feat: collect py-jwt wiki; register wiki kind; refresh lib and mcp artifacts

Adds the py-jwt wiki to the hub alongside lib and mcp and picks up
the regenerated flat lib reference and standardized MCP modules.

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

@@ -4,18 +4,11 @@
     "path": "jwtlib.models.security",
     "docstring": "# Summary\n\nJWT token payload models.\n\nThis module defines typed representations of decoded `JWT` payloads used\ninternally for token validation and user resolution.",
     "objects": {
-      "BaseModel": {
-        "name": "BaseModel",
-        "kind": "alias",
-        "path": "jwtlib.models.security.BaseModel",
-        "signature": "<bound method Alias.signature of Alias('BaseModel', 'pydantic.BaseModel')>",
-        "docstring": null
-      },
       "TokenPayload": {
         "name": "TokenPayload",
         "kind": "class",
         "path": "jwtlib.models.security.TokenPayload",
-        "signature": "<bound method Class.signature of Class('TokenPayload', 13, 38)>",
+        "signature": null,
         "docstring": "Decoded `JWT` payload.\n\nAttributes:\n    sub (str):\n        Subject claim identifying the user (typically a username or user ID).\n    exp (int):\n        Expiration time as a Unix timestamp (seconds since epoch).\n\nNotes:\n    **Responsibilities:**\n\n        - Represents the validated claims extracted from a `JWT` after\n          signature verification. This model is used internally to enforce\n          required claims and provide a typed interface to token data.\n\n    **Guarantees:**\n\n        - This model assumes the `JWT` signature has already been verified.\n          No authorization decisions should be made solely on this model.\n          Additional claims may exist but are intentionally ignored.",
         "members": {
           "sub": {