docs(changelog): rewrite the last thirty releases for readers

Releases 1.13.1 through 1.22.1 are regrouped by what each change is
(New, Improvements, Fixes, Misc) and reworded in the voice the
changelog-authoring skill asks for: one or two plain sentences per
bullet, the symptom or the capability named, no mechanism. Packed
bullets were split, every fact and every contributor credit kept.
Older releases keep the mechanical grouping.

Claude-Session: https://claude.ai/code/session_01VqV56Hez25hTxXH4ipJfzH

changelog/1.17.1.md

@@ -6,35 +6,35 @@ date: 2026-07-29
 ## App
 
 ### New
-- System prompt optimization: added an optional Behavior setting that reduces OpenCode's built-in system prompt by about 40% for the build and plan agents; it applies after restarting OpenCode and is unsuitable for custom build or plan definitions.
+- Behavior: an optional setting trims about 40% off OpenCode's built-in system prompt for the build and plan agents. It takes effect after OpenCode restarts, and it is not meant for custom build or plan definitions.
 
 ### Improvements
-- Chat: slash-command starters now include text already entered in the draft as command arguments.
-- Session goals: goals started from slash commands, including scheduled tasks, now use the command's expanded instructions.
-- Usage: OpenAI business-account Codex usage now shows the configured spend limit (thanks to @jrandiny).
-- Desktop/Linux: AppImage tray menus now include Show, Hide, and Close, and "Open in" shows system application icons (thanks to @makeittech).
-- Mobile: image previews load when connected through the private relay.
+- **Chat tools:** a Bash card shows output while the command is still running, in a pane of fixed height that follows new lines until you scroll away. The timer keeps counting to the real end instead of stopping at 300 seconds.
+- Chat: a slash-command starter picks up whatever you already typed in the draft and passes it as the command's arguments.
+- Usage: an OpenAI business account shows the spend limit you configured for Codex (thanks to @jrandiny).
+- Desktop: bundled OpenCode updates together with OpenChamber, with no separate update to accept (thanks to @yulia-ivashko).
+- Desktop/Linux: the AppImage tray menu has Show, Hide, and Close, and "Open in" shows the icons of the apps it found (thanks to @makeittech).
 
 ### Fixes
-- **Chat tools:** Bash tool cards now show output before a command finishes, keep it in a fixed-height pane, and follow new lines until you scroll away. Long-running commands no longer remain at a 300-second duration, and their timers continue until they finish.
-- OpenCode: chats now recover when OpenCode stops responding during a response, and managed OpenCode no longer restarts repeatedly during a temporary connectivity failure.
-- Desktop: bundled OpenCode no longer offers a separate update; it updates with OpenChamber (thanks to @yulia-ivashko).
-- Chat: fully loaded histories no longer show "Load older" again after a refresh.
-- Chat: messages removed by reverting no longer reappear after you send another message.
-- Settings: subpanels keep a visible vertical scrollbar and no longer show a horizontal scrollbar (thanks to @sergiofspedro).
+- OpenCode: a chat recovers when OpenCode goes quiet mid-response, and managed OpenCode stops restarting in a loop during a brief connection problem.
+- Session goals: a goal started from a slash command, a scheduled task included, runs the command's full instructions.
+- Chat: a history you loaded to the end stops offering "Load older" after a refresh.
+- Chat: messages you removed by reverting stay gone after you send the next message.
+- Mobile: image previews load over the private relay.
+- Settings: subpanels keep a visible vertical scrollbar and lose the horizontal one (thanks to @sergiofspedro).
 
 ## VS Code
 
 ### New
-- **OpenCode updates:** the extension can now update a managed OpenCode installation and restart it automatically; externally managed servers are left unchanged (thanks to @yulia-ivashko).
+- **OpenCode updates:** the extension can update a managed OpenCode installation and restart it for you. A server you manage yourself is left alone (thanks to @yulia-ivashko).
 
 ### Improvements
-- Chat: slash-command starters now include text already entered in the draft as command arguments.
-- Usage: OpenAI business-account Codex usage now shows the configured spend limit (thanks to @jrandiny).
+- **Chat tools:** a Bash card shows output while the command is still running, in a pane of fixed height that follows new lines until you scroll away. The timer keeps counting to the real end instead of stopping at 300 seconds.
+- Chat: a slash-command starter picks up whatever you already typed in the draft and passes it as the command's arguments.
+- Usage: an OpenAI business account shows the spend limit you configured for Codex (thanks to @jrandiny).
 
 ### Fixes
-- **Chat tools:** Bash tool cards now show output before a command finishes, keep it in a fixed-height pane, and follow new lines until you scroll away. Long-running commands no longer remain at a 300-second duration, and their timers continue until they finish.
-- Chat: a stalled response now reconnects instead of remaining stuck in the extension.
-- Chat: fully loaded histories no longer show "Load older" again after a refresh.
-- Chat: messages removed by reverting no longer reappear after you send another message.
-- Settings: subpanels keep a visible vertical scrollbar and no longer show a horizontal scrollbar (thanks to @sergiofspedro).
+- Chat: a stalled response reconnects instead of hanging in the extension.
+- Chat: a history you loaded to the end stops offering "Load older" after a refresh.
+- Chat: messages you removed by reverting stay gone after you send the next message.
+- Settings: subpanels keep a visible vertical scrollbar and lose the horizontal one (thanks to @sergiofspedro).