🎉 Initial commit: PiAgentUI — AI Agent Desktop & Web UI

A professional workspace for AI coding agents with:
- Real-time streaming chat with SSE
- Session management (fork, clone, tree navigation)
- MCP tools browser & metadata panel
- Skills browser (global, project, package sources)
- Voice input & STT provider configuration
- Integrated terminal & file explorer
- Model selector with capability metadata
- Keyboard-first UI with command palette
- 8 languages (en, pt-BR, es, ja, zh-CN, ar, bn, hi)
- Tauri 2 desktop app
- React 19 + TypeScript + Vite 8 + Tailwind CSS 4
- Pi Agent extension runtime

Originally forked from OpenCodeUI, now an independent project.
License: GPL-3.0-only

docs/superpowers/plans/2026-05-31-piagentui-git-composer-control.md

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+# PiAgentUI Git Composer Control Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Implement a Git branch/control popover in the message composer using GitHub Octicons and safe backend Git endpoints.
+
+**Architecture:** Add focused Git logic in `extensions/piagentui-git-manager.ts`, expose `/api/vcs/*` endpoints from the extension server, expand frontend VCS API/types, and add `GitComposerControl` inside `InputToolbar` before agent/variant selectors.
+
+**Tech Stack:** React 19, TypeScript, Vite, Vitest, Node child_process, Git CLI, `@primer/octicons-react`.
+
+---
+
+## Files
+
+- Create: `extensions/piagentui-git-manager.ts`
+- Create: `extensions/piagentui-git-manager.test.ts`
+- Modify: `extensions/piagentui-server.ts`
+- Modify: `extensions/piagentui-server.test.ts`
+- Modify: `src/types/api/vcs.ts`
+- Modify: `src/types/api/index.ts`
+- Modify: `src/api/vcs.ts`
+- Create/modify: `src/api/vcs.test.ts`
+- Create: `src/features/chat/input/GitComposerControl.tsx`
+- Create: `src/features/chat/input/GitComposerControl.test.tsx`
+- Modify: `src/features/chat/input/InputToolbar.tsx`
+- Modify: `package.json`, `package-lock.json`
+
+## Task 1 — Backend Git manager
+
+- [ ] Write failing tests for branch parsing, status parsing, safe argv commands and commit validation.
+- [ ] Implement `runGit`, `getGitStatus`, `listGitBranches`, `checkoutGitBranch`, `createGitBranch`, `stageGitPaths`, `unstageGitPaths`, `commitGitChanges`, `pullGitBranch`, `pushGitBranch`.
+- [ ] Verify focused test passes.
+
+## Task 2 — Backend endpoints
+
+- [ ] Write failing server endpoint tests for `/api/vcs/status`, `/api/vcs/branches`, `/api/vcs/commit`.
+- [ ] Add endpoint routing in `piagentui-server.ts` with request parsing and errors.
+- [ ] Verify server tests pass.
+
+## Task 3 — Frontend API contract
+
+- [ ] Write failing API tests for query/body shapes.
+- [ ] Expand `src/types/api/vcs.ts` and `src/api/vcs.ts`.
+- [ ] Verify API tests pass.
+
+## Task 4 — Composer UI
+
+- [ ] Install `@primer/octicons-react`.
+- [ ] Write failing component tests for branch chip, popover opening and commit action.
+- [ ] Implement `GitComposerControl` with Octicons.
+- [ ] Integrate into `InputToolbar` before agent selector.
+- [ ] Verify component tests pass.
+
+## Task 5 — Full verification
+
+- [ ] Format touched files with `node node_modules/prettier/bin/prettier.cjs --write ...`.
+- [ ] Run LSP diagnostics on touched files.
+- [ ] Run `npm run typecheck`, `npm run typecheck:extensions`, focused tests, `npm run test:run`, `npm run build`, and `git diff --check`.