diff --git a/CHANGELOG.md b/CHANGELOG.md
index 78d0f0ed..477c1b6d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,17 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+- Chat: clicking a Mermaid diagram in a chat message now opens a fullscreen pan/zoom preview.
+- Chat: code-block highlighting now runs off the main thread, preventing UI freezes when rendering code-heavy responses.
+- Chat: the context usage indicator now shows as a circular progress ring with the same color thresholds, visible in all workspace headers.
+- Chat/Mobile: the session status button now responds more reliably to taps on Android.
+- Scheduled Tasks: the task editor dialog now supports Cron expressions with inline validation, quick-example chips, and a preview of the next four upcoming runs (thanks to @tomzx).
+- Files: syntax highlighting in the file editor, Plan View, and Skills page now uses Shiki for broader language support.
+- Agents: deleting a built-in agent no longer creates a disable override — the agent stays as-is and shows a clear explanation instead of silently disappearing.
+- Agents: deleting an agent now shows an error toast when the definition is missing, instead of failing silently.
+- Right Sidebar: switching between sidebar tabs is less likely to re-render unrelated content (thanks to @bashrusakh).
+- Reliability: session list loading handles Windows paths and concurrent requests more steadily, and duplicate health-check URLs are removed from diagnostics.
+
 ## [1.13.0] - 2026-06-15
 
 - Security: LAN and remote browser access now require a UI password before the server will start.
diff --git a/packages/vscode/CHANGELOG.md b/packages/vscode/CHANGELOG.md
index 8e550354..b69fe8a3 100644
--- a/packages/vscode/CHANGELOG.md
+++ b/packages/vscode/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [Unreleased]
+
+- Chat: code-block highlighting now runs off the main thread, keeping the UI responsive during code-heavy responses.
+- Chat: the context usage indicator now shows as a circular progress ring.
+- Agents: deleting a built-in agent no longer creates a disable override — the agent stays as-is instead of being silently disabled.
+- Agents: deleting an agent now shows an error toast when the definition is missing.
+
 ## [1.13.0] - 2026-06-15
 
 - Startup: the extension opens faster — recent sessions, models, providers, and projects appear instantly from cache and refresh in the background, and the loading screen no longer lingers after the interface is ready.