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/tools/__init__.py

@@ -1,8 +1,13 @@
 """Tool registry, safe execution, connectors (docs, DB, code runner)."""
 
-from fusionagi.tools.registry import ToolRegistry, ToolDef
+from fusionagi.tools.connectors import (
+    BaseConnector,
+    CodeRunnerConnector,
+    DBConnector,
+    DocsConnector,
+)
+from fusionagi.tools.registry import ToolDef, ToolRegistry
 from fusionagi.tools.runner import run_tool, run_tool_with_audit
-from fusionagi.tools.connectors import BaseConnector, DocsConnector, DBConnector, CodeRunnerConnector
 
 __all__ = [
     "ToolRegistry",