Two improvements to browse's preview-markdown plugin so it can replace
the standalone mdedit tool:
1. **YAML front-matter editing.** The FM pane above the outline used to
render a read-only <dl> of parsed keys — sparse and unusable when
the file had no envelope yet. It's now a dedicated <textarea> that's
always present. On load, parseFrontMatter() splits the `---\n…\n---`
envelope off the body: the body feeds Toast UI Editor, the envelope
feeds the textarea. On save, assembleContent() recombines them.
Dirty tracking covers both halves via a SHA-256 of the assembled
bytes. The shell mirrors mdedit's old layout (FM textarea top,
outline below) but the FM pane is now always functional, eliminating
the "empty pane over the TOC" problem.
2. **Download as DOCX / HTML / PDF.** When the file handle is HTTP-
backed (server mode) and the file is a .md, three buttons appear in
the info header next to Save. Clicking one fetches the server's
?convert=<fmt> endpoint and triggers a browser download with a
clean filename (foo.md → foo.docx). Auto-saves the buffer first if
dirty so the converted bytes reflect what's on screen.
Helper at window.zddc.source.downloadConverted (shared/zddc-source.js)
so other tools — archive, transmittal — can reuse the same flow later.
Friendly error messages map HTTP 503 / 422 / 504 to actionable toasts.
Implements the reviewing/ aggregator described in the saved
project memory (~/.claude/projects/-home-user-src-zddc/memory/
project_reviewing_folder_design.md). reviewing/ stays in
VirtualOnlyCanonicalNames — never materialised on disk — and is
served as a join over archive/<party>/received/, archive/<party>/
issued/, and staging/, recomputed on every read.
Two depths, both trailing-slash:
GET <project>/reviewing/?json=1
→ array of virtual <tracking>/ entries, one per submittal in
archive/<party>/received/ that doesn't yet have a matching
archive/<party>/issued/ entry. Sorted by tracking. URLs stay
under reviewing/ so the user can drill into the per-submittal
view. ACL: per-party, filtered like fs.ListDirectory.
GET <project>/reviewing/<tracking>/?json=1
→ array of two virtual entries, received/ + staged/, with
canonical URLs pointing back to archive/<party>/received/...
and staging/... respectively. staged/ is omitted when no
response draft exists yet.
When the response moves staging/ → archive/<party>/issued/, the
entry vanishes from depth-0 on the next listing. No mutation of
the reviewing/ subtree itself; pure join, recomputed on read.
Front-end at <project>/reviewing[/<tracking>/] is mdedit (per
user request). DefaultAppAt + AppAvailableAt extended to recognise
"reviewing" as a canonical mdedit-bearing folder. The polyfill in
shared/zddc-source.js is updated to follow listing entries' explicit
url field when present (absolute or root-relative) — that's how
mdedit's tree follows the depth-1 received/ + staged/ links into
the canonical archive/staging subtrees.
Dispatcher routing in zddc-server/main.go:
- GET <project>/reviewing/[<tracking>/] with Accept: json
→ ServeReviewing
- GET <project>/reviewing/[<tracking>/] with Accept: html
→ mdedit (rooted at the virtual path; polyfill fetches the
JSON listing on its own)
- GET <project>/reviewing (no slash) → mdedit (via DefaultAppAt)
- GET <project>/reviewing/<tracking> (no slash) → 301 to slash form
Tests:
- handler/reviewinghandler_test.go (6 cases): IsReviewingPath
classification + ServeReviewing depth-0/depth-1 with and without
staged drafts + 404 on unknown tracking + empty when archive/ is
absent.
- apps/availability_test.go updated: reviewing/ now expects mdedit
rather than "" (no default).
- cmd/zddc-server/main_test.go: TestDispatchEmptyCanonicalProjectFolders
extended to assert reviewing → mdedit at the no-slash form;
older "no-slash/reviewing → 301" test removed.
Future work (not in this commit): write translation. Editing a file
under reviewing/<tracking>/staged/<f>.md works today because the
polyfill rewrites to /<project>/staging/<response>/<f>.md before
fetching — the user's URL bar moves to the canonical path on click.
A virtual-filesystem mode where the URL bar stays under reviewing/
throughout would require server-side write rewriting (translate
PUT/DELETE on reviewing/.../staged/... into the canonical staging/
path). Not needed for the MVP — links in mdedit's tree work.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Replaces the binary acl.allow/deny model with five permission verbs
(r/w/c/d/a) and first-class roles, and adds an authenticated file API
(PUT/DELETE/POST move/mkdir) so the HTML tools can edit-in-place over
HTTP. Closes the AC-3(7) and AC-6 federal-readiness gaps.
File API (zddc/internal/handler/fileapi.go)
- PUT <new> → action c
- PUT <existing> → action w
- PUT <.zddc> → action a (CanEditZddc strict-ancestor rule)
- DELETE → action d
- POST mkdir → action c (auto-writes creator-owned .zddc when the
parent is Incoming/Working/Staging)
- POST move → action w on src + c on dst, atomic via os.Rename
- Optional If-Match for optimistic concurrency, --max-write-bytes cap,
audit log emits a structured file_write event per operation.
Permission model (zddc/internal/zddc/{acl,file,roles,cascade_mode}.go)
- acl.permissions: { principal → verb-set } map; principals are email
patterns or role names. Empty verb set is an explicit deny.
- roles: { name → members } definitions, available at the level they
declare and all descendants. Closer-to-leaf shadows ancestor.
- Legacy acl.allow/deny still work; they fold into permissions at
parse time (allow → "rwcd", deny → "").
- Cascade walks leaf→root; first level with any matching entry wins;
the union of matching verb sets at that level decides.
- --cascade-mode=strict adds a root→leaf ancestor-deny pre-pass so an
ancestor explicit-deny is absolute (NIST AC-6). Default delegated
preserves the existing commercial behavior.
Special folders (zddc/internal/zddc/special.go)
- Incoming / Working / Staging: mkdir auto-writes a .zddc into the new
subdir granting created_by + that email rwcda directly. Same form
operators write by hand; creator can edit it later to add others.
- Issued / Received: server-enforced WORM split. Cascade grants
inherited from above the WORM folder are masked to r only; grants
placed at-or-below the WORM folder retain r,c. Operators grant
write-once (cr) to the doc controller via an explicit .zddc at the
Issued/Received folder. Admins exempt — only escape hatch.
Browser polyfill (shared/zddc-source.js)
- HttpDirectoryHandle + HttpFileHandle implement the FS Access API
surface (values, getFileHandle, createWritable, removeEntry,
queryPermission/requestPermission) over zddc-server's listing JSON
and file API. Existing tools written against showDirectoryPicker
work unchanged.
- detectServerRoot() returns { handle, status }: tools auto-load on
HTTP, surface a clear "no permission to list" message on 403, and
fall back to the welcome screen on 0.
- classifier renames take the atomic POST move path on HTTP-backed
handles; mdedit and transmittal route reads/writes through the
polyfill so prior FS-API code paths cover both modes.
Tests
- zddc/internal/zddc/{cascade_mode,roles,special,acl}_test.go cover
delegated vs strict, role membership / shadowing / legacy fallback,
WORM split semantics, verb-set parser round-trip.
- zddc/internal/handler/fileapi_test.go now also covers role-based
vendor scenarios, WORM blocking vendor & doc controller writes,
explicit Issued .zddc unlocking the cr drop-box, admin bypass,
auto-ownership on mkdir, and strict-mode lockouts.
Docs
- ARCHITECTURE.md + zddc/README.md document the verb model, role
syntax, special-folder behaviors, cascade-mode flag, and full file
API surface. Federal-readiness gap analysis strikes AC-3(7) and
AC-6.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
