_router)
+    return app
+
+
+@pytest.fixture
+def track_api_client(setup_track_api_db):
+    """FastAPI TestClient for the SQLite-backed T3-1 track filter tests."""
+    with TestClient(_build_track_api_app()) as c:
+        yield c
+
+
+# ---------------------------------------------------------------------------
+# T3-1a: card_type=foo (unrecognised value) returns empty list
+# ---------------------------------------------------------------------------
+
+
+def test_invalid_card_type_returns_empty_list(setup_track_api_db, track_api_client):
+    """GET /tracks?card_type=foo returns 200 with count=0, not a 4xx/5xx.
+
+    What: Query the track list with a card_type value ('foo') that matches
+    no row in refractor_track.  The table contains batter and sp tracks so
+    the result must be an empty list rather than a full list (which would
+    indicate the filter was ignored).
+
+    Why: The endpoint applies `WHERE card_type == card_type` when the
+    parameter is not None.  An unrecognised value is a valid no-match query
+    — the contract is an empty list, not a validation error.  Returning
+    a 422 Unprocessable Entity or 500 here would break clients that probe
+    for tracks by card type before knowing which types are registered.
+    """
+    resp = track_api_client.get(
+        "/api/v2/refractor/tracks?card_type=foo", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["count"] == 0, (
+        f"Expected count=0 for unknown card_type 'foo', got {data['count']}"
+    )
+    assert data["items"] == [], (
+        f"Expected empty items list for unknown card_type 'foo', got {data['items']}"
+    )
+
+
+# ---------------------------------------------------------------------------
+# T3-1b: card_type= (empty string) returns empty list
+# ---------------------------------------------------------------------------
+
+
+def test_empty_string_card_type_returns_empty_list(
+    setup_track_api_db, track_api_client
+):
+    """GET /tracks?card_type= (empty string) returns 200 with count=0.
+
+    What: Pass an empty string as the card_type query parameter.  No track
+    has card_type='' so the response must be an empty list with count=0.
+
+    Why: An empty string is not None — FastAPI will pass it through as ''
+    rather than treating it as an absent parameter.  The WHERE predicate
+    `card_type == ''` produces no matches, which is the correct silent
+    no-results behaviour.  This guards against regressions where an empty
+    string might be mishandled as a None/absent value and accidentally return
+    all tracks, or raise a server error.
+    """
+    resp = track_api_client.get(
+        "/api/v2/refractor/tracks?card_type=", headers=AUTH_HEADER
+    )
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["count"] == 0, (
+        f"Expected count=0 for empty card_type string, got {data['count']}"
+    )
+    assert data["items"] == [], (
+        f"Expected empty items list for empty card_type string, got {data['items']}"
+    )