fix: deep GPU integration, fix all ruff/mypy issues, add .dockerignore

- Integrate GPU scoring inline into reasoning/multi_path.py (auto-uses GPU when available)
- Integrate GPU deduplication into multi_agent/consensus_engine.py
- Add semantic_search() method to memory/semantic_graph.py with GPU acceleration
- Integrate GPU training into self_improvement/training.py AutoTrainer
- Fix all 758 ruff lint issues (whitespace, import sorting, unused imports, ambiguous vars, undefined names)
- Fix all 40 mypy type errors across the codebase (no-any-return, union-attr, arg-type, etc.)
- Fix deprecated ruff config keys (select/ignore -> [tool.ruff.lint])
- Add .dockerignore to exclude .venv/, tests/, docs/ from Docker builds
- Add type hints and docstrings to verification/outcome.py
- Fix E402 import ordering in witness_agent.py
- Fix F821 undefined names in vector_pgvector.py and native.py
- Fix E741 ambiguous variable names in reflective.py and recommender.py

All 276 tests pass. 0 ruff errors. 0 mypy errors.

Co-Authored-By: Nakamoto, S <defi@defi-oracle.io>

fusionagi/schemas/messages.py

@@ -11,7 +11,7 @@ from fusionagi._time import utc_now
 class AgentMessage(BaseModel):
     """
     Structured message between agents.
-    
+
     Includes validation for:
     - Non-empty sender, recipient, and intent
     - Confidence in valid [0, 1] range
@@ -45,7 +45,7 @@ class AgentMessage(BaseModel):
 class AgentMessageEnvelope(BaseModel):
     """
     Top-level envelope for agent messages; can carry task context.
-    
+
     The envelope wraps a message and provides additional context:
     - task_id: Associates the message with a specific task
     - correlation_id: Enables request/response tracking
@@ -78,7 +78,7 @@ class AgentMessageEnvelope(BaseModel):
     ) -> "AgentMessageEnvelope":
         """
         Create a response envelope to this message.
-        
+
         Swaps sender/recipient and preserves task_id and correlation_id.
         """
         return AgentMessageEnvelope(