docs: MCP tool names and job tools, codec README JPEG metadata and deep EXR (#1552, #1553, #1559)

- architecture.md listed dotted MCP tool names (doc.open, command.run...) that the server
  rejects; it now uses the advertised underscore names, adds the missing tools, and points
  out that dotted names belong to the JSON control protocol.
- development.md's MCP tool inventory gains jobs_list and jobs_cancel.
- crates/codecs/README.md: oversized JPEG EXIF/XMP is dropped with a warning (XMP first sheds
  its layered-document properties), not an error; supported deep EXR opens flattened with a
  DeepFlattened warning, and only deep ZIP and mip/rip-map tiles are unsupported.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UHgFEHEsefoQoBParH47JA

docs/development.md

@@ -143,6 +143,7 @@ Tools:
 - `session_list`
 - `doc_open`, `doc_new`, `doc_save`, `doc_export`, `doc_inspect`, `doc_render_preview` (returns a PNG image), `doc_select`, `doc_close`
 - `command_list`, `command_run`, `command_batch` (several commands per call)
+- `jobs_list` (running background jobs with progress, then recently finished ones with their result or error), `jobs_cancel` (one job by id, or every running job)
 - bridge only: `ui_inspect`, `ui_screenshot`, `ui_pointer`, `ui_menu_invoke`, `ui_set`, `control_call`
 
 Claude Code (`.mcp.json` in the repo root, or `claude mcp add`):