store: Fix: Peewee boolean filter always-truthy column reference

graph/fixes/fix-peewee-boolean-filter-always-truthy-column-reference-cd43d0.md

@@ -0,0 +1,45 @@
+---
+id: cd43d051-d2e8-436e-b964-f9260739cc15
+type: fix
+title: "Fix: Peewee boolean filter always-truthy column reference"
+tags: [paper-dynasty-database, peewee, python, fastapi, boolean-filter, orm, bug]
+importance: 0.6
+confidence: 0.8
+created: "2026-03-03T21:32:52.436667+00:00"
+updated: "2026-03-03T21:32:52.436667+00:00"
+---
+
+## Problem
+
+`get_teams` endpoint in `app/routers_v2/teams.py` accepted `is_ai: bool | None` query param but always filtered for AI teams regardless of value.
+
+## Root Cause
+
+```python
+if is_ai is not None:
+    all_teams = all_teams.where(Team.is_ai)  # always truthy — column reference
+```
+
+`Team.is_ai` in a Peewee `.where()` call is a column expression that evaluates as truthy, not as `== True`. Passing `is_ai=False` still filtered for AI teams.
+
+## Solution
+
+Use explicit boolean comparison, same as adjacent `has_guide` filter:
+
+```python
+if is_ai is not None:
+    if not is_ai:
+        all_teams = all_teams.where(Team.is_ai == False)
+    else:
+        all_teams = all_teams.where(Team.is_ai == True)
+```
+
+This is also PostgreSQL-compatible (ORM generates proper `= false` / `= true` SQL).
+
+## Files Changed
+
+- `app/routers_v2/teams.py` lines 152–156
+
+## Pattern
+
+In Peewee ORM, always use `Model.bool_field == False` / `== True` for boolean filters. Never use bare `Model.bool_field` inside `.where()` to represent `True` — it works by accident but breaks for `False`.