docs: mark changelog 0.1.0 public release (2026-04-22)

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## [Unreleased] — 2026-04-22
+## [0.1.0] — 2026-04-22
 
 ### Improvement — DEM & hysteresis algorithm refinements
 
@@ -35,7 +35,7 @@ activities.
 
 ---
 
-## [Unreleased] — 2026-04-20
+## [0.1.0-dev] — 2026-04-20
 
 ### Improvement — Elevation gain accuracy (hysteresis accumulation)
 
@@ -106,7 +106,7 @@ results worse than no correction on some activities):
 
 ---
 
-## [Unreleased] — 2026-04-16
+## [0.1.0-dev] — 2026-04-16
 
 ### New feature — Self-service user settings page
 
@@ -201,7 +201,7 @@ No email infrastructure required. Flow:
 
 ---
 
-## [Unreleased] — 2026-04-10
+## [0.1.0-dev] — 2026-04-10
 
 ### New feature — Per-instance user limit
 
@@ -336,7 +336,7 @@ automatically.
 
 ---
 
-## [Unreleased] — 2026-04-06
+## [0.1.0-dev] — 2026-04-06
 
 ### New feature — Strava sync from UI
 
@@ -373,7 +373,7 @@ bincio edit --strava-client-id YOUR_ID --strava-client-secret YOUR_SECRET
 `site/.env`, regardless of whether the edit server is running. This is intentional — the env
 var is the "edit mode enabled" flag. Remove it from `.env` to hide the button.
 
-## [Unreleased] — 2026-04-01
+## [0.1.0-dev] — 2026-04-01
 
 ### Security fixes (second-pass audit)