weishu a4355d1837 feat(ios): read-only chat assembly (A-M2f) ...

Wires the merged M2 pieces into a usable pair -> list -> live chat flow:

- pbxproj: link HapiUI into the app target (UUIDs C7/C8, mirroring the
  existing HapiProtocol/HapiClient product references; only project change).
- HubSession: MessageWindowControllers registry + per-chat ChatSession
  factory with in-memory per-session SSE resume cursors and scene-phase
  forwarding to the active chat.
- ChatSession (app): session-scope SSEClient while the chat is open;
  window opened/activated before subscribing; a single consume task awaits
  every event into the window actor, giving Android-channel-equivalent
  arrival-order ingestion; session-updated and friends route through the
  shared SyncEventRouter (detail patching), session-removed clears the
  window, a gap handshake triggers full resync + detail refetch + catch-up
  tail sync; stop hands the cursor back for seamless reopen.
- ChatPipeline (HapiClient): actor running the reduction path off-main -
  queued-row filter, normalization memoized by row instance identity,
  reduce + buildVisibleChatBlocks with previousGroups-stable group ids.
- ChatModel: window state + detail agentState + machine labels -> serial
  ~100 ms-coalesced pipeline loop (first run immediate, publishes strictly
  ordered), header title cascade, loading/empty/error states, loadOlder /
  retry, last-seen stamping on every update.
- ChatView: bottom-anchored ScrollView/LazyVStack (defaultScrollAnchor +
  scrollPosition(id:)), auto-stick at bottom, new-messages pill, top
  sentinel paging with documented scroll re-anchoring, degraded banners.
- Block views: user bubble w/ attachment chips, agent markdown, collapsed
  reasoning, tool cards (knownTools.tsx-parity presentation, status chip,
  read-only permission row w/ pending banner, per-tool bodies: terminal,
  before/after edits, write content, unified-diff detection -> DiffTextView,
  checklists, read-only questions, pretty-JSON fallback, children rail),
  tool groups, centered event rows (presentation.ts port), cli output,
  generated images (authed bytes + in-memory cache + full-screen viewer),
  codex review verdict card.
- Navigation/links: session list now pushes ChatView; app-level
  \.hapiOpenURL handler (https/http -> SFSafariViewController, custom
  schemes confirm first, hapi-file:// -> M4 placeholder) + theme injection.
- Tests: ChatPipelineTests drive the runner with fixture-derived windows
  (stable ids, memo-stable recomputes, queued filter, group-id stability
  across an older-page arrival).
- README: M2f app-layer description.

2026-08-17 20:55:36 +08:00

..

ChatPipeline.swift

feat(ios): read-only chat assembly (A-M2f)

2026-08-17 20:55:36 +08:00