v1.0 - Version stable: multi-PC, détection UI-DETR-1, 3 modes exécution

- Frontend v4 accessible sur réseau local (192.168.1.40)
- Ports ouverts: 3002 (frontend), 5001 (backend), 5004 (dashboard)
- Ollama GPU fonctionnel
- Self-healing interactif
- Dashboard confiance

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/archive/misc/CODE_IMPROVEMENTS_29NOV.md

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+# Code Quality Improvements - 29 November 2025
+
+## Summary
+
+Continuation of code quality improvements from the previous session. Focus on exception handling, logging, and security.
+
+## Changes Made
+
+### 1. Exception Handling Improvements
+
+Replaced bare `except:` clauses with specific exception types:
+
+- **core/detection/ollama_client.py**
+  - `is_available()`: Now catches `requests.ConnectionError`, `requests.Timeout`
+  - `list_models()`: Now catches `requests.ConnectionError`, `requests.Timeout`, `json.JSONDecodeError`, `KeyError`
+
+- **core/embedding/faiss_manager.py**
+  - `_save_index_only()`: Now catches `OSError`, `IOError` specifically
+
+- **core/capture/screen_capturer.py**
+  - `capture_screen()`: Now catches `OSError`, `ImportError` specifically
+
+### 2. Logging Improvements
+
+Replaced `print()` statements with proper `logging` calls in:
+
+| File | print() removed | Logger added |
+|------|-----------------|--------------|
+| core/detection/ui_detector.py | 21 | ✅ |
+| core/detection/roi_optimizer.py | 6 | ✅ |
+| core/embedding/state_embedding_builder.py | 8 | ✅ |
+| core/graph/node_matcher.py | 7 | ✅ |
+| core/embedding/faiss_manager.py | 2 | ✅ |
+| core/capture/screen_capturer.py | 2 | ✅ |
+
+**Total: ~46 print() statements converted to logging**
+
+### 3. Security Improvements
+
+- **server/api_upload.py**: Added production environment check for `ENCRYPTION_PASSWORD`
+  - Raises `ValueError` if not set in production
+  - Logs warning when using default key in development
+
+### 4. Configuration System
+
+- **core/config.py**: Already complete centralized configuration system with:
+  - `ServerConfig`: API and dashboard settings
+  - `SecurityConfig`: Encryption and secrets with production validation
+  - `ModelConfig`: ML model settings (CLIP, VLM, OWL)
+  - `PathConfig`: Directory paths with auto-creation
+  - `FAISSConfig`: Vector search settings
+  - `AppConfig`: Main configuration aggregator
+  - `get_config()`: Singleton pattern for global access
+
+## Test Results
+
+All tests pass after changes:
+- ✅ test_faiss_ivf_optimization.py (8/8 tests)
+- ✅ test_roi_optimizer.py (12/12 tests)
+
+## Remaining print() Statements
+
+13 `print()` statements remain, all in acceptable locations:
+- `if __name__ == "__main__"` blocks (test/example code)
+- Docstrings (documentation examples)
+
+## Files Modified
+
+1. core/detection/ollama_client.py
+2. core/detection/ui_detector.py
+3. core/detection/roi_optimizer.py
+4. core/embedding/faiss_manager.py
+5. core/embedding/state_embedding_builder.py
+6. core/graph/node_matcher.py
+7. core/capture/screen_capturer.py
+8. server/api_upload.py
+
+## Next Steps (if needed)
+
+1. Add type hints to remaining functions
+2. Add docstrings to undocumented functions
+3. Consider adding structured logging (JSON format) for production
+4. Add request validation with Pydantic models