Add a dedicated top-level Memory Sync settings page consolidating all sync sources, status and settings #3301

Summary

Add a dedicated, top-level Memory Sync page in Settings that is the single, focused home for everything about memory syncing: every connected source/integration listed with its last-synced time, how much is synced, whether it's syncing now, per-source settings, and the opt-in toggle. The existing controls on the Intelligence page stay as a secondary entry point.

Problem

Memory-sync controls today live on the Intelligence page (/intelligence → memory tab, MemoryWorkspace) and in a buried Settings panel: MemoryDataPanel at /settings/memory-data, reachable only via Advanced → Developer Options, which renders the entire MemoryWorkspace (status tiles + sources registry + the memory graph). There's no clean, prominent place a user can go to manage "what syncs, how much, how fresh, and is it running right now." Sync configuration, status, and opt-in are scattered and hard to find.

We want one prominent Settings → Memory Sync page that consolidates this, while leaving the Intelligence-page controls in place too.

Solution (scope: app, mostly reuse)

• New top-level Settings entry — add a prominent "Memory Sync" item to the Settings home (General area), with a new route (e.g. /settings/memory-sync). Retire/redirect the buried Advanced → Memory Data panel to this new page.
  • Wire-up follows the existing pattern: nav item in app/src/components/settings/SettingsHome.tsx (id/title/description/icon/route), route in app/src/pages/Settings.tsx (wrapSettingsPage(<MemorySyncPanel />)), and a 'memory-sync' entry + breadcrumb in app/src/components/settings/hooks/useSettingsNavigation.ts (SettingsRoute union).
• New panel MemorySyncPanel.tsx (app/src/components/settings/panels/) — reuse the already-portable MemorySourcesRegistry and MemoryTreeStatusPanel (both used today in MemoryDataPanel). Compose them into a sync-focused layout without the force-directed graph (that stays on Intelligence). Surface per source:
  • opt-in toggle (enable/disable sync)
  • last synced (relative time) + freshness pill
  • how much is synced (chunk counts) and pending
  • is syncing now state with live progress
  • per-source settings (limits — see Default memory sync sources to on with conservative limits, add per-source settings and an "All In" option #3293) accessible inline
• Intelligence page unchanged — keep its existing memory-sync controls as a secondary entry point; add a link from Intelligence to the new Settings page.
• i18n — all new strings via useT() in en.ts plus real translations in every locale file (settings.memorySync.*, reuse existing memoryTree.* / memorySources.* keys where possible).

Acceptance criteria

• Top-level entry — a "Memory Sync" item appears prominently in Settings (not buried under Advanced) and routes to a dedicated page; the old /settings/memory-data path redirects there.
• Source list with details — the page lists every connected source/integration with opt-in toggle, last-synced time, amount synced (chunks), pending count, and a live "syncing now" indicator.
• Per-source settings inline — per-source sync settings/limits are viewable and editable from this page (builds on Default memory sync sources to on with conservative limits, add per-source settings and an "All In" option #3293).
• Opt-in from one place — a user can enable/disable any source's sync entirely from this page.
• Intelligence preserved — existing Intelligence-page sync controls remain functional; a link to the new Settings page is present.
• i18n — all new strings go through useT() and exist in every locale with real translations (pnpm i18n:check + pnpm i18n:english:check pass).
• Diff coverage ≥ 80% — the implementing PR meets the changed-lines coverage gate.

Related

• Settings wiring: app/src/pages/Settings.tsx, app/src/components/settings/SettingsHome.tsx, SettingsSectionPage.tsx, hooks/useSettingsNavigation.ts
• Existing (buried) panel: app/src/components/settings/panels/MemoryDataPanel.tsx
• Reused components: app/src/components/intelligence/MemorySourcesRegistry.tsx, MemoryTreeStatusPanel.tsx, MemoryWorkspace.tsx
• Builds on Default memory sync sources to on with conservative limits, add per-source settings and an "All In" option #3293 (per-source settings + All In). Sync-status accuracy depends on Per-source memory sync indicators and live syncing/synced counters are unreliable #3295. Pairs with the configurable sync-interval issue (filed separately).