Stop resetting history navigation on input so editing recalled entries doesn't wipe the bottom draft. Allow ArrowDown navigation while in history and persist the session draft only for fresh prompts.
Render SplitFilePanel consistently and move empty/loading messages into the viewer area so the right drawer keeps its standard layout even when there are no session diffs, no git changes, or files are still loading.
Extract prompt draft/history, attachments, picker, and keydown logic into co-located hooks. Introduce PromptInputApi for quote/expand/setText and migrate SessionView off DOM poking; remove legacy registerQuoteHandler.
Split InstanceShell2 into focused shell modules (drawer chrome/resize, session context/cache, sidebar, right panel tabs/components) to improve maintainability while preserving behavior.
Use OpenCode v2 file APIs for browsing and Monaco DiffEditor for session snapshot diffs, with local baseline language metadata and optional CDN language loading.
Configure Workbox to precache only static UI assets and ignore HTML documents, preventing route responses like / and /login from being served out of cache.
Track the worktree slug when permissions are enqueued and send permission replies through a worktree-scoped client so x-opencode-directory matches the originating context.
Let the 'Unable to launch OpenCode' dialog grow up to 80vh and keep only the error output pane scrollable so longer stderr is visible without cramped nested scrolling.
Track per-message part count changes and rebuild timeline segments so deletions or streaming updates don't leave stale entries in the message timeline.
Allow pointer interaction with the message preview tooltip and delay hover dismissal so users can move from the timeline segment onto the preview to copy or delete.
Default to HTTPS with optional loopback HTTP, generate/rotate self-signed certs via node-forge, and surface Local/Remote connection URLs. Update /api/meta schema, UI remote access overlay, and desktop shells to follow the new startup output.
