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/core/state_manager.py

@@ -3,10 +3,10 @@
 from __future__ import annotations
 
 from collections import defaultdict
-from typing import Any, TYPE_CHECKING
+from typing import TYPE_CHECKING, Any
 
-from fusionagi.schemas.task import Task, TaskState
 from fusionagi._logger import logger
+from fusionagi.schemas.task import Task, TaskState
 
 if TYPE_CHECKING:
     from fusionagi.core.persistence import StateBackend
@@ -15,7 +15,7 @@ if TYPE_CHECKING:
 class StateManager:
     """
     Manages task state and execution traces.
-    
+
     Supports optional persistent backend via dependency injection. When a backend
     is provided, all operations are persisted. In-memory cache is always maintained
     for fast access.
@@ -24,7 +24,7 @@ class StateManager:
     def __init__(self, backend: StateBackend | None = None) -> None:
         """
         Initialize StateManager with optional persistence backend.
-        
+
         Args:
             backend: Optional StateBackend for persistence. If None, uses in-memory only.
         """