perf: parallelize independent API calls (#90)

Closes #90

Replace sequential awaits with asyncio.gather() in all locations identified
in the issue:

- commands/gameplay/scorebug.py: parallel team lookups in publish_scorecard
  and scorebug commands; also fix missing await on async scorecard_tracker calls
- commands/league/submit_scorecard.py: parallel away/home team lookups
- tasks/live_scorebug_tracker.py: parallel team lookups inside per-scorecard
  loop (compounds across multiple active games); fix missing await on
  get_all_scorecards
- commands/injuries/management.py: parallel get_current_state() +
  search_players() in injury_roll, injury_set_new, and injury_clear
- services/trade_builder.py: parallel per-participant roster validation in
  validate_trade()

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

commands/gameplay/scorebug.py

@@ -4,6 +4,7 @@ Scorebug Commands
 Implements commands for publishing and displaying live game scorebugs from Google Sheets scorecards.
 """
 
+import asyncio
 import discord
 from discord.ext import commands
 from discord import app_commands
@@ -73,12 +74,18 @@ class ScorebugCommands(commands.Cog):
                 return
 
             # Get team data for display
-            away_team = None
+            away_team, home_team = await asyncio.gather(
-            home_team = None
+                (
-            if scorebug_data.away_team_id:
+                    team_service.get_team(scorebug_data.away_team_id)
-                away_team = await team_service.get_team(scorebug_data.away_team_id)
+                    if scorebug_data.away_team_id
-            if scorebug_data.home_team_id:
+                    else asyncio.sleep(0)
-                home_team = await team_service.get_team(scorebug_data.home_team_id)
+                ),
+                (
+                    team_service.get_team(scorebug_data.home_team_id)
+                    if scorebug_data.home_team_id
+                    else asyncio.sleep(0)
+                ),
+            )
 
             # Format scorecard link
             away_abbrev = away_team.abbrev if away_team else "AWAY"
@@ -86,7 +93,7 @@ class ScorebugCommands(commands.Cog):
             scorecard_link = f"[{away_abbrev} @ {home_abbrev}]({url})"
 
             # Store the scorecard in the tracker
-            self.scorecard_tracker.publish_scorecard(
+            await self.scorecard_tracker.publish_scorecard(
                 text_channel_id=interaction.channel_id,  # type: ignore
                 sheet_url=url,
                 publisher_id=interaction.user.id,
@@ -157,7 +164,7 @@ class ScorebugCommands(commands.Cog):
         await interaction.response.defer(ephemeral=True)
 
         # Check if a scorecard is published in this channel
-        sheet_url = self.scorecard_tracker.get_scorecard(interaction.channel_id)  # type: ignore
+        sheet_url = await self.scorecard_tracker.get_scorecard(interaction.channel_id)  # type: ignore
 
         if not sheet_url:
             embed = EmbedTemplate.error(
@@ -179,12 +186,18 @@ class ScorebugCommands(commands.Cog):
             )
 
             # Get team data
-            away_team = None
+            away_team, home_team = await asyncio.gather(
-            home_team = None
+                (
-            if scorebug_data.away_team_id:
+                    team_service.get_team(scorebug_data.away_team_id)
-                away_team = await team_service.get_team(scorebug_data.away_team_id)
+                    if scorebug_data.away_team_id
-            if scorebug_data.home_team_id:
+                    else asyncio.sleep(0)
-                home_team = await team_service.get_team(scorebug_data.home_team_id)
+                ),
+                (
+                    team_service.get_team(scorebug_data.home_team_id)
+                    if scorebug_data.home_team_id
+                    else asyncio.sleep(0)
+                ),
+            )
 
             # Create scorebug embed using shared utility
             embed = create_scorebug_embed(
@@ -194,7 +207,7 @@ class ScorebugCommands(commands.Cog):
             await interaction.edit_original_response(content=None, embed=embed)
 
             # Update timestamp in tracker
-            self.scorecard_tracker.update_timestamp(interaction.channel_id)  # type: ignore
+            await self.scorecard_tracker.update_timestamp(interaction.channel_id)  # type: ignore
 
         except SheetsException as e:
             embed = EmbedTemplate.error(

commands/injuries/management.py

@@ -11,6 +11,7 @@ The injury rating format (#p##) encodes both games played and rating:
 - Remaining: Injury rating (p70, p65, p60, p50, p40, p30, p20)
 """
 
+import asyncio
 import math
 import random
 import discord
@@ -114,16 +115,14 @@ class InjuryGroup(app_commands.Group):
         """Roll for injury using 3d6 dice and injury tables."""
         await interaction.response.defer()
 
-        # Get current season
+        # Get current season and search for player in parallel
-        current = await league_service.get_current_state()
+        current, players = await asyncio.gather(
+            league_service.get_current_state(),
+            player_service.search_players(player_name, limit=10),
+        )
         if not current:
             raise BotException("Failed to get current season information")
 
-        # Search for player using the search endpoint (more reliable than name param)
-        players = await player_service.search_players(
-            player_name, limit=10, season=current.season
-        )
-
         if not players:
             embed = EmbedTemplate.error(
                 title="Player Not Found",
@@ -530,16 +529,14 @@ class InjuryGroup(app_commands.Group):
             await interaction.followup.send(embed=embed, ephemeral=True)
             return
 
-        # Get current season
+        # Get current season and search for player in parallel
-        current = await league_service.get_current_state()
+        current, players = await asyncio.gather(
+            league_service.get_current_state(),
+            player_service.search_players(player_name, limit=10),
+        )
         if not current:
             raise BotException("Failed to get current season information")
 
-        # Search for player using the search endpoint (more reliable than name param)
-        players = await player_service.search_players(
-            player_name, limit=10, season=current.season
-        )
-
         if not players:
             embed = EmbedTemplate.error(
                 title="Player Not Found",
@@ -717,16 +714,14 @@ class InjuryGroup(app_commands.Group):
 
         await interaction.response.defer()
 
-        # Get current season
+        # Get current season and search for player in parallel
-        current = await league_service.get_current_state()
+        current, players = await asyncio.gather(
+            league_service.get_current_state(),
+            player_service.search_players(player_name, limit=10),
+        )
         if not current:
             raise BotException("Failed to get current season information")
 
-        # Search for player using the search endpoint (more reliable than name param)
-        players = await player_service.search_players(
-            player_name, limit=10, season=current.season
-        )
-
         if not players:
             embed = EmbedTemplate.error(
                 title="Player Not Found",

commands/league/submit_scorecard.py

@@ -5,6 +5,7 @@ Implements the /submit-scorecard command for submitting Google Sheets
 scorecards with play-by-play data, pitching decisions, and game results.
 """
 
+import asyncio
 from typing import Optional, List
 
 import discord
@@ -107,11 +108,13 @@ class SubmitScorecardCommands(commands.Cog):
                 content="🔍 Looking up teams and managers..."
             )
 
-            away_team = await team_service.get_team_by_abbrev(
+            away_team, home_team = await asyncio.gather(
+                team_service.get_team_by_abbrev(
                     setup_data["away_team_abbrev"], current.season
-            )
+                ),
-            home_team = await team_service.get_team_by_abbrev(
+                team_service.get_team_by_abbrev(
                     setup_data["home_team_abbrev"], current.season
+                ),
             )
 
             if not away_team or not home_team:
@@ -235,9 +238,13 @@ class SubmitScorecardCommands(commands.Cog):
                 decision["game_num"] = setup_data["game_num"]
 
             # Validate WP and LP exist and fetch Player objects
-            wp, lp, sv, holders, _blown_saves = (
+            (
-                await decision_service.find_winning_losing_pitchers(decisions_data)
+                wp,
-            )
+                lp,
+                sv,
+                holders,
+                _blown_saves,
+            ) = await decision_service.find_winning_losing_pitchers(decisions_data)
 
             if wp is None or lp is None:
                 await interaction.edit_original_response(

services/trade_builder.py

@@ -4,6 +4,7 @@ Trade Builder Service
 Extends the TransactionBuilder to support multi-team trades and player exchanges.
 """
 
+import asyncio
 import logging
 from typing import Dict, List, Optional, Set
 from datetime import datetime, timezone
@@ -524,14 +525,22 @@ class TradeBuilder:
 
         # Validate each team's roster after the trade
         for participant in self.trade.participants:
-            team_id = participant.team.id
+            result.team_abbrevs[participant.team.id] = participant.team.abbrev
-            result.team_abbrevs[team_id] = participant.team.abbrev
-            if team_id in self._team_builders:
-                builder = self._team_builders[team_id]
-                roster_validation = await builder.validate_transaction(next_week)
 
+        team_ids_to_validate = [
+            participant.team.id
+            for participant in self.trade.participants
+            if participant.team.id in self._team_builders
+        ]
+        if team_ids_to_validate:
+            validations = await asyncio.gather(
+                *[
+                    self._team_builders[tid].validate_transaction(next_week)
+                    for tid in team_ids_to_validate
+                ]
+            )
+            for team_id, roster_validation in zip(team_ids_to_validate, validations):
                 result.participant_validations[team_id] = roster_validation
-
                 if not roster_validation.is_legal:
                     result.is_legal = False
 

tasks/live_scorebug_tracker.py

@@ -95,7 +95,7 @@ class LiveScorebugTracker:
             # Don't return - still update voice channels
         else:
             # Get all published scorecards
-            all_scorecards = self.scorecard_tracker.get_all_scorecards()
+            all_scorecards = await self.scorecard_tracker.get_all_scorecards()
 
             if not all_scorecards:
                 # No active scorebugs - clear the channel and hide it
@@ -119,11 +119,9 @@ class LiveScorebugTracker:
                     # Only include active (non-final) games
                     if scorebug_data.is_active:
                         # Get team data
-                        away_team = await team_service.get_team(
+                        away_team, home_team = await asyncio.gather(
-                            scorebug_data.away_team_id
+                            team_service.get_team(scorebug_data.away_team_id),
-                        )
+                            team_service.get_team(scorebug_data.home_team_id),
-                        home_team = await team_service.get_team(
-                            scorebug_data.home_team_id
                         )
 
                         if away_team is None or home_team is None: