Show document paths in browser tab titles

[sseungwonnn]

TL;DR

• Browser tabs now show the active path before the project name.
• Contextual titles no longer spend space on the BearDrive suffix.
• History and past-version tabs identify both the path and view.
• Hub and volume titles update through SPA navigation and Back/Forward.

What changed

Added one route-aware title formatter and used it in both HubApp and VolumeApp. Project roots use the project name alone; file, folder, special-view, and past-version routes put the distinguishing route first. Configured branding remains the fallback when no project or volume context is available.

Updated the committed frontend bundle and added unit plus Playwright coverage for exact title formats and browser-history navigation.

Browser preview

Five real Chrome tabs against the seeded hub: project root, two documents, a nested document, and path-scoped History.

Verification

• npm run build
• node --test src/router.test.ts — 24 passed
• npm run e2e -- browse.spec.ts --grep "tab title" — 1 passed
• ./check-dist.sh — internal/webapp/static is fresh

Known test gap

npm test still has one pre-existing date-dependent failure in src/lib/heat.test.ts:258: the fixture uses a fixed August 2026 date while staleNote() reads the real current time.

[ssowonny]

Lgtm!