feat(learning-harness): absence rows travel with their registration

Eight of the ten vendored access-control rows had no named handler at all,
so every one of them would have scored `missing_context` forever rather
than as a detector miss. After the re-harvest nine are named and the tenth
states its reason.

The handler-context mode now carries the class its framework registers,
multi-line decorators, and commented-out guards -- `#@token_required`
above a ThreatByte handler is the entire bug. Where the registration lives
in another document (connexion's `operationId`, an express router), a
recipe names `context = [...]`, the harvester writes that stanza per side,
and the pair materializes both files at their repository-relative paths so
the entry-point mapper sees the layout the project has. `harvest_recipe`
fetches every blob before the first write and the driver takes `--report`,
so a failed fetch leaves a reviewed excerpt exactly as it was.

Two defects the re-harvest exposed: `.mjs` was not a known suffix, so the
one pair vendored as an ES module had no file target at all; and
`_python_route_access` matched auth words inside decorator prose, reading
`@ns.doc(description='... without proper authorization checks')` as a
guard. Recorded in the hygiene artifact: nine of the ten duplicate groups
sit on both sides of the split, which the repository-level split cannot
see.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01T7XD7x5KonMdmGRkp63EQG

benchmarks/pairs/vibe-py/vampi-books-get-by-title/context/fixed/openapi_specs/openapi3.yml

@@ -0,0 +1,79 @@
+# Provenance: erev0s/VAmPI get_by_title (fixed).
+# repo: erev0s/VAmPI
+# commit: 1713b54b601ad29582581eeda4b31fceb1319874
+# parent: 1713b54b601ad29582581eeda4b31fceb1319874
+# commit_url: https://github.com/erev0s/VAmPI/blob/1713b54b601ad29582581eeda4b31fceb1319874/api_views/books.py#L51
+# cve: 
+# license: MIT
+# function: get_by_title
+# relpath: openapi_specs/openapi3.yml
+# provenance: human
+# mechanism: missing_auth_guard
+
+paths:
+  /books/v1/{book_title}:
+    get:
+      security:
+        - bearerAuth: [ ]
+      tags:
+        - books
+      summary: Retrieves book by title along with secret
+      description: >-
+        Retrieves book by title along with secret. Only the owner may retrieve
+        it
+      operationId: api_views.books.get_by_title
+      parameters:
+        - name: book_title
+          in: path
+          description: retrieve book data
+          required: true
+          schema:
+            type: string
+            example: 'bookTitle77'
+      responses:
+        '200':
+          description: Successfully retrieve book info
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  type: object
+                  properties:
+                    book_title:
+                      type: string
+                      example: 'bookTitle77'
+                    owner:
+                      type: string
+                      example: 'name1'
+                    secret:
+                      type: string
+                      example: 'secret for bookTitle77'
+        '401':
+          description: User not authorized
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  status:
+                    type: string
+                    enum: ['fail']
+                    example: 'fail'
+                  message:
+                    type: string
+                    example: 'Invalid token. Please log in again.'
+        '404':
+          description: Book not found
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  status:
+                    type: string
+                    enum: ['fail']
+                    example: 'fail'
+                  message:
+                    type: string
+                    example: 'Book not found!'

benchmarks/pairs/vibe-py/vampi-books-get-by-title/context/vuln/openapi_specs/openapi3.yml

@@ -0,0 +1,79 @@
+# Provenance: erev0s/VAmPI get_by_title (vuln).
+# repo: erev0s/VAmPI
+# commit: 1713b54b601ad29582581eeda4b31fceb1319874
+# parent: 1713b54b601ad29582581eeda4b31fceb1319874
+# commit_url: https://github.com/erev0s/VAmPI/blob/1713b54b601ad29582581eeda4b31fceb1319874/api_views/books.py#L51
+# cve: 
+# license: MIT
+# function: get_by_title
+# relpath: openapi_specs/openapi3.yml
+# provenance: human
+# mechanism: missing_auth_guard
+
+paths:
+  /books/v1/{book_title}:
+    get:
+      security:
+        - bearerAuth: [ ]
+      tags:
+        - books
+      summary: Retrieves book by title along with secret
+      description: >-
+        Retrieves book by title along with secret. Only the owner may retrieve
+        it
+      operationId: api_views.books.get_by_title
+      parameters:
+        - name: book_title
+          in: path
+          description: retrieve book data
+          required: true
+          schema:
+            type: string
+            example: 'bookTitle77'
+      responses:
+        '200':
+          description: Successfully retrieve book info
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  type: object
+                  properties:
+                    book_title:
+                      type: string
+                      example: 'bookTitle77'
+                    owner:
+                      type: string
+                      example: 'name1'
+                    secret:
+                      type: string
+                      example: 'secret for bookTitle77'
+        '401':
+          description: User not authorized
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  status:
+                    type: string
+                    enum: ['fail']
+                    example: 'fail'
+                  message:
+                    type: string
+                    example: 'Invalid token. Please log in again.'
+        '404':
+          description: Book not found
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  status:
+                    type: string
+                    enum: ['fail']
+                    example: 'fail'
+                  message:
+                    type: string
+                    example: 'Book not found!'