feat(templates): refonte complète des templates façon Notion + vues/agents-skills

Templates (v7.71.x) :

- registre unifié \	emplates\ (migrations 48-49) + TemplateService.instantiate unique (UI, API v2, agent, scheduler)

- sélecteur (pilule page vide, menu •••, commande /template), gestionnaire /templates, menu New ▾, From template, base inline dans un document

- 141 presets système (59 pages, 42 bases, 15 blocs, 25 lignes), titre auto depuis le template, variables title réservée

- récurrences RRULE + scheduler dédupliqué, agent apply_template/list_templates, API /api/templates + /api/v2/fd-templates

- correctifs : bouton Templates, centrage fenêtre, filtres CSP, flux de création, variable title

- tests : tests/test_fd_templates.py (19) et e2e/templates_picker.spec.js (8)

Inclut le travail déjà présent dans le working tree (vues Notion : view_query/view_aggregate/form_projection/geocoding, property_types, database_table, docs agents-skills) et ignore .playwright-mcp/.

app/services/tool_registry.py

@@ -703,32 +703,134 @@ class AddDependency(Tool):
 
 class ApplyTemplate(Tool):
     name = "apply_template"
-    description = "Applique un template de page dans une collection (crée une page)."
+    description = (
+        "Applique un template du registre unifié (crée une page, une ligne, "
+        "une base ou des blocs). Même service que l'UI (TemplateService)."
+    )
     parameters = {
         "type": "object",
-        "properties": {"collection_id": {"type": "integer"}, "template_id": {"type": "integer"}, "title": {"type": "string"}},
-        "required": ["collection_id", "template_id"],
+        "properties": {
+            "collection_id": {"type": "integer"},
+            "template_id": {"type": ["integer", "string"]},
+            "title": {"type": "string"},
+            "variables": {"type": "object"},
+        },
+        "required": ["template_id"],
     }
 
     async def execute(self, args, *, user_id=None) -> ToolResult:
-        cid, tid = args.get("collection_id"), args.get("template_id")
+        from app.services.fd_templates import TemplateService, registry_ready
+
+        tid = args.get("template_id")
+        cid = args.get("collection_id")
+        # Compat legacy : un id numérique de page_templates.
+        template_ref: str = str(tid)
         with get_conn() as conn:
-            tmpl = conn.execute("SELECT * FROM page_templates WHERE id=? AND collection_id=?", (tid, cid)).fetchone()
-            if not tmpl:
-                return ToolResult(status="error", tool=self.name, message="Template introuvable")
-            max_pos = conn.execute("SELECT COALESCE(MAX(position), -1) + 1 FROM collection_pages WHERE collection_id=?", (cid,)).fetchone()[0]
-            cur = conn.execute(
-                "INSERT INTO collection_pages (collection_id, title, position, property_values_json) VALUES (?,?,?,?)",
-                (cid, args.get("title", "New Page"), max_pos, tmpl["property_values_json"]),
-            )
-            conn.commit()
+            actor = _actor_for(conn, user_id)
+            if registry_ready(conn) and isinstance(tid, int):
+                legacy = conn.execute(
+                    "SELECT id FROM templates WHERE source_kind='legacy_page' AND source_id=?",
+                    (str(tid),),
+                ).fetchone()
+                if legacy:
+                    template_ref = legacy["id"]
+            variables = dict(args.get("variables") or {})
+            if args.get("title"):
+                variables.setdefault("title", args["title"])
+            context: dict = {}
+            if cid:
+                context["collection_id"] = cid
+            try:
+                result = TemplateService.instantiate(
+                    conn, actor, template_ref, variables, context,
+                    run_source="agent",
+                )
+            except LookupError as exc:
+                return ToolResult(status="error", tool=self.name, message=str(exc))
+            except (ValueError, PermissionError) as exc:
+                return ToolResult(status="error", tool=self.name, message=str(exc))
+            except Exception as exc:  # noqa: BLE001 — l'agent doit recevoir l'erreur
+                logger.exception("apply_template agent")
+                return ToolResult(status="error", tool=self.name, message=str(exc))
+        created_id = result.get("created_id") or None
+        try:
+            target_id = int(created_id) if created_id else 0
+        except (TypeError, ValueError):
+            target_id = 0
+        undo = None
+        if result.get("created_type") in ("page", "row", "collection") and target_id:
+            table = {"page": "pages", "row": "collection_pages",
+                     "collection": "collections"}[result["created_type"]]
+            undo = {"action": "delete", "table": table, "id": target_id}
         return ToolResult(
-            status="success", tool=self.name, target_type="page", target_id=cur.lastrowid,
-            data={"page_id": cur.lastrowid},
-            undo={"action": "delete", "table": "collection_pages", "id": cur.lastrowid},
+            status="success", tool=self.name,
+            target_type=result.get("created_type") or "page",
+            target_id=target_id,
+            data={"page_id": target_id, "url": result.get("url"),
+                  "warnings": result.get("warnings", []),
+                  "run_id": result.get("run_id")},
+            undo=undo,
         )
 
 
+class ListTemplates(Tool):
+    name = "list_templates"
+    description = "Liste les templates visibles par l'utilisateur (registre unifié)."
+    parameters = {
+        "type": "object",
+        "properties": {
+            "kind": {"type": "string"},
+            "query": {"type": "string"},
+            "target_collection_id": {"type": "integer"},
+        },
+        "required": [],
+    }
+
+    async def execute(self, args, *, user_id=None) -> ToolResult:
+        from app.services.fd_templates import TemplateService
+
+        with get_conn() as conn:
+            actor = _actor_for(conn, user_id)
+            try:
+                items = TemplateService.list_templates(
+                    conn, actor, kind=args.get("kind"),
+                    query=args.get("query"),
+                    target_collection_id=args.get("target_collection_id"),
+                )
+            except Exception as exc:  # noqa: BLE001
+                logger.exception("list_templates agent")
+                return ToolResult(status="error", tool=self.name, message=str(exc))
+        summary = [
+            {"id": t["id"], "kind": t["kind"], "name": t["name"],
+             "scope": t["scope"], "is_default": t.get("is_default", False)}
+            for t in items
+        ]
+        return ToolResult(
+            status="success", tool=self.name, target_type="templates",
+            data={"templates": summary},
+        )
+
+
+def _actor_for(conn, user_id: int | None) -> dict:
+    """Acteur minimal pour le service (l'agent n'agit jamais au-delà de
+    l'utilisateur appelant, §6.1 de l'architecture)."""
+    actor: dict = {"id": user_id}
+    if user_id:
+        try:
+            row = conn.execute(
+                "SELECT id, login, full_name, is_admin FROM users WHERE id=?",
+                (user_id,),
+            ).fetchone()
+            if row:
+                actor.update(
+                    {"login": row["login"], "full_name": row["full_name"],
+                     "is_admin": bool(row["is_admin"])}
+                )
+        except Exception:
+            pass
+    return actor
+
+
 # ══════════════════════════ Destructive tools ══════════════════════════
 
 
@@ -1149,7 +1251,7 @@ TOOL_CLASSES = [
     SearchWorkspace, ReadCollection, ReadPage, ReadWorkspaces, ReadDocument,
     CreateCollection, CreateView, AddProperty, CreatePage, CreateDocument,
     UpdatePage, WriteBlocks,
-    AddRelation, CreateSubItem, AddDependency, ApplyTemplate,
+    AddRelation, CreateSubItem, AddDependency, ApplyTemplate, ListTemplates,
     DeletePage, DeleteCollection,
     ReadGiteaIssues, SyncGitea, CreateGiteaIssue,
     DeleteDocument,