feat(agent): v4.15.0 - panneau Agent style Notion AI (mentions @ inline + skills / + actions sous chaque réponse)

- Composeur contenteditable : mentions inline (pastilles icône+nom), barre de contexte groupée documents/skills, sélecteur @ (icône+titre+chemin), skills intégrés + agent_skills + commandes admin via '/'
- Actions sous chaque réponse agent : copier, insérer dans la page, feedback 👍/👎
- Backend : table agent_feedback, GET /api/agent/mentions, POST /api/agent/feedback, contexte document:<id>/page:<id>/collection:<id> résolu en contenu réel
- Inclut le travail v4.14.0 (documents/espace de travail + outils + auto-titre de conversation)

app/services/permission_manager.py

@@ -22,13 +22,15 @@ DESTRUCTIVE_ROLES = {"admin", "owner"}
 # Tools that mutate state and therefore require at least an editor role.
 WRITE_TOOLS = {
     "create_collection", "create_view", "create_page", "update_page",
-    "write_blocks", "add_property", "add_relation", "create_sub_item",
-    "add_dependency", "sync_gitea", "create_gitea_issue", "apply_template",
+    "write_blocks", "create_document", "add_property", "add_relation",
+    "create_sub_item", "add_dependency", "sync_gitea", "create_gitea_issue",
+    "apply_template",
 }
 
 # Tools that delete / are destructive → admin/owner (or confirm mode).
 DESTRUCTIVE_TOOLS = {
-    "delete_page", "delete_collection", "delete_property", "delete_view",
+    "delete_page", "delete_collection", "delete_document",
+    "delete_property", "delete_view",
 }