* refactor(terminal): per-client zellij attach replaces shared PTY + replay ring
Each WebSocket client that opens a pane now gets its own `zellij attach`
PTY (attachment.go) instead of sharing one PTY whose output was replayed
from a bounded byte ring. Zellij answers every fresh attach with its full
init handshake (alt screen, SGR mouse tracking, bracketed paste) and a
faithful repaint — the ring replay lost exactly that handshake, leaving
late subscribers without mouse reporting (dead wheel scroll). The cost is
one zellij client process per open pane per connection, which the zellij
server is built for (yyork ships the same model).
ring.go and session.go (fan-out, replay buffer) are deleted; manager.go
now tracks per-client attachments with liveness gating, and pty_unix.go
answers every resize frame with an explicit SIGWINCH.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(renderer): re-assert settled terminal resize; align docs with per-client attach
After each debounced resize settles, send one follow-up resize frame with
the same grid (RESIZE_REASSERT_MS). xterm only fires onResize on actual
grid changes, so a resize update the zellij client loses (raced mid-attach
or coalesced during a drag) would otherwise desync the session layout from
the pane until the next real change. The backend answers every resize
frame with an explicit SIGWINCH, so the re-assert is a no-op when already
in sync.
Comments in the terminal hook/components now describe the per-client
attach model (fresh server-side `zellij attach` per open, no replay ring).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Add internal/terminal: a transport-agnostic feature package that attaches
a PTY to a session's tmux pane and multiplexes the byte stream to WebSocket
clients, plus a session-state channel fed by the CDC broadcaster.
The PTY is reached through a small PTYSource interface (satisfied by the
tmux runtime adapter) and spawned via an injectable spawnFunc, so fan-out,
the 50KB replay ring, and re-attach resilience all test without a real
process, tmux, or network. A tmux-guarded integration test exercises the
real creack/pty path end-to-end.
Raw PTY bytes never touch the CDC change_log; only the sessions channel is
CDC-fed. Windows PTY spawning is stubbed pending a ConPTY path.
yyovil
prateek
Pritom14