chore(rgpd): replace CHCB/Bayonne/Saint-Denis/Réunion refs in source + configs (D-12)

Anonymise toutes les références à des entités réelles (CHCB, Bayonne, Saint-Denis,
Réunion, etc.) dans le code source, les configurations YAML, les scripts/outils,
et les tests unitaires. Conserve les tests synthétiques (cases) intentionnels.

- profile key chcb_strict → chuxx_strict
- CHCB → CHUXX, Bayonne → Chicago, Saint-Denis → Springfield,
  Réunion → Province Bêta, 64100/97400 → 12345, FINESS → 999999999,
  préfixe tél 05.59.44 → 0X.XX.XX
- renomme tools/test_chcb_leak.py → tools/test_force_term_leak.py

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/unit/test_config_externalization.py

@@ -22,7 +22,7 @@ def test_default_config_template_is_externalized():
     assert "whitelist_phrases:" in text
 
     cfg = core.load_dictionaries(None)
-    assert "CHCB" in cfg["blacklist"]["force_mask_terms"]
+    assert "CHUXX" in cfg["blacklist"]["force_mask_terms"]
 
 
 def test_runtime_overlay_template_is_minimal():
@@ -82,14 +82,14 @@ def test_runtime_overlay_is_created_and_effective_merge_works(tmp_path: Path):
     assert cfg_path.exists()
 
     effective = load_effective_dictionaries_dict(cfg_path)
-    assert "CHCB" in effective["blacklist"]["force_mask_terms"]
+    assert "CHUXX" in effective["blacklist"]["force_mask_terms"]
 
     cfg_path.write_text(
         "blacklist:\n  force_mask_terms:\n    - LOCAL_SIGLE\n",
         encoding="utf-8",
     )
     effective = load_effective_dictionaries_dict(cfg_path)
-    assert "CHCB" in effective["blacklist"]["force_mask_terms"]
+    assert "CHUXX" in effective["blacklist"]["force_mask_terms"]
     assert "LOCAL_SIGLE" in effective["blacklist"]["force_mask_terms"]
 
 
@@ -100,5 +100,5 @@ def test_effective_param_lists_include_defaults_when_overlay_is_empty(tmp_path:
     params = load_effective_param_lists(cfg_path)
 
     assert "classification internationale" in params["whitelist_phrases"]
-    assert "CHCB" in params["blacklist_force_mask_terms"]
+    assert "CHUXX" in params["blacklist_force_mask_terms"]
     assert params["additional_stopwords"] == []