Willow gains OAuth, compose, notifications, and thread/profile views

Willow

Willow went from a read-only timeline viewer to a functional client with authentication, posting, notifications, and profile/thread navigation in 8 commits.

authentication

a0e46a9 added AT Protocol OAuth sign-in alongside the existing app-password flow (+1,733 lines across 17 files) — the largest single commit in the window. The OAuth implementation covers the native-app loopback flow, session persistence, and token management, with app passwords remaining as a fallback for accounts that don't support OAuth.

compose and posting

b22ca9e added post creation (feat(compose): add post creation), and 8f20aeb extended it to support compose for OAuth sessions with hand-rolled facet support (feat(auth): support compose for OAuth sessions with hand-rolled facets). Posts can be created and published with inline formatting.

notifications

499f0a0 added an in-app notifications screen (feat(notifications): add a notifications screen), showing unread notifications with clearing.

thread and profile views

16e5c4a added basic thread and profile views (feat(thread,profile): add basic thread and profile views), completing the core navigation loop — timeline → post → thread → profile → posts.

like/repost and build fixes

33aaf0d wired like/repost actions into the timeline UI and fixed a broken build, completing the engagement loop.