v0.2.28 — onboarding nudge + test coverage

Onboarding nudge + a big test-coverage pass. Early/experimental, macOS only.

Added

• First-run points you at real first value — after setup, the wizard suggests muse browsing sync (seed answers from your Chrome history) and muse demo (a cited example) as next steps; bilingual, opt-in (never auto-run), and drops the browsing hint if you already connected it.

Changed

• ~100 new tests (no source changes) locking in behavior: local tasks/notes providers + weather tool (round-trips, corrupt-store degrade, write-atomicity, injected-fetch degrade paths that never fabricate), and the memory user-store Kysely runtime, file-lock exhaustion, and pattern-detector boundaries. Each mutation-checked.