fix(bruno): convert drifted body keys to body.data — CLI scenario runs now carry bodies

Follow-up to the sweep route audit, correcting its diagnosis: the CLI
DOES read .yml bodies — via OpenCollection's `body.data` string form
(the NewDevDBSetup script always worked because it used it). The
failing scenario POSTs used `body.json` (structured) / `body.jsonBody`
(string) — keys the CLI silently ignores, sending Content-Length: 0
with form-urlencoded content-type, so every server bind failed.

- 81 bodies converted to data-form (json maps serialized; jsonBody
  strings kept verbatim, {{vars}} intact).
- 6 pre-existing TRUNCATED payloads repaired: the original generator
  cut bodies at the first {{var}} (every SHA-256-identified scenario
  plus Sync Progress/Sync Bookmarks shipped mid-JSON and 400'd from
  day one). Rewritten whole, faithful to each file's documented
  purpose; book_sha256/book_uuid added to the environment.
- environments: opds_base_url correction from the sweep retained.

Verified live against the rebuilt dev container: the full koreader
scenario tree runs green through `bru run` — 14/14 (202s across
immediate/checkpoint/SHA-256 progress, 200s bookmarks, highlights,
notes; SHA-256 book identification exercised against a real
file_sha256).

bruno/collections/Update Device Mapping.yml

@@ -8,33 +8,5 @@ http:
   auth: inherit
   body:
     type: json
-    jsonBody: "{\n    \"device_shelf_name\": \"Science Fiction\",\n    \"sync_direction\"\
-      : \"book_to_device\""
-
-docs: |-
-  ## Update Device Mapping
-  
-    Updates settings for a collection-to-device mapping.
-    
-    **Method:** PUT
-    
-    **Endpoint:** /api/devices/{device_id}/collections/{mapping_id}
-    
-    **Authentication:** Required (Bearer token)
-    
-    **Path Parameters:**
-    - `device_id` (string): Device ID
-    - `mapping_id` (string): Mapping ID
-    
-    **Request Body:**
-    - `device_shelf_name` (string, optional): Custom shelf name on device
-    - `sync_direction` (string, optional): Sync direction (book_to_device, device_to_book, bidirectional)
-    
-    **Response:**
-    - Updated mapping object
-    
-    **Status Codes:**
-    - 200: Success
-    - 400: Invalid request
-    - 401: Unauthorized
-    - 404: Device or mapping not found
+    data: "{\n    \"device_shelf_name\": \"Science Fiction\",\n    \"sync_direction\": \"book_to_device\""
+docs: "## Update Device Mapping\n\n  Updates settings for a collection-to-device mapping.\n  \n  **Method:** PUT\n  \n  **Endpoint:** /api/devices/{device_id}/collections/{mapping_id}\n  \n  **Authentication:** Required (Bearer token)\n  \n  **Path Parameters:**\n  - `device_id` (string): Device ID\n  - `mapping_id` (string): Mapping ID\n  \n  **Request Body:**\n  - `device_shelf_name` (string, optional): Custom shelf name on device\n  - `sync_direction` (string, optional): Sync direction (book_to_device, device_to_book, bidirectional)\n  \n  **Response:**\n  - Updated mapping object\n  \n  **Status Codes:**\n  - 200: Success\n  - 400: Invalid request\n  - 401: Unauthorized\n  - 404: Device or mapping not found"