Agents can attach a suggested replacement when creating an inline comment, via
both the MCP create_comment tool and the AI-chat createComment tool.
Because applying a suggestion edits the EXACT anchored text, an ambiguous anchor
would let Apply corrupt the wrong occurrence. So when suggestedText is set the
selection must occur EXACTLY ONCE:
- new countAnchorMatches(doc, selection) counts occurrences across all blocks
(same normalization/traversal as canAnchorInDoc), counting occurrences (2 in
one block => 2) — stricter than block-count, never under-counting distinct
occurrences (false-unique is the dangerous direction).
- client.createComment gains suggestedText: a pre-check (getPageJson +
countAnchorMatches: 0 => not-found, >=2 => ambiguity error) before create, and
an AUTHORITATIVE live check inside the anchoring mutation that recomputes on the
live doc and, if != 1, aborts and rolls back the just-created comment (reusing
the existing safeDeleteComment "anchor not found" path). Ordinary comments keep
first-occurrence behavior unchanged.
- suggestedText is rejected on a reply or without selection in all three layers
(MCP handler, MCP client, AI-chat tool), mirroring the server DTO/service.
- filterComment surfaces suggestedText/suggestionAppliedAt/suggestionAppliedById.
- DocmostClientLike.createComment signature updated. MCP build/ rebuilt.
Tests: countAnchorMatches (0/1/N, within/across/nested block, span nodes,
quote normalization); createComment (ambiguous refused pre-create, reply and
no-selection rejected, unique succeeds and forwards suggestedText, filterComment
surfaces it); ai-chat schema accepts suggestedText. MCP 443 pass; ai-chat 601 pass.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
claude code agent 227
cd539558ed