feat: real release notes, restart button, reliable .run installer (0.0.10)

- feat(ci): set each Gitea release body from the matching CHANGELOG section
  (was hardcoded "Automated release for…")
- feat(updater): show "What's new" — release notes dialog before applying (GUI)
  and in `rigdoctor update` (CLI); fetch_latest/update_state now return notes
- feat(gui): "Restart now" button relaunches the app after an update is applied
- fix(packaging): build the self-extracting .run with a pure-Python extractor
  (packaging/make_run.py) instead of makeself, so it attaches to every release
  (it was silently skipped before)
- chore: adopt Conventional Commits + git-cliff (cliff.toml, packaging/
  changelog.sh) for changelog generation going forward (D20)
- chore(gui): drop internal module refs (M4, M5, …) from Setup descriptions

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

CHANGELOG.md

@@ -5,6 +5,23 @@ All notable changes to RigDoctor are recorded here. Format follows
 (`MAJOR.MINOR.PATCH`, pre-1.0). `__version__` and `pyproject.toml` must match the git
 release tag (so the auto-updater, D18, can compare versions).
 
+## [0.0.10] - 2026-05-21
+### Added
+- **"Restart now" button** after a successful in-app update — relaunches RigDoctor for you
+  instead of asking you to restart manually.
+- **Real release notes**: CI now sets each Gitea release's body from the matching CHANGELOG
+  section (instead of "Automated release for…"), and the updater shows **"What's new"** — a
+  notes dialog before applying (GUI) and in `rigdoctor update` (CLI).
+### Changed
+- Setup page / `rigdoctor install`: dropped internal module references (M4, M5, …) from the
+  component descriptions — end users don't need them.
+- Adopting **Conventional Commits** + **git-cliff** (`cliff.toml`, `packaging/changelog.sh`)
+  to generate CHANGELOG entries from commit history going forward (D20).
+### Fixed
+- The self-extracting **`.run` installer** is now built **without makeself** (a pure-Python
+  self-extractor, `packaging/make_run.py`), so it reliably attaches to every release — it was
+  silently skipped before because the CI runner couldn't install makeself.
+
 ## [0.0.8] - 2026-05-21
 ### Added
 - **Periodic update checks**: the GUI now re-checks for new releases while running (every