4 Commits

Include renames

Author	SHA1	Message	Date
mathiasandClaude Opus 5.5	02cecb25b1	fix(brainfs): bound the read in ReadRegularMax; honest test names (#157) ... Review round 1 on PR #165: - ReadRegularMax checked the size on the opened handle, then read with an unbounded io.ReadAll, so a file growing after the check returned past the limit. The read now goes through io.LimitReader(max+1). A test seam grows the file between the check and the read and counts bytes consumed. - New: ReadScoped returns ErrTooLarge for a note over maxNoteBytes; red if readContained drops the limit. - notes.Target carries the brain root instead of deriving it by TrimSuffix. - Rule 9: reader tests renamed to <Reader>RefusesSymlinksAndSurvivesSwapRaces; ReadNote test has a positive control; brainfstest comment states what the harness observes and what it does not. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>	2026-10-04 00:33:36 +02:00
mathiasandClaude Opus 5.5	b6f7dac46e	fix(brain): context, brain_get and brain_read read through brainfs (#157, slice 2) ... Option 1 of #157, slice 2. readExcerpt (brain_context), api.ReadNote (brain_get / read-after-write) and notes.ReadScoped (brain_read) read the Syncthing-shared brain by path. Under a symlink swap race each leaked an outside file hundreds of thousands of times in 1.5s, including brain_read, whose Lstat check was raced by the reopen-by-name; a FIFO blocked os.ReadFile. - All three read through brainfs (os.Root, regular files only, non-blocking open, type check on the handle). - brainfs.ReadRegularMax checks a size limit on the opened handle; notes keeps its ErrTooLarge. - New internal/brainfs/brainfstest: the shared swap-race harness (symlink and held-writer FIFO swappers, awaited before TempDir cleanup; AssertNoLeak / AssertNoHang) for this and later slices. Tests red first: each reader under a symlink-swap race and a held-writer FIFO race, plus static checks. Flipped: readExcerpt back to os.ReadFile is red. Refs #157 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>	2026-10-04 00:22:47 +02:00
mathias	36a45068ab	feat(mcp): record and alert on a governance-file rewrite (#97) (#98) ... brain_edit_root was gated but unobserved: on success it emitted a slog.Warn and nothing else. That proves a rewrite was allowed, not that one happened — and brain-sync commits it within 15 minutes authored `brain-sync`, so git history cannot tell a CLAUDE.md rewrite apart from routine note traffic. A successful brain_edit_root now emits an ntfy notification and an AuditEntry through the same sink a capture already uses. notes.Result gains PrevContentHash so both ends of the change are identifiable. Path and hashes only in the notification body. Reserved at Internal, not Confidential, because Confidential makes DegradingSink refuse to record while loki is down rather than buffer. Observation is best-effort and never fails the call; a failure to observe logs at ERROR. Ordinary brain_edit on knowledge//wiki/ is deliberately not audited — git history already carries the same before/after bytes with a diff. Closes #97. Co-authored-by: Mathias <mthbqv@gmail.com>	2026-08-22 06:09:53 +00:00
mathias	055af368cd	feat(mcp): brain_read + brain_edit, contained to the sync source (brain#4) (#96) ... brain_read returns a note verbatim; brain_edit is str_replace with an exactly-once match, operating on the tree brain-sync commits from. An adversarial design review before implementation changed three things: 1. Governance files are not in the model-facing tool. Brain content is ingested from the outside world and reaches a model's context, and that model would hold the editor — one poisoned page could rewrite the CLAUDE.md a .dispatch-allow agent later loads as instructions. And brain-sync merges with --strategy-option=ours, so the live tree beats a human's corrective push on the conflicting lines. CLAUDE.md now goes through brain_edit_root: de-surfaced from tools/list and gated on the local static principal. The scopes are disjoint — the privileged door has the smaller reach. 2. Reads needed the same allowlist, and brain_get already lacked it: it returned verbatim session transcripts under archive/ by path. A test proved the exposure live before the fix. 3. Canonicalise before allowlisting — knowledge/../.git/hooks/post-commit would otherwise reach a hook that brain-sync executes in a pod holding the Gitea push credentials. Plus overlapping match counting, UTF-8 validation both ways, refusal while git is mid-operation, flock with the read inside the lock, atomic same-dir rename, and reindex only when frontmatter is touched. Refs brain#4. Co-authored-by: Mathias <mthbqv@gmail.com>	2026-08-18 18:14:05 +00:00