feat: terminal enhancements from dpcode

[aaditagrawal]

Summary

Ports terminal enhancement features from the dpcode fork.

Web components:

• Terminal search — in-terminal text search (Cmd+F in terminal)
• Scroll-to-bottom — button to jump to latest terminal output
• Activity indicator — shows running process status
• Identity icon — provider-aware terminal icon
• Terminal chrome — header/toolbar UI for terminal panes
• Layout constants — terminal sizing and spacing
• Runtime appearance — terminal theme configuration

Terminal utilities:

• Close confirmation — prompt before closing active terminals
• New terminal action — logic for creating new terminal sessions

Server-side:

• Thread title generation — auto-generate concise titles from terminal activity
• Title tracker — stateful tracking of terminal thread titles

Test plan

• Terminal close confirmation tests
• Terminal new action tests
• Thread title generation tests

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 52cf972e-fdef-41f8-9c96-21a61db5fc14

📥 Commits

Reviewing files that changed from the base of the PR and between b3bd5c3 and 304e777.

⛔ Files ignored due to path filters (1)

• bun.lock is excluded by !**/*.lock

📒 Files selected for processing (23)

• apps/server/src/terminal/terminalThreadTitle.test.ts
• apps/server/src/terminal/terminalThreadTitle.ts
• apps/server/src/terminal/terminalThreadTitleTracker.ts
• apps/web/package.json
• apps/web/src/components/ChatView.browser.tsx
• apps/web/src/components/TerminalScrollToBottom.tsx
• apps/web/src/components/TerminalSearch.tsx
• apps/web/src/components/ThreadTerminalDrawer.tsx
• apps/web/src/components/terminal/TerminalActivityIndicator.tsx
• apps/web/src/components/terminal/TerminalChrome.tsx
• apps/web/src/components/terminal/TerminalIdentityIcon.tsx
• apps/web/src/components/terminal/TerminalLayout.ts
• apps/web/src/components/terminal/terminalRuntimeAppearance.ts
• apps/web/src/lib/terminalCloseConfirmation.test.ts
• apps/web/src/lib/terminalCloseConfirmation.ts
• apps/web/src/lib/terminalNewAction.test.ts
• apps/web/src/lib/terminalNewAction.ts
• apps/web/src/terminalPaneLayout.ts
• apps/web/src/terminalStateStore.test.ts
• apps/web/src/terminalStateStore.ts
• apps/web/src/types.ts
• packages/shared/package.json
• packages/shared/src/terminalThreads.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/dpcode-terminal

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