Relicense project under GPL-3.0-or-later

Replaces the previous MIT license with GPL-3.0-or-later. Adds the full
GPL-3.0 license text at LICENSE, updates pyproject.toml metadata and
classifier, updates the README, and adds SPDX-License-Identifier headers
to all first-party server Python and client JavaScript sources.
Third-party anime.min.js is left untouched.

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

server/ai.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """AI personalities for CPU players in Golf."""
 
 import logging

server/auth.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Authentication and user management for Golf game.
 

server/config.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Centralized configuration for Golf game server.
 

server/constants.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Card value constants for 6-Card Golf.
 

server/game.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Game logic for 6-Card Golf.
 

server/game_analyzer.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Game Analyzer for 6-Card Golf AI decisions.
 

server/handlers.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """WebSocket message handlers for the Golf card game.
 
 Each handler corresponds to a single message type from the client.

server/logging_config.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Structured logging configuration for Golf game server.
 

server/main.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """FastAPI WebSocket server for Golf card game."""
 
 import asyncio

server/middleware/__init__.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Middleware components for Golf game server.
 

server/middleware/ratelimit.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Rate limiting middleware for FastAPI.
 

server/middleware/request_id.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Request ID middleware for request tracing.
 

server/middleware/security.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Security headers middleware for FastAPI.
 

server/models/__init__.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """Models package for Golf game V2."""
 
 from .events import EventType, GameEvent

server/models/events.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Event definitions for Golf game event sourcing.
 

server/models/game_state.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Game state rebuilder for event sourcing.
 

server/models/user.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 User-related models for Golf game authentication.
 

server/room.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Room management for multiplayer Golf games.
 

server/routers/__init__.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """Routers package for Golf game API."""
 
 from .auth import router as auth_router

server/routers/admin.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Admin API router for Golf game V2.
 

server/routers/auth.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Authentication API router for Golf game V2.
 

server/routers/health.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Health check endpoints for production deployment.
 

server/routers/replay.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Replay API router for Golf game.
 

server/routers/stats.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Stats and Leaderboards API router for Golf game.
 

server/score_analysis.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Score distribution analysis for Golf AI.
 

server/scripts/create_admin.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Create an admin user for the Golf game.
 

server/services/__init__.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """Services package for Golf game V2 business logic."""
 
 from .recovery_service import RecoveryService, RecoveryResult

server/services/admin_service.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Admin service for Golf game.
 

server/services/auth_service.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Authentication service for Golf game.
 

server/services/email_service.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Email service for Golf game authentication.
 

server/services/game_logger.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 PostgreSQL-backed game logging for AI decision analysis.
 

server/services/matchmaking.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Matchmaking service for public skill-based games.
 

server/services/ratelimit.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Redis-based rate limiter service.
 

server/services/rating_service.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Glicko-2 rating service for Golf game matchmaking.
 

server/services/recovery_service.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Game recovery service for rebuilding active games from event store.
 

server/services/replay_service.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Replay service for Golf game.
 

server/services/spectator.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Spectator manager for Golf game.
 

server/services/stats_service.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Stats service for Golf game leaderboards and achievements.
 

server/simulate.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Golf AI Simulation Runner
 

server/stores/__init__.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """Stores package for Golf game V2 persistence."""
 
 from .event_store import EventStore, ConcurrencyError

server/stores/event_store.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 PostgreSQL-backed event store for Golf game.
 

server/stores/pubsub.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Redis pub/sub for cross-server game events.
 

server/stores/state_cache.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Redis-backed live game state cache.
 

server/stores/user_store.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 PostgreSQL-backed user store for Golf game authentication.
 

server/test_ai_decisions.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Test suite for AI decision sub-functions extracted from ai.py.
 

server/test_analyzer.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Tests for the GameAnalyzer decision evaluation logic.
 

server/test_auth.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Tests for the authentication system.
 

server/test_game.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Test suite for 6-Card Golf game rules.
 

server/test_handlers.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Test suite for WebSocket message handlers.
 

server/test_house_rules.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 House Rules Testing Suite
 

server/test_maya_bug.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Test for the original Maya bug:
 

server/test_room.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Test suite for Room and RoomManager CRUD operations.
 

server/test_v3_features.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Test suite for V3 features in 6-Card Golf.
 

server/tests/__init__.py

@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """Tests package for Golf game."""

server/tests/test_event_replay.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Tests for event sourcing and state replay.
 

server/tests/test_persistence.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Tests for V2 Persistence & Recovery components.
 

server/tests/test_replay.py

@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 """
 Tests for the replay service.