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feat(tiles): Attach overlay for a tile whose session is not attached or has exited

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A tile has no live terminal when its session has no PTY attached (pid null,
e.g. restored after a server restart), when the agent exited in a live pane
(paneExit), or when the server closed the tile's socket because the session
exited (4009, which used to leave only the "session ended" marker). Its body
now says which, with an Attach button, in an overlay laid over the terminal
so the body and its xterm keep their size.

Attach is the single view's own re-attach: POST /interactive (or /shell for a
shell) with NO body, at most one in flight per session, since the route has
no in-flight guard of its own. A tripped PTY-exit breaker goes through the
same confirm before clearBreaker: true, and nothing automatic ever sends it.
On success the tile is remounted onto the new pane (a socket stopped for good
cannot reconnect), keeping the keyboard if it had it; the overlay stays away
while the server catches up, and a failed attach says so and keeps it.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Codeman maintainer
2026-10-06 17:51:47 +02:00
parent 6fedbd1b09
commit de1b48a63f
4 changed files with 370 additions and 12 deletions
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src/web/public/styles.css
+36
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@@ -19527,6 +19527,42 @@ html[data-session-list="sidebar"][data-sidebar="collapsed"] .btn-sidebar-toggle
box-shadow: inset 0 -2px 0 color-mix(in srgb, var(--accent, #4a9eff) 60%, transparent);
}
/* The Attach overlay: a tile whose session has no PTY attached, or whose
agent exited. Absolute over the body, so the body and its xterm keep their
size. */
.tile-attach {
position: absolute;
inset: 0;
z-index: 2;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
gap: 10px;
background: color-mix(in srgb, var(--term-bg, #161b23) 88%, transparent);
font-size: 13px;
color: var(--text-muted);
}
.tile-attach[hidden] {
display: none;
}
.tile-attach-btn {
padding: 4px 14px;
font: inherit;
color: var(--accent-ink, #fff);
background: var(--accent, #4a9eff);
border: none;
border-radius: 4px;
cursor: pointer;
}
.tile-attach-btn:disabled {
opacity: 0.5;
cursor: progress;
}
/* Quiet "loading" state while the tile's capture waits in the grid's one load
queue (or runs). */
.tile.tile--loading .tile-body::after {