Release 0.0.5: health report (M4), installer (M9), update check (M13)

M4 — health report (the 0.0.4 CHANGELOG entry, folded into this release):
- core/health.py: scan journalctl (Xid/panic/OOM/MCE/AER/thermal), SMART,
  NVIDIA driver mismatch, journald persistence, live temps -> findings
- CLI `rigdoctor report` (text/JSON); GUI Health tab; scanner tests

M9 — installer (first cut):
- core/{catalog,sysenv,installer}.py; `rigdoctor install [--check] [-y]`
- GUI Setup tab: detect distro/GPU, show optional components, one-click
  install of missing apt packages via pkexec/sudo

M13 — update check (check half):
- core/updates.py; sidebar shows up-to-date / "Update to v…" / unavailable

Plus tests, version bump to 0.0.5, CHANGELOG, and doc status updates.

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

README.md

@@ -2,10 +2,10 @@
 
 A **modular diagnostics, monitoring, and health-check toolkit for Linux gamers.**
 
-> **Status:** 🟢 Phase 1 (MVP) in progress. The **sensor core (M1)** and **crash-capture
-> logger (M3)** work — `snapshot`/`monitor` read NVIDIA GPU, CPU, memory, and NVMe live, and
-> `record` captures a crash-safe log with a post-crash report. A desktop GUI (M10) is also
-> up. Health report (M4) is next. See `docs/ROADMAP.md`.
+> **Status:** 🟢 Phase 1 (MVP) complete. The **sensor core (M1)**, **crash-capture logger
+> (M3)**, and **health report (M4)** all work — live `snapshot`/`monitor`, crash-safe `record`
+> with a post-crash report, and `report` to scan logs/SMART/driver for likely causes. A
+> desktop GUI (M10) ties them together (dashboard, recording, health). See `docs/ROADMAP.md`.
 
 ## Why this exists
 
@@ -104,8 +104,8 @@ rigdoctor gui             # or: rigdoctor-gui
 It opens a dark-themed window with sidebar navigation and a **live dashboard** over the
 same sensor core — circular gauges for the headline metrics plus collapsible per-subsystem
 cards (GPU/CPU/memory/storage) with temperature-colored values (icey-blue → green → red).
-The **Logs** section is a full recording page (start/stop, live status, and the post-crash
-report); Health / Inventory are placeholders until M4 / M5 land.
+The **Logs** and **Health** sections are full pages (recording controls + post-crash report;
+and the kernel-log / SMART / driver scan). **Inventory** is a placeholder until M5 lands.
 
 Without the GUI extra, `pip install -e .` gives just the stdlib-only CLI.