release: 0.2.0

Promote [Unreleased] → [0.2.0] in the changelog (M2 UI + M3/M4 + fixes) and
bump the dev-default version to 0.2.0 / 200. The pushed tag drives the released
version per docs/RELEASING.md.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -6,7 +6,14 @@ the source of truth for version codes (see Calendula's `docs/RELEASING.md`).
 
 ## [Unreleased]
 
+## [0.2.0] - 2026-06-27
+
 ### Added
+- M2 Material 3 Expressive UI — the app is fully navigable now: the
+  provider/permission onboarding gate, the lists overview (smart lists + user
+  lists grouped by account), and the task list (swipe-to-complete / -delete,
+  inline add, smart-list section headers), detail, and create/edit screens, all
+  wired to the M1 ViewModels.
 - M3 detail/edit polish: a "Progress" slider (percent-complete, 5% detents,
   written to `Tasks.PERCENT_COMPLETE`) and conflict-safe saves — `updateTask`
   re-checks the provider's `last_modified` against the value captured when the