refactor: serve MCP bundles under <name>/mcp with nginx guard; rename core->mcp_server

- collect.py: copy repo MCP bundles to ROOT/<name>/mcp (instead of ROOT/mcp/<name>); add nginx location guard to deny /<name>/mcp/
- config.py: bundle roots now point to <repo>/mcp and standards/mcp for static bundles
- Rename core.py -> mcp_server.py and update imports in main.py and registry.py
- Dockerfile: per-repo MCP COPYs under /app/<name>/mcp, drop blog copy; add ports 8008/8009 in .drone.yml
- Restore standards/mcp/libraries.json from git for registry server

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

@@ -0,0 +1,64 @@
+{
+  "module": "jwtlib.models.common",
+  "content": {
+    "path": "jwtlib.models.common",
+    "docstring": "# Summary\n\nCommon Pydantic mixins for authentication models.\n\nThis module provides reusable mixins for identity, password, and\naccount state. These mixes ensure consistency across internal\npersistence models and public-facing projection models.",
+    "objects": {
+      "IdentityMixin": {
+        "name": "IdentityMixin",
+        "kind": "class",
+        "path": "jwtlib.models.common.IdentityMixin",
+        "signature": null,
+        "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.common.IdentityMixin.username",
+            "signature": null,
+            "docstring": null
+          },
+          "email": {
+            "name": "email",
+            "kind": "attribute",
+            "path": "jwtlib.models.common.IdentityMixin.email",
+            "signature": null,
+            "docstring": null
+          }
+        }
+      },
+      "PasswordMixin": {
+        "name": "PasswordMixin",
+        "kind": "class",
+        "path": "jwtlib.models.common.PasswordMixin",
+        "signature": null,
+        "docstring": "Mixin for entities with a raw password field.\n\nAttributes:\n    password (str):\n        User password (minimum 6 characters).",
+        "members": {
+          "password": {
+            "name": "password",
+            "kind": "attribute",
+            "path": "jwtlib.models.common.PasswordMixin.password",
+            "signature": null,
+            "docstring": null
+          }
+        }
+      },
+      "ActiveStateMixin": {
+        "name": "ActiveStateMixin",
+        "kind": "class",
+        "path": "jwtlib.models.common.ActiveStateMixin",
+        "signature": null,
+        "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.common.ActiveStateMixin.is_active",
+            "signature": null,
+            "docstring": null
+          }
+        }
+      }
+    }
+  }
+}