release: prepare v0.3.0-probe notes

CHANGELOG.md

@@ -0,0 +1,28 @@
+# Changelog
+
+## v0.3.0-probe — 2026-03-13
+
+### Summary
+This release marks the transition from a skill-only continuity package to a
+**dual-form package**:
+- the existing `SKILL.md` remains the fallback behavior contract
+- a new **lifecycle plugin probe** is included to validate the primary runtime path
+
+### Added
+- `plugin/lifecycle-prototype.ts`
+- `references/phase2-hook-validation.md`
+- `references/scope.md`
+- `references/plugin-design.md`
+
+### Changed
+- repository direction clarified: primary long-term path is now a standard lifecycle plugin
+- ContextEngine is now documented as a future option, not the v1 default
+- README updated to describe the package as skill + lifecycle plugin probe
+- skill docs aligned to the lifecycle-plugin plan
+
+### Validated
+- Experiment A passed on multiple resident subagents (`tech_geek`, `travel_assistant` after workspace/startup-rule cleanup)
+- startup continuity injection can work without `read`
+
+### Pending
+- Experiment C (compaction-path verification) remains pending because no real compaction event was triggered in the earlier pressure test