Add T3 Code nightly package (#793)

* Add T3 Code nightly package

* Hold a T3 Code nightly until its AppImages have uploaded

Upstream's release workflow publishes the GitHub release before softprops/action-gh-release uploads its assets: across the last 70 nightlies the AppImages finished 13 to 133 seconds after publication. A scheduled sync that lands in that window selects the release, finds no ARM AppImage to hash, and fails the shared sync run. A 30-minute minimum age, the hold omarchy-dev already uses, makes the watcher keep the previous nightly until the new one is complete.

Co-Authored-By: Codex XHigh <noreply@openai.com>

---------

Co-authored-by: Codex XHigh <noreply@openai.com>

pkgbuilds/t3code-nightly-bin/t3code-launcher.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+set -euo pipefail
+
+user_flags=()
+config_home="${XDG_CONFIG_HOME:-}"
+[[ -n "$config_home" || -z "${HOME:-}" ]] || config_home="$HOME/.config"
+flags_file="${config_home:+$config_home/t3code-nightly-flags.conf}"
+
+if [[ -n "$flags_file" && -f "$flags_file" && -r "$flags_file" ]]; then
+  while IFS= read -r line || [[ -n "$line" ]]; do
+    line="${line%%#*}"
+    [[ -n "${line//[[:space:]]/}" ]] || continue
+    read -r -a flags <<<"$line"
+    user_flags+=("${flags[@]}")
+  done <"$flags_file"
+fi
+
+# Chromium's own Ozone detection falls back to XWayland often enough to matter,
+# and the result is a blurry window on every scaled display.
+platform_flags=()
+if [[ -n "${WAYLAND_DISPLAY:-}" || "${XDG_SESSION_TYPE:-}" == wayland ]]; then
+  platform_flags=(--ozone-platform=wayland)
+
+  for flag in "${user_flags[@]}" "$@"; do
+    case "$flag" in
+      --ozone-platform=* | --ozone-platform-hint=*) platform_flags=() ;;
+    esac
+  done
+fi
+
+exec /usr/lib/t3code-nightly/t3code "${platform_flags[@]}" "${user_flags[@]}" "$@"