feat(ui): share adapter-neutral conversation presentation

[luokerenx4]

Summary

Align the ongoing browser conversation with the existing launch composer and establish an adapter-neutral presentation boundary. Pi is the only live adapter in this change.

Included increments

• Shared ComposerShell for launch and conversation pages; consistent 46rem reading measure and circular primary action.
• Prop-driven ConversationView, normalized content/activity types, and shared Markdown/tool/reasoning/unknown-payload rendering.
• Pi-only wire conversion and polling/commands in webpi-presentation and useWebPiConversation.
• Supported actions supplied as callbacks, no invented controls; preserved errors, stop, compaction, IME, draft recovery, and reader-controlled scrolling.
• Pending request guard and keyed session isolation; non-Pi presentation fixture proves no Pi event schema is required by the shared view.

Design decision

Share presentation, not execution protocols or persisted messages. The launch page retains its runtime/credential selectors in slots. Existing-session settings remain in Settings rather than adding unsupported inline model or attachment actions. Remove permanent Idle/WebPi chrome from the top bar; keep active/failure state visible. Narrow layouts preserve composer width and local output scrolling. Native disclosure, keyboard focus and reduced motion are retained.

Verification

• pnpm test:owner:ui: 290 files / 1759 tests passed.
• Final focused regression rerun: 3 files / 13 tests passed, including late previous-session responses, non-Pi rendering, duplicate submission, failure draft preservation, unsupported actions, compaction and IME.
• pnpm exec tsc -b ui: passed.
• git diff --check: passed.
• Real isolated-development browser route: existing Pi conversation rendered, launch page regression checked, 1280px screenshot inspected, 390px DOM geometry verified without horizontal overflow.
• pnpm electron:smoke:workspace: unsigned packaged app passed isolated CLI/PTY/tool-socket and managed Pi side-effect acceptance, cleanup complete. This verifies the packaged runtime baseline, not a visual WebPi send/stop walkthrough inside Electron.

Boundary touch

UI presentation and UI polling lifecycle only. No backend protocol, credential, trading, persistence, dependency or runtime-retention change. No new adapter integration. Browser acceptance did not send prompts to the user's existing sessions.

Acceptance

Draft for maintainer visual review; not merge authorization. Follow-up adapters can reuse these components by normalizing their content and supplying supported operations.

Sidebar selection follow-up

• Expanded navigation highlights only the selected Session, not its Harness header. The compact rail retains Harness location; landing selects the header.
• 44 targeted Chat/Auto Quant navigation tests and UI typecheck passed; real Pi route verified with only the Session marked aria-current.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
openalice-demo	Ready	Preview	Sep 5, 2026 7:44pm UTC