chore(marketing): prepare v0.3.6 release content

apps/marketing/src/content/changelog/v0.3.6.md

@@ -0,0 +1,40 @@
+---
+version: 0.3.6
+date: 2026-08-24
+title: Source Control and Startup Reliability
+summary: Threadlines now recovers safely from corrupt databases and makes git operations more predictable with immediate feedback and clearer error messages.
+githubRelease: https://github.com/Threadlines/threadlines/releases/tag/v0.3.6
+highlights:
+  - title: Checkout switches apply immediately
+    description: When you switch branches or worktrees, the interface now updates instantly instead of showing stale state. Stopped threads no longer shadow worktree changes, and active sessions show a switch chip while operations complete.
+    evidence:
+      - f886fe09
+  - title: Clearer feedback for source control actions
+    description: Refused source control actions now explain why through toast messages and panel updates. The parent repository safety gate and failed branch operations report their reasons instead of silently returning.
+    evidence:
+      - f886fe09
+  - title: Safe recovery from corrupt database
+    description: Threadlines can now recover automatically from a corrupt local database during startup instead of failing to launch. The original database and its companion files are preserved in a recovery folder for inspection.
+    evidence:
+      - 5571f803
+  - title: Improved crash diagnostics
+    description: Crash reports now capture both application output streams, giving more complete diagnostic information to debug startup failures.
+    evidence:
+      - 432926ed
+alsoImproved:
+  - description: Repository detection now correctly handles symlinks, case variations, and path separators when checking parent-repository relationships, eliminating false positives.
+    evidence:
+      - f886fe09
+  - description: Failed checkout operations now roll back cleanly, restoring full state including sessions instead of leaving the interface in an inconsistent state.
+    evidence:
+      - f886fe09
+social: |-
+  Threadlines v0.3.6 is out 🧵
+
+  • Checkout switches apply instantly
+  • Clearer source control errors
+  • Auto-recover from corrupt DB
+  • Better crash diagnostics
+
+  Release notes: https://github.com/Threadlines/threadlines/releases/tag/v0.3.6
+---