feat: interface admin regles, refactoring viewer, README, pyproject.toml

- Nouveau module rules_manager.py : CRUD YAML pour les regles metier
- Nouveau blueprint bp_rules.py + template admin_rules.html :
  interface web pour activer/desactiver/ajouter/supprimer des regles
- Extraction helpers.py depuis app.py (filtres Jinja2, statistiques,
  scan dossiers, status systeme) — app.py passe de 1585 a 482 lignes
- Suppression backward-compat re-exports dans cim10_extractor et
  cpam_response (imports corriges dans les tests)
- README.md : architecture, modules, installation, utilisation
- pyproject.toml : dependencies completes, config ruff, pytest, coverage

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/control/cpam_response.py

@@ -37,19 +37,6 @@ from .cpam_validation import (
     _guardian_deterministic,
 )
 
-# Backward compat — sera retiré dans un commit futur
-from .cpam_rag import _search_rag_queries  # noqa: F401
-from .cpam_context import (  # noqa: F401
-    _get_code_label,
-    _get_cim10_definitions,
-    _BIO_INTERPRETATION,
-    _BIO_THRESHOLDS,
-    _assess_dossier_strength,
-    _build_bio_summary,
-    _build_bio_confrontation,
-    _check_das_bio_coherence,
-)
-from .cpam_validation import _CIM10_CODE_RE, _validate_adversarial as _validate_adversarial, _assess_quality_tier as _assess_quality_tier, _fuzzy_match_ref as _fuzzy_match_ref, _sanitize_unauthorized_codes as _sanitize_unauthorized_codes  # noqa: F401
 
 logger = logging.getLogger(__name__)