fix: vendor per-kind sites in the hub; drop stale blog docs

- collect.py: when a kind points at the shared site root, copy only the
  per-kind subdir (site/lib -> <repo>/lib) instead of the whole site, so
  stray single-site build output never leaks into the hub
- Purge stale collected artifacts (404.html, assets/, search/, sitemaps,
  objects.inv, duplicate mcp/) from every repo dir, matching the cleaned
  source site/ roots
- Refresh collected output from source repos, incl. the khata-app app
- Remove the vendored Blog API docs (config.yml entry + blog/) and its card

py-jwt/mcp/modules/jwtlib.models.mongo.json

@@ -1,71 +0,0 @@
-{
-  "module": "jwtlib.models.mongo",
-  "content": {
-    "path": "jwtlib.models.mongo",
-    "docstring": "# Summary\n\nPersistence-layer user model for MongoDB.\n\nThis module defines the internal database representation of a user.\nIt is used exclusively by the repository and persistence layers and\nmust never be exposed directly to consumers.\n\nPublic-facing user data is provided via dedicated projection models.",
-    "objects": {
-      "BaseDocument": {
-        "name": "BaseDocument",
-        "kind": "alias",
-        "path": "jwtlib.models.mongo.BaseDocument",
-        "signature": "<bound method Alias.signature of Alias('BaseDocument', 'mongo_ops.BaseDocument')>",
-        "docstring": null
-      },
-      "ActiveStateMixin": {
-        "name": "ActiveStateMixin",
-        "kind": "class",
-        "path": "jwtlib.models.mongo.ActiveStateMixin",
-        "signature": "<bound method Alias.signature of Alias('ActiveStateMixin', 'jwtlib.models.common.ActiveStateMixin')>",
-        "docstring": "Mixin for entities with an active status flag.\n\nAttributes:\n    is_active (bool):\n        Indicates whether the account is active and allowed to\n        authenticate.",
-        "members": {
-          "is_active": {
-            "name": "is_active",
-            "kind": "attribute",
-            "path": "jwtlib.models.mongo.ActiveStateMixin.is_active",
-            "signature": "<bound method Alias.signature of Alias('is_active', 'jwtlib.models.common.ActiveStateMixin.is_active')>",
-            "docstring": null
-          }
-        }
-      },
-      "IdentityMixin": {
-        "name": "IdentityMixin",
-        "kind": "class",
-        "path": "jwtlib.models.mongo.IdentityMixin",
-        "signature": "<bound method Alias.signature of Alias('IdentityMixin', 'jwtlib.models.common.IdentityMixin')>",
-        "docstring": "Mixin for entities with a username and email.\n\nAttributes:\n    username (str):\n        Unique username used for authentication and display.\n    email (Optional[EmailStr]):\n        Primary email address associated with the account.",
-        "members": {
-          "username": {
-            "name": "username",
-            "kind": "attribute",
-            "path": "jwtlib.models.mongo.IdentityMixin.username",
-            "signature": "<bound method Alias.signature of Alias('username', 'jwtlib.models.common.IdentityMixin.username')>",
-            "docstring": null
-          },
-          "email": {
-            "name": "email",
-            "kind": "attribute",
-            "path": "jwtlib.models.mongo.IdentityMixin.email",
-            "signature": "<bound method Alias.signature of Alias('email', 'jwtlib.models.common.IdentityMixin.email')>",
-            "docstring": null
-          }
-        }
-      },
-      "User": {
-        "name": "User",
-        "kind": "class",
-        "path": "jwtlib.models.mongo.User",
-        "signature": "<bound method Class.signature of Class('User', 18, 40)>",
-        "docstring": "Internal user persistence model.\n\nAttributes:\n    hashed_password (str):\n        Secure hash of the user's password.\n\nNotes:\n    **Responsibilities:**\n\n        - Represents a user record as stored in the database. Includes\n          sensitive fields and is strictly confined to the persistence\n          layer.\n\n    **Guarantees:**\n\n        - This model MUST NOT be returned from authentication APIs.\n          Consumers should use `PublicUser` instead. Password verification\n          is handled by the repository layer.",
-        "members": {
-          "hashed_password": {
-            "name": "hashed_password",
-            "kind": "attribute",
-            "path": "jwtlib.models.mongo.User.hashed_password",
-            "signature": null,
-            "docstring": null
-          }
-        }
-      }
-    }
-  }
-}