PR 3 of the schedule-types feature — see
``memory/project_auto_sync_schedule_types.md``. Backend
``next_run_at`` + ``weekly_time`` trigger handler landed in PRs 1-2.
This PR exposes them in the Auto-Sync manager so users can finally
schedule playlists by day-of-week + time instead of only hourly
intervals.
**UI layout:**
The Auto-Sync modal grows a ``Weekly Board`` tab between
``Hourly Board`` (renamed from ``Schedule Board``) and
``Automation Pipelines``. Same sidebar (mirrored playlists grouped
by source, with filter). Main panel is 7 day columns Mon-Sun
instead of 10 hour buckets. Drag a playlist onto a day column →
creates a single-day weekly schedule at the default time
(09:00 in the browser's IANA tz from
``Intl.DateTimeFormat().resolvedOptions().timeZone``). Click any
scheduled card → opens an editor popover for time, multi-day
toggles, tz override, and unschedule.
Multi-day schedules render under every matching column (Mon-Wed-Fri
schedule appears as three cards, one per column) — matches how
users think about "this playlist runs on Mon AND Wed AND Fri".
**Mutual exclusion:** one schedule per playlist. The save path on
either tab deletes any existing schedule of the OTHER kind before
installing the new one. Backend can technically run both as two
separate automation rows, but two cards under the same playlist
would surprise users and the engine has no merge semantic for
"daily-and-hourly".
**Pure-function helpers** (testable via node:test, matching the
existing ``tests/static/test_auto_sync.mjs`` pattern):
- ``detectBrowserTimezone()`` — Intl tz with UTC fallback for
browsers where Intl is absent.
- ``autoSyncWeeklyTrigger({time, days, tz})`` — defensive payload
builder: garbage time → 09:00, unrecognised days dropped,
missing tz → browser tz.
- ``autoSyncWeeklyFromTrigger(config)`` — inverse parser with
the same defensive shape. Empty days expands to every weekday
(matches ``next_run_at`` engine semantic). Returns null for
non-object configs so ``buildAutoSyncScheduleState`` can route
broken rows to automationPipelines instead of silently
bucketing them as every-day weekly.
- ``autoSyncWeeklyLabel(parsed)`` — sorted "Mon, Wed, Fri @
09:00" / collapses to "Daily @ HH:MM" for full-week / "Unscheduled"
for null. Canonical Mon-Sun ordering regardless of input order.
**Tests:** 26 new node:test cases across ``detectBrowserTimezone``
x1, ``autoSyncWeeklyTrigger`` x6, ``autoSyncWeeklyFromTrigger`` x6,
``autoSyncWeeklyLabel`` x5, and ``buildAutoSyncScheduleState``
weekly bucketing x5 (covering owned weekly_time → weeklySchedules,
hourly stays in playlistSchedules, non-owned falls through to
automationPipelines, legacy-named auto-sync rows still recognised,
garbage trigger_config falls through). All 62 node:test cases pass;
261 across the automation pytest suite still green (zero regression
on PRs 1-2's plumbing). Python wrapper at
``tests/test_auto_sync_js.py`` shells out cleanly.
**CSS** (themed to the existing Auto-Sync gradient + accent
variables):
- 7-column grid for the weekly board, narrower than the 10
hour-bucket layout.
- Editor popover with backdrop-blur, accent-tinted save / delete
buttons, hover states that pick up the user's accent color.
- ``scheduled-elsewhere`` state for playlists with an hourly
schedule visible on the weekly board (dashed border + opacity)
so the user knows a drop will replace, not stack.
**WHATS_NEW entry** under 2.6.3 unreleased — first user-visible
slice of the schedule-types feature.
PR 4 (Monthly UI tab) deferred until weekly proves wanted.
698c21c3ce