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Review findings from @diegomarino, all verified against the code before changing anything. The reconciliation claim was the serious one. get_account_statement told agents the checks were "the trustworthy part" and returned "the balances read off it" — but nothing reads balances off a document. MetadataDetector never touches them and create_from_prepared_upload! never sets them; they are user-editable fields in the Statement Vault UI. So a statement archived over MCP always came back with an empty check list, which an agent could easily read as "the document agrees with the ledger" when it means "nobody has entered the figures". The description now says so, and the payload carries a reconciliation_note spelling it out for anything reading only the JSON. Also noted that these checks are ledger agreement, not parse integrity: nothing here verifies a document's parts sum to its printed total. Provenance::Citation had two patterns disagreeing about spacing. GRADE_SUFFIX allowed "(grade:A)" but FORMAT required exactly one space, so that citation passed the pre-check and then parsed as ungraded with the grade swallowed into the text — silently discarding the reliability the caller supplied, which is the one thing this parser exists to prevent. list_account_statements downcases content_sha256 before querying. The column is constrained to lowercase hex, so uppercase input could never match, and an agent would read the empty result as "not archived" and upload a duplicate. Its period filters are renamed overlapping_from / overlapping_until, since they match on overlap and the old names claimed otherwise to anyone reading the schema without the descriptions. has_more now explains that there is no cursor and the way forward is a bigger limit or narrower filters. record_valuation no longer overwrites the entry's notes. Re-recording a date would destroy a note a person had written there. Nothing is removed now: an identical citation is a no-op, a changed one is appended, and the trail of what was cited when survives. Detecting "did this tool write that line?" is not possible — almost any prose parses as a valid ungraded citation — so the code does not guess. Minor: accept urlsafe base64 on upload, and explain in the code why record_valuation checks the account ACL rather than the vault manager role, so nobody "tightens" it into the wrong permission later. Tests cover each: the grade-spacing cases both ways, uppercase SHA lookup, overlap window boundaries, note preservation and no-stacking, the unavailable reconciliation note appearing and disappearing, and — per the review — that the download URL's signed id actually expires, rather than trusting the description's claim. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01JFDp9HhXDeswadu4cxFojn
