fix(workspace): compteurs de tags dynamiques + counts scoped par workspace

app/routers/dashboard.py

@@ -1900,7 +1900,10 @@ async def list_all_tags_global(request: Request):
             "WHERE t.user_id = ? GROUP BY t.id ORDER BY t.name",
             (uid,),
         ).fetchall()
-    return {"tags": [dict(r) for r in rows]}
+    return JSONResponse(
+        {"tags": [dict(r) for r in rows]},
+        headers={"Cache-Control": "no-store"},
+    )
 
 
 # ═══════════ Workspace Tags API ═══════════
@@ -1915,14 +1918,17 @@ async def list_tags(request: Request):
         return {"tags": []}
     with get_conn() as conn:
         rows = conn.execute(
-            "SELECT t.id, t.name, t.color, COUNT(pt.page_id) as count "
-            "FROM tags t "
-            "LEFT JOIN page_tags pt ON pt.tag_id = t.id "
-            "LEFT JOIN pages p ON p.id = pt.page_id AND p.workspace_id = ? "
-            "WHERE t.user_id = ? GROUP BY t.id ORDER BY t.name",
+            "SELECT t.id, t.name, t.color, "
+            "(SELECT COUNT(*) FROM page_tags pt "
+            " JOIN pages p ON p.id = pt.page_id AND p.workspace_id = ? "
+            " WHERE pt.tag_id = t.id) as count "
+            "FROM tags t WHERE t.user_id = ? ORDER BY t.name",
             (ws_id, uid),
         ).fetchall()
-    return {"tags": [dict(r) for r in rows]}
+    return JSONResponse(
+        {"tags": [dict(r) for r in rows]},
+        headers={"Cache-Control": "no-store"},
+    )
 
 
 @router.get("/api/local-workspace/items/{item_id:int}/tags")