The close frame was sent on every unmount, so switching conversations (or
refreshing) killed the shell even though the tab was still open; coming
back spawned a fresh terminal. Now the unmount close frame only fires when
the tab is truly gone (checked against the per-session store state), so a
bare unmount hands the process to the host's reconnect grace and the next
connect reattaches the SAME shell with its transcript. Closing a tab
releases the quota immediately: the socket-open path keeps the close
frame, and a new pty.close API covers the socket-down (reconnect loop)
case that previously left a 30s zombie holding the quota.
The host also records the spawn cwd and respawns when a reconnect carries
a different authoritative cwd — the page-load hydrate race can attach the
real session cwd after the first connect fell back to the process cwd, and
a shell in the wrong directory must not linger.
- The per-session terminal quota counted exited zombie handles (shells
closed or dropped on hosts without the close-frame protocol), so enough
abandoned terminals permanently blocked new ones — the 'disconnected,
reconnecting' loop. open() now sweeps the session's exited handles before
the quota check, and the running instance's leftovers disappear on the
next restart (disposeAll).
- Dragging a tab onto the strip's background fired the drop TWICE: the
TabBar handled it (merge into this pane) and the event bubbled to the
pane root, which ran its edge-zone handler again — producing two splits /
a duplicated instance (up+down). The strip now stops propagation for
drag-over and drop.
- Tests: +1 real-pty smoke (exited handle swept, new tab spawns under a
quota of 1).
- Terminals were never destroyed when their tab closed (socket drop only
detached listeners), so the per-session quota (3) filled up and new
terminals failed to mount with 'terminal limit reached'. Now the client
sends a {type:'close'} control frame on tab teardown and the host releases
the pty immediately; a bare socket drop (refresh/switch) keeps the process
for a 30s grace period, and a reconnect within it cancels the pending
close. open() also respawns a process whose shell already exited instead
of reusing a dead handle (input sink).
- The sidebar portal renders inside an error boundary: a render failure now
shows a dismissible error strip with the message (console.error with the
component stack) instead of a silent blank panel.
- Tests: +2 real-pty smoke specs (close releases quota + respawn after
exit; reconnect cancels pending close).
- Root cause of the endless 'disconnected, reconnecting' banner: pnpm
strips the executable bit from node-pty's prebuilt spawn-helper, so every
spawn failed with posix_spawnp failed and the client retried forever.
ensureSpawnHelper() restores 0755 at plugin activation (mirrors
dsh-pty-local's postinstall; works for link installs too). Verified
against the live GUI: terminal now connects and echoes.
- TerminalView stops auto-reconnecting on a server refusal (close 1011 with
a reason): shows the reason plus a manual retry instead of spinning.
- defaultShell() also guards an empty SHELL.
- New sessions open at half the viewport width; width clamping now allows
filling the window, and a header fullscreen button expands the sidebar to
the full viewport (toggle restores half).
- Middle-click on a tab closes it (auxclick button 1, autoscroll
suppressed).
- Tests: +2 (shell fallback, spawn-helper exec bit idempotent).
Host half (src/index.ts): /sidebar/api JSON API (session cwd, fs tree/read/
write, git status/diff/stage/commit/branch/log/show), /sidebar/file media
route, /sidebar/ws/terminal WebSocket over node-pty; routes share the /api
trust fence (Host-header loopback or connection.trustedHosts).
Client half (src/client): portal-mounted right panel with a per-session
split-pane workbench (recursive row/col splits, draggable dividers, tab
drag-move), tab bar with max-width 160px + plus-menu (explorer/git/terminal
multi-open rules), lazy file explorer rooted at the session cwd, editable
text editor (dirty dot, Ctrl/Cmd+S), image + Markdown preview, xterm
terminal with reconnect, and a VSCode-style git panel. Per-session state
persists to localStorage (dsh-sidebar:v1:<sessionId>). Intercepts the chat
turn-tail produced-files row (priority -1 chain entry) to open files in the
sidebar. UI styled with the dsh --dsw-* theme tokens and ui-primitives.
Build: tsdown emits the host lib plus the __ModuleLoader__ client bundle
(externals = module table words; xterm/css inlined). Tests: 19 unit + smoke
specs (pure state/tree/git parsers + real git/fs integration).
Menghuan1918