Three more git-sync QA defects from the 2nd live pass on PR #119, plus a
callout-fidelity nit:
1. SPURIOUS conflict leaked raw markers into canonical main (root cause). On an
ordinary round-trip the only difference between the docmost mirror (normalize-
on-write) and a user's raw push is trailing/empty-line normalization, which made
git's line-based docmost->main merge CONFLICT, and the wedge fix then committed
the file WITH literal <<<<<<< / ======= / >>>>>>> markers onto main (git and the
DB silently diverged for cycles). Fix: on a conflict, normalize trailing/empty
lines on BOTH sides (showStage :2:/:3:) before comparing — a trailing-only diff
is recognized as spurious and resolved to the clean normalized form. A GENUINE
same-block conflict is auto-resolved to OURS (git wins, mirroring the live-doc
3-way rule); the docmost side stays on the `docmost` branch + page history. Raw
markers NEVER reach main again.
2. Concurrent UI<->git edit silently lost the UI side. The git->Docmost 3-way merge
ran against a live Y.Doc that hadn't yet received the user's debounced in-flight
edit, so git clean-applied (no conflict detected) and the edit vanished even on a
different block. Fix: flush the pending debounced store before the merge so the
in-flight edit is drained into the live doc first — a different-block edit is
merged, a same-block one is detected and pinned to history (recoverable).
3. Smart-HTTP HEAD flapped to the read-only `docmost` mirror (~1/4 of clones). The
engine transiently checks out `docmost` mid-pull and the host advertises whatever
HEAD resolves to. Fix: VaultGit.pinHeadToMain(); the cycle restores HEAD->main in
a finally; and the upload-pack ref advertisement is served HEAD-pinned under the
per-space lock so it can never observe a mid-cycle HEAD.
4. (callout) clampCalloutType now mirrors the editor's GITHUB_ALERT_TYPE_MAP for
non-schema aliases (tip->success, caution->danger, important->info) instead of
flatly collapsing to info. The editor schema genuinely supports only the six
banner types, so unknown types still fall back to info (by design).
Tests: deterministic real-git trailing-blank round-trip (no conflict, no markers,
in sync over 2 cycles) + genuine-conflict no-marker-leak; HEAD advertisement
stability; pre/post-flush concurrent-edit survival; serveReadAdvertisement lock
pin; widened callout-alias coverage. Engine vitest + server tsc + collaboration /
git-http / orchestrator specs all green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Blocking (review id 2514):
- [security] Forbid symlinks in vaults. ensureServable now sets
core.symlinks=false in each vault's local git config (a pushed symlink is
checked out as a plain file, never a real link), and the engine cycle wraps
every read/write/mkdir in an lstat/realpath guard (new path-guard.ts) that
refuses a path that is — or traverses — a symlink, or whose realpath escapes
the vault root. Prevents a writer from publishing /etc/passwd or the server
.env, or writing outside the vault. Adds unit tests (path-guard.test.ts) +
a read-guard integration test (cycle.test.ts) + real lstat/realpath in the
roundtrip integration test.
- [simplification] Delete dead lib/diff.ts + test/diff.test.ts and drop the
now-unused @fellow/prosemirror-recreate-transform dependency.
- [documentation] Add a CHANGELOG [Unreleased] → Added entry for git-sync.
Warnings:
- [test-coverage] Cover the CREATE-branch conflict-markers guard (a new .md with
markers and no gitmost_id is recorded as a create failure, never created).
Suggestions:
- [stability] Bound each `git config` in ensureServable with a timeout.
- [authz] Trigger endpoint resolves spaceId workspace-scoped and 404s a foreign
space before any vault directory is created.
- [stability] Attribute git-initiated moves to the service account
(lastUpdatedById), via an optional actor param on PageService.movePage.
- [documentation] Document the per-space autoMergeConflicts toggle in AGENTS.md.
- [test-coverage] Cover the unterminated `:::` callout fence fallback.
- [simplification] Move test-only roundtrip-helpers.ts out of src/ into test/.
Architecture:
- Move the Yjs/ProseMirror merge primitives (yjs-body-merge, three-way-merge,
lcs + specs) into collaboration/merge/, breaking the collaboration →
integrations/git-sync dependency cycle this PR introduced.
- Port the schema-surface drift gate to packages/mcp (the mcp schema mirror had
none); pins 52 entries.
Deferred (with rationale in the review thread): the incremental-pull perf
warning (correctness-neutral; needs a high-water-mark design + its own tests on
the data-loss-critical path) and the redis-sync rolling-deploy mixed-version
edge (the deficient behavior is in already-released old-instance code; the new
code is correct on both sides; impact is a transient rollout-window artifact).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Callouts now export as Obsidian's blockquote-callout syntax — `> [!type]` opener
plus a `>`-prefixed body — so they render as real callouts when the vault is
opened in Obsidian, instead of `:::type` (Docusaurus-style) which Obsidian shows
as a plain blockquote.
- Export (markdown-converter `case "callout"`): `> [!type]` + each body line
blockquote-prefixed (a blank line becomes a bare `>` so the callout is not
split). Nested callouts naturally become `> > [!type]`.
- Import (preprocessCallouts): a new branch recognizes `> [!type]` openers and
the contiguous `>`-prefixed body, strips one blockquote level and recurses (so
nested callouts work), emitting the same callout div the `:::` path produces.
The legacy `:::type` parser is KEPT so existing vaults keep importing. A plain
blockquote (no `[!type]`) stays a blockquote.
Tests: 4 converter golden tests updated to the new `> [!type]` output; 4 new
import tests (simple, nested, round-trip, plain-blockquote-untouched). The §13.1
gate still round-trips callout losslessly through the real server schema.
git-sync vitest 675 (+1 expected-fail), gate 27.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Coder↔reviewer design loop (9 rounds, reviewer verdict: exhaustive) produced
92 specs; implemented +123 tests (465 -> 588 passing). The new round-trip
coverage exposed three genuine data-loss bugs in the Markdown<->ProseMirror
converter, all now FIXED (round-trip is lossless for these):
1. pageBreak was lost on export (no converter case -> rendered to "" and the
node vanished). Now emits <div data-type="pageBreak"></div>, which the schema
parses back -> round-trips.
2. A block image between blocks left an empty <p> artifact after import-hoisting,
producing a phantom blank-gap diff on every sync. markdownToProseMirror now
strips content-less paragraphs after generateJSON — with a schema-validity
guard that keeps the obligatory single empty paragraph in `content: "block+"`
containers (tableCell/tableHeader/blockquote/column/callout/doc), so empty
cells/quotes never become an invalid `content: []`.
3. The `code` mark combined with another mark was not byte-stable (emitted nested
HTML that the schema's `code` `excludes:"_"` collapsed on import). The
converter now emits code-only when `code` co-occurs, matching the editor.
New coverage spans media/diagram/details/columns/math/mention attribute
round-trips, converter emission branches, git error paths, and engine decision
branches. A dedicated test pins the empty-container schema validity (the review
catch on the bug-2 fix).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
