Release 0.4.2

Final stability fixes after 0.4.1: Model Error leaves out spans with
unknown inputs; window sensors unknown at startup stay unknown, with last
known states restored as unknown across restarts; unload, reload and
removal can no longer publish stale results or recreate a deleted model;
Forecast Error scores only forecasts whose plan the relay matched within
2 minutes. Adds Reset learned model to Configure. Still observation-only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

AUDIT.md

@@ -398,12 +398,12 @@ ruff, 159 offline tests, 28 HA Core tests; the offline tests also pass on Python
 3.9.6. `sh scripts/check.sh` additionally validates packaging, translations and
 the changelog.
 
-## Final stability fixes after 0.4.1 — 2026-10-27
+## 0.4.2 — final stability fixes after 0.4.1 — 2026-10-27
 
 Scope: four issues from an independent review of 0.4.1, plus a user-requested
 *Reset learned model* action. Repository code and tests only (HA Core 2025.12.0
 and 2026.2.3 harness); no HAOS, device or deployment testing. Still no actuator
-code; the static and runtime service-call guards pass. Version unchanged (0.4.1).
+code; the static and runtime service-call guards pass. Released as 0.4.2.
 
 Confirmed issues, root causes and fixes: