vvzvlad a945b47749 fix(mcp): verifiable mutation results + refuse formatting edits in edit_page_text ...

edit_page_text reported "success" when asked to change formatting (e.g. remove
strikethrough): the markdown-strip fallback matched the bare text, the replace
preserved marks, and the tool returned success — so the agent believed it had
fixed something that never changed.

Two fixes, both in the shared @docmost/mcp DocmostClient so they reach BOTH the
standalone MCP server and the in-app AI chat (which loads @docmost/mcp):

- Verifiable result for every content mutator: mutatePageContent now computes a
  `verify` change-report (text inserted/deleted, blocks changed, per-mark-type
  delta, integrity/structure delta) via summarizeChange() and returns it on all
  mutators (incl. replaceImage via mutateLiveContentUnlocked). diffDocs is
  text-only, so the mark/structure delta is what surfaces formatting changes.
- edit_page_text hard-refuses formatting edits: applyTextEdits rejects an edit
  whose find/replace differ only in markdown markers (via stripBalancedWrappers,
  which strips balanced wrappers/links without trimming whitespace/emoji, so
  plain-text edits like trailing-space trims, snake_case, math are NOT refused).
  A fully-refused batch errors instead of silently succeeding.

Also updated the model-facing edit_page_text descriptions in BOTH tool layers
(packages/mcp/src/index.ts and ai-chat-tools.service.ts) to drop the misleading
"strip-and-retry tolerated" wording and point formatting changes to patch_node.

New unit tests: test/unit/diff-verify.test.mjs, test/unit/json-edit-refuse.test.mjs.

2026-06-18 05:46:13 +03:00

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