feat(m9): .deb package + CI build/publish — 0.35.0

packaging/make_deb.py builds rigdoctor_<ver>_all.deb (Architecture: all) via
dpkg-deb, no debhelper: Depends python3; Recommends python3-pyside6/pyte (GUI by
default, --no-install-recommends = CLI only). Installs the package, both
launchers, desktop entry + icon; postinst refreshes the desktop database.
release.yml builds it as a release asset and optionally pushes to the Gitea apt
registry (REGISTRY_TOKEN). Verified locally: valid .deb, packaged launcher runs
'rigdoctor --version'. Docs/README/ROADMAP/MODULES updated; M9 complete.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/ROADMAP.md

@@ -67,9 +67,12 @@ Ubuntu + NVIDIA first; `.deb` distribution (see `DECISIONS.md`).
       Settings "Recording trigger") incl. the zero-config **game-launch watcher**
       (`core/watcher.py`, `rigdoctor watch`); and a **graphical first-run setup wizard**
       (`gui/setup_wizard.py`): environment → dependency-bundle selection → install → recording
-      trigger → readiness, auto-launched by install.sh and re-runnable from Settings.
-      *Pending:* `.deb` packaging (next bullet).
-- [ ] `.deb` packaging (D8) declaring per-bundle deps incl. python3-pyside6 for Desktop UI
+      trigger → readiness, auto-launched by install.sh and re-runnable from Settings; and a
+      **`.deb`** (`packaging/make_deb.py`, `Architecture: all`, `Depends: python3`,
+      `Recommends: python3-pyside6/pyte`) built + published in CI (release asset + optional
+      Gitea apt registry). **M9 complete.**
+- [x] `.deb` packaging (D8) — built via `dpkg-deb` (no debhelper); GUI deps as Recommends so
+      `apt install rigdoctor` includes the Desktop UI, `--no-install-recommends` = CLI only.
 
 ## Phase 5 — Breadth (later)
 - [ ] AMD GPU support in M1 (Steam Deck / Radeon)