Terminal M0: libghostty-vt core, PTY, view, AOT self-test - #1

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…erlay

- tools/terminal/ghostty_bindgen.py generates all structs/enums from
  ghostty_type_json() (explicit layouts) and all 202 functions from the headers;
  replaces the hand-written M0 subset. Layout/enum tests compare every generated
  type with the manifest on each RID.
- FrameCapturer: 8-byte packed cells, per-row style tables, grapheme clusters,
  row ids/versions/content hashes, dirty-row capture with row sharing.
- Differential test (incremental vs full rebuild) found two upstream missed-dirty
  bugs; overlay O5 marks rows dirty when semantic_prompt or wrap flags change.
- TerminalView renders from the packed snapshot (palette resolved in the view).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…re O5 fixes

- TerminalCore installs all libghostty callbacks: title, pwd, bell, clipboard
  write / deferred read (O3, CompleteClipboardRead), notifications, progress,
  OSC 133 semantic prompts, render hold, reset, unknown OSC (633).
- DA1/DA2/DA3, XTVERSION, XTWINOPS sizes, 2048 and 996 are answered by the core
  from its own state (10 §2); SetDefaultColors, Clear (⌘K), width policy (2027
  default), terminfo name, title report off.
- CommandTracker: OSC 133 / 633 (nonce-checked) command records with tracked
  anchors and output reading via select_output.
- Differential test fixes: C# \x escapes in fragments; O5 now also marks the
  previous row dirty when a stale spacer_head is cleared (450k-step sweep clean).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

- InputModes read from the core after each write batch (DECCKM, keypad, 1035/1036,
  DECBKM, modifyOtherKeys via O4, kitty flags, mouse tracking/format, 2004, 1004,
  2027, 9001 via O1, cursor-at-prompt); InputModes.Defaults matches terminal reset.
- InputEncoder (UI thread, not bound to a terminal): legacy/kitty key encoding,
  mouse encoding with geometry, focus reports, macOS option-as-alt.
- TerminalCore.EncodePaste with a write_pty capture scope (bracketed paste, unsafe
  paste requires confirmation); PasteEncoder for terminal-less encoding.
- Bindgen emits public enums (TerminalKey) into TCode.Terminal.Core.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…ames

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…lp32, PTY stress tests

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…), fuzz corpus + generator, esctest2 driver

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…r late exits; GC before counting handles in stress tests

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…d-pool growth is not a leak)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…ion actors, output log, flow control, attach/resume

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…iod, signals, host log

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…ack), periodic save, onQuit modes, SIGTERM save

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…docs: M2 status

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

…host

- Desktop references Terminal.Avalonia / Protocol; pty host copied to ptyhost/ and AOT-published with the app
- PtyHostService (discover/start/configure), TerminalSession (UI-side core on one worker, coalesced frames, ack after batch, resize via record)
- TerminalTabViewModel / TerminalTabView: lifecycle (restart on exit or host loss), keys, text, paste (unsafe refused), copy, select, wheel, links
- TerminalView input events and key mapping (unit-tested)
- Fix: tcode-pty-spawn rejected argv0-only launches (argc < 5), found by AOT smoke
- Fix: host starts the output pump after the create response is queued (exit notifications were dropped on fast exits)
- Smoke: terminal step in TCode --smoke (AOT host, real shell output)

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

…ree on Linux CI, exit 139); drop the Desktop test CI step until StreamMark packages are part of CI

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

…s lost when the writer had dequeued it but not yet written)

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

…se confirmation bars

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

…) applies at its exact position; fixes the chunk-boundary flake in DECSET_DECAWM_NoLineWrapOnTabWithLeftRightMargin (10/10 after, 1 failure in 3 before)

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

- TerminalSession: search entry points on the UI-side worker (set/step/close)
- TerminalTabViewModel: open/close, count (SelectedIndex counts from the newest match; verified by test), Enter/Shift+Enter/Esc
- TerminalTabView: floating bar; focus moves to the search box and back
- TerminalCore.ActiveSearch made public

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>