v0.7.0: mark all as read by clicking the unread badge

- Click a source's unread count in the sidebar to mark all of that source's
  messages read (clears the badge + reduces the All-sources total); click the
  All-sources total to mark everything read.
- POST /feed/mark-read (session, owner-scoped, excludes trashed). Visible feed
  rows drop their unread state too. Badge is keyboard-activatable (Enter/Space).

156 tests pass (4 new); inline JS re-validated with node --check.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CHANGELOG.md

@@ -9,6 +9,14 @@ former name, "Daybook".)
 
 _Nothing yet._
 
+## [0.7.0] — 2026-09-07
+
+### Added
+- **Mark all as read.** Click a source's unread badge in the sidebar to mark
+  all of that source's messages read (clears the badge); click the **All
+  sources** total to mark everything read. Owner-scoped, excludes trashed; any
+  visible feed rows update too. Backed by `POST /feed/mark-read`.
+
 ## [0.6.3] — 2026-09-07
 
 ### Changed
@@ -235,7 +243,8 @@ First tagged release.
 - Dockerised (Gunicorn + whitenoise), SQLite, `git`-based deploy with a
   runbook (`deploy/cloud_agent_deploy.md`) and health check.
 
-[Unreleased]: https://git.cygnus.systems/peter/daybook/compare/v0.6.3...HEAD
+[Unreleased]: https://git.cygnus.systems/peter/daybook/compare/v0.7.0...HEAD
+[0.7.0]: https://git.cygnus.systems/peter/daybook/compare/v0.6.3...v0.7.0
 [0.6.3]: https://git.cygnus.systems/peter/daybook/compare/v0.6.2...v0.6.3
 [0.6.2]: https://git.cygnus.systems/peter/daybook/compare/v0.6.1...v0.6.2
 [0.6.1]: https://git.cygnus.systems/peter/daybook/compare/v0.6.0...v0.6.1