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/Add Books to Collection.yml

@@ -8,31 +8,5 @@ http:
   auth: inherit
   body:
     type: json
-    jsonBody: "{\n    \"book_ids\": [\n      \"{{book_id_1}}"
-
-docs: |-
-  ## Add Books to Collection
-  
-    Adds multiple books to an existing collection.
-    
-    **Method:** POST
-    
-    **Endpoint:** /api/collections/{collection_id}/books
-    
-    **Authentication:** Required (Bearer token)
-    
-    **Path Parameters:**
-    - `collection_id` (string): Collection ID
-    
-    **Request Body:**
-    - `book_ids` (array of strings, required): List of book IDs to add
-    
-    **Response:**
-    - `message` (string): Success message
-    - `added_count` (integer): Number of books added
-    
-    **Status Codes:**
-    - 200: Success
-    - 400: Invalid request
-    - 401: Unauthorized
-    - 404: Collection not found
+    data: "{\n    \"book_ids\": [\n      \"{{book_id_1}}"
+docs: "## Add Books to Collection\n\n  Adds multiple books to an existing collection.\n  \n  **Method:** POST\n  \n  **Endpoint:** /api/collections/{collection_id}/books\n  \n  **Authentication:** Required (Bearer token)\n  \n  **Path Parameters:**\n  - `collection_id` (string): Collection ID\n  \n  **Request Body:**\n  - `book_ids` (array of strings, required): List of book IDs to add\n  \n  **Response:**\n  - `message` (string): Success message\n  - `added_count` (integer): Number of books added\n  \n  **Status Codes:**\n  - 200: Success\n  - 400: Invalid request\n  - 401: Unauthorized\n  - 404: Collection not found"