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shadowdaoandClaude Opus 5 3a49a67c1f Fix terminal input reordering and Linux terminal rendering
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Two separate defects behind the same report: typing in a container terminal
is sluggish on Linux, and a backspace can land *after* the characters typed
behind it.

The web terminal was the control that separated them. It shares the Docker
exec, the PTY, `exec_manager`, the input channel and its serial writer task,
and xterm.js itself — and it does not exhibit either symptom. Only three
things differ, and each accounts for part of the report.

**Input ordering.** Every keystroke was its own `invoke("terminal_input")`.
That command is `async`, so Tauri spawns each one as an independent task, and
those tasks then race for the session mutex in `ExecSessionManager::send_input`
— nothing preserved the order the bytes were typed in. The serial writer
downstream cannot help, because the order is already lost before anything
reaches the channel. The web terminal gets ordering for free by awaiting
`send_input` inline in a single WebSocket reader loop.

`useTerminal` now holds a per-session queue: one write in flight at a time,
the next only after the previous resolves. Anything typed meanwhile coalesces
into the next chunk, which also collapses a burst of typing into a couple of
IPC round trips rather than one per key. The queue is module scope, not hook
scope, because `useTerminal()` is called from several components — a per-hook
queue would leave speech-to-text, image paste and typing racing each other.
Each caller's promise still settles only when its own bytes have gone, so
`await sendInput(...)` keeps its meaning.

**The DMA-BUF escape hatch did not exist.** `apply_webkit_wayland_workaround`
left any pre-set value alone, including `0`, on a stated assumption that
WebKitGTK reads the variable as a boolean. It reads presence, so
`WEBKIT_DISABLE_DMABUF_RENDERER=0` disabled DMA-BUF exactly like `=1`, and no
value a user could set got the accelerated path back. `0`/`false`/`no`/empty
now remove the variable, which is the only thing WebKitGTK reads as enabled.
The default is unchanged: unset still means disabled on Linux.

**WebGL does not degrade to canvas here.** The comment on that workaround
assumed `@xterm/addon-webgl` would fall back to the canvas renderer once
DMA-BUF was off. Its constructor throws only when WebGL is *absent*, and with
DMA-BUF disabled WebGL is still present — served by software rasterisation.
So the addon loads and every frame is rendered on the CPU, slower than the
canvas renderer it was assumed to fall back to. `AppSettings::terminal_gpu_
rendering` decides whether it loads at all: `None` is auto (on for macOS and
Windows, off on Linux), `Some(_)` forces it either way from Settings →
Terminal. `Option<bool>` rather than `bool` so the zero value means "we
choose" instead of pinning every existing settings file to one answer.

Verified: 643 frontend tests and 530 Rust tests pass, clippy clean, secret
scan clean. The Linux rendering half needs confirming on a real desktop —
neither symptom reproduces in a headless container.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ApLYH6ybHwQFkMCtKuHrrV
2026-08-28 12:51:18 -07:00
shadow-testandClaude Sonnet 5 8f62949902 Correct two overclaims in the Wayland workaround's comment
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Review found: "nothing this app's UI depends on" is backwards — the
terminal's @xterm/addon-webgl renderer is exactly the GPU compositing path
this setting disables, it just degrades gracefully (the addon's own
construction already handles WebGL being unavailable) rather than
crashing. And the "not simply Wayland vs X11" justification for going
unconditional doesn't hold up: WAYLAND_DISPLAY is exported into an
XWayland client's environment too, so gating on it would have caught that
case as well — the real reason to go unconditional is that there's no
reliable heuristic for the thing that actually matters (which
Mesa/driver/compositor combination is affected), not that the naive gate
misses XWayland specifically.

Also noted, not changed: the env var leaks to whatever the app spawns
afterwards (a cold-launched default browser via xdg-open), and the "=0
re-enables it" parenthetical isn't verified against WebKitGTK's own
source, so softened to say what's actually guaranteed (an already-set
value is left alone) rather than assume presence-vs-boolean parsing.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FGjXq6fqtAFHdbhk4f3PfZ
2026-08-27 10:57:45 -07:00
shadow-testandClaude Sonnet 5 6354cb42b2 Work around WebKitGTK's EGL crash on Wayland (triple-c#34)
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Reported on CachyOS/Arch with Wayland: the app aborts immediately with
"Could not create default EGL display: EGL_BAD_PARAMETER. Aborting."
printed straight to stderr by WebKitGTK's own C code, before Triple-C's
own logging even gets a chance to say anything useful about it.

This is WebKitGTK's DMA-BUF renderer (its default accelerated-compositing
path since 2.42) failing on some Mesa/driver/compositor combinations. Set
WEBKIT_DISABLE_DMABUF_RENDERER=1 unconditionally on Linux before the Tauri
builder runs, which is where GTK/WebKitGTK actually read it — there's no
reliable way to detect the affected combination ahead of time (reports of
this exact failure exist under XWayland too, not just pure Wayland
sessions), and WebKitGTK's fallback compositing path costs some rendering
performance this app's UI doesn't need. Left alone if a user has already
set the variable themselves.

Does not address the other two things filed under the same issue (links
not opening on the host, and a request for a native Arch/CachyOS package)
— those need more information / are a separate scope, respectively.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FGjXq6fqtAFHdbhk4f3PfZ
2026-08-27 10:45:24 -07:00
shadow-testandClaude Opus 4.6 97a0745ead Initial commit: Triple-C app, container, and CI
Tauri v2 desktop app (React/TypeScript + Rust) for managing
containerized Claude Code environments. Includes Gitea Actions
workflow for building and pushing the sandbox container image,
and a BUILDING.md guide for manual app builds on Linux and Windows.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-27 04:29:51 +00:00