refactor: streamline AGENTS.md for clarity and updated project structure

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Bohdan Triapitsyn
2026-01-10 01:02:00 +02:00
parent 21fdba08a3
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# OpenChamber - AI Agent & Contributor Reference
# OpenChamber - AI Agent Reference (verified)
Technical reference for AI coding agents and human contributors working on this project.
## Core purpose
OpenChamber provides UI runtimes (web/desktop/VS Code) for interacting with an OpenCode server (local auto-start or remote URL). UI uses HTTP + SSE via `@opencode-ai/sdk`.
## Core Purpose
## Tech stack (source of truth: `package.json`, resolved: `bun.lock`)
- Runtime/tooling: Bun (`package.json` `packageManager`), Node >=20 (`package.json` `engines`)
- UI: React, TypeScript, Vite, Tailwind v4
- State: Zustand (`packages/ui/src/stores/`)
- UI primitives: Radix UI (`package.json` deps), HeroUI (`package.json` deps), Remixicon (`package.json` deps)
- Server: Express (`packages/web/server/index.js`)
- Desktop: Tauri v2 (`packages/desktop/src-tauri/`)
- VS Code: extension + webview (`packages/vscode/`)
Web and desktop interface for OpenCode AI coding agent. Provides cross-device continuity, remote accessibility, and a unified chat interface using the OpenCode API backend.
## Monorepo layout
Workspaces are `packages/*` (see `package.json`).
- Shared UI: `packages/ui`
- Web app + server + CLI: `packages/web`
- Desktop app (Tauri): `packages/desktop`
- VS Code extension: `packages/vscode`
## Tech Stack
## Build / dev commands (verified)
All scripts are in `package.json`.
- Validate: `bun run type-check`, `bun run lint`
- Build all: `bun run build`
- Desktop build: `bun run desktop:build`
- VS Code build: `bun run vscode:build`
- Release smoke build: `bun run release:test` (shell script: `scripts/test-release-build.sh`)
- **React 19.1.1**: Modern React with concurrent features
- **TypeScript 5.8.3**: Full type safety
- **Vite 7.1.2**: Build tool with HMR and proxy
- **Tailwind CSS v4.0.0**: Latest `@import` syntax
- **Zustand 5.0.8**: State management with persistence
- **@opencode-ai/sdk**: Official OpenCode SDK with typed endpoints and SSE
- **@remixicon/react**: Icon system
- **@radix-ui primitives**: Accessible component foundations
## Runtime entry points
- Web bootstrap: `packages/web/src/main.tsx`
- Web server: `packages/web/server/index.js`
- Web CLI: `packages/web/bin/cli.js` (package bin: `packages/web/package.json`)
- Desktop bootstrap: `packages/desktop/src/main.tsx`
- Tauri backend: `packages/desktop/src-tauri/src/main.rs`
- VS Code extension host: `packages/vscode/src/extension.ts`
- VS Code webview bootstrap: `packages/vscode/webview/main.tsx`
## Architecture Overview (Monorepo)
## OpenCode integration
- UI client wrapper: `packages/ui/src/lib/opencode/client.ts` (imports `@opencode-ai/sdk/v2`)
- SSE hookup: `packages/ui/src/hooks/useEventStream.ts`
- Web server embeds/starts OpenCode server: `packages/web/server/index.js` (`createOpencodeServer`)
- Web runtime filesystem endpoints: search `packages/web/server/index.js` for `/api/fs/`
Workspaces:
- `packages/ui` - Shared UI components and stores
- `packages/web` - Web runtime, Express server, CLI
- `packages/desktop` - Tauri desktop app with native APIs
- `packages/vscode` - VS Code extension with webview UI
## Key UI patterns (reference files)
- Settings shell: `packages/ui/src/components/views/SettingsView.tsx`
- Settings shared primitives: `packages/ui/src/components/sections/shared/`
- Settings sections: `packages/ui/src/components/sections/` (incl `skills/`)
- Chat UI: `packages/ui/src/components/chat/` and `packages/ui/src/components/chat/message/`
- Theme + typography: `packages/ui/src/lib/theme/`, `packages/ui/src/lib/typography.ts`
- Terminal UI: `packages/ui/src/components/terminal/` (uses `ghostty-web`)
### Core Components (UI)
In `packages/ui/src/components/chat/`: ChatContainer, ChatEmptyState, ChatErrorBoundary, ChatInput, ChatMessage, FileAttachment, MarkdownRenderer, MessageList, ModelControls, PermissionCard, PermissionRequest, ServerFilePicker, StreamingTextDiff, AgentMentionAutocomplete, CommandAutocomplete, FileMentionAutocomplete.
In `packages/ui/src/components/chat/message/`: MessageBody, MessageHeader, ToolOutputDialog, DiffViewToggle, FadeInOnReveal; parts/ (AssistantTextPart, ReasoningPart, ToolPart, UserTextPart, etc.)
In `packages/ui/src/components/layout/`: MainLayout, Header, Sidebar, SidebarContextSummary, VSCodeLayout.
In `packages/ui/src/components/views/`: ChatView, GitView, DiffView, TerminalView, SettingsView.
In `packages/ui/src/components/sections/`: subsections agents/, commands/, git-identities/, openchamber/, providers/, shared/.
In `packages/ui/src/components/session/`: DirectoryTree, DirectoryExplorerDialog, SessionDialogs, SessionSidebar.
In `packages/ui/src/components/ui/`: CommandPalette, HelpDialog, ConfigUpdateOverlay, ContextUsageDisplay, ErrorBoundary, MemoryDebugPanel, MobileOverlayPanel, FireworksAnimation, OpenChamberLogo, OpenCodeIcon, ProviderLogo, ScrollShadow, OverlayScrollbar, plus Radix-based primitives (button, dialog, input, select, etc.)
## External / system integrations (active)
- Git: `packages/ui/src/lib/gitApi.ts`, `packages/web/server/index.js` (`simple-git`)
- Terminal PTY: `packages/web/server/index.js` (`bun-pty`/`node-pty`)
- Skills catalog: `packages/web/server/lib/skills-catalog/`, UI: `packages/ui/src/components/sections/skills/`
In `packages/ui/src/components/terminal/`: TerminalViewport
In `packages/ui/src/components/onboarding/`: OnboardingScreen
In `packages/ui/src/components/providers/`: ThemeProvider
## Agent constraints
- Do not modify `../opencode` (separate repo).
- Do not run git/GitHub commands unless explicitly asked.
- Keep baseline green (run `bun run type-check`, `bun run lint`, `bun run build` before finalizing changes).
### State Management (UI)
In `packages/ui/src/stores/`: contextStore, fileStore, messageStore, permissionStore, sessionStore, useAgentsStore, useCommandsStore, useConfigStore, useDirectoryStore, useFileSearchStore, useGitIdentitiesStore, useGitStore, useSessionStore, useTerminalStore, useUIStore
## Development rules
- Keep diffs tight; avoid drive-by refactors.
- Backend changes: keep web/desktop/vscode runtimes consistent (if relevant).
- Follow local precedent; search nearby code first.
- TypeScript: avoid `any`/blind casts; keep ESLint/TS green.
- React: prefer function components + hooks; class only when needed (e.g. error boundaries).
- Control flow: avoid nested ternaries; prefer early returns + `if/else`/`switch`.
- Styling: Tailwind v4; typography via `packages/ui/src/lib/typography.ts`; theme vars via `packages/ui/src/lib/theme/`.
- No new deps unless asked.
- Never add secrets (`.env`, keys) or log sensitive data.
### OpenCode SDK Integration (UI)
In `packages/ui/src/lib/opencode/`: client.ts wrapper around `@opencode-ai/sdk` with directory-aware API calls, SDK methods (session.*, message.*, agent.*, provider.*, config.*, project.*, path.*), AsyncGenerator SSE streaming (2 retry attempts, 500ms->8s backoff), automatic directory parameter injection.
In `packages/ui/src/hooks/`: useEventStream.ts for real-time SSE connection management.
### Web Runtime (server/CLI)
Express server and CLI in `packages/web`: API adapters in `packages/web/src/api`, server in `packages/web/server/index.js` (git/terminal/config), UI bundle imported from `@openchamber/ui`.
### Desktop Runtime (Tauri)
Native desktop app in `packages/desktop`: Tauri backend in `src-tauri/` (Rust), frontend API adapters in `src/api/` (settings, permissions, diagnostics, files, git, terminal, notifications, tools, updater), bridge layer in `src/lib/` for Tauri IPC communication.
### VS Code Extension Runtime
Extension in `packages/vscode`: Extension entry in `src/` (ChatViewProvider, bridge, theme), webview API adapters in `webview/api/` (bridge, editor, files, permissions, settings, tools), bootstrap script in `webview/main.tsx` that loads shared UI.
## Development Commands
### Code Validation
Always validate changes:
```bash
bun run type-check # TypeScript validation
bun run lint # ESLint checks
bun run build # Production build
```
### Building
```bash
bun run build # Build all packages
bun run desktop:build # Build desktop app
bun run vscode:build # Build VS Code extension
```
## Communication & Output Discipline (MANDATORY)
- Default to brevity. Responses must be as short as possible (until you suggesting plan) while remaining correct.
- Do not narrate internal reasoning, step-by-step thinking, or deliberation.
## Key Patterns
### Settings View Architecture
Full-screen settings view (`SettingsView.tsx`) with tabbed navigation. Desktop: sidebar + page side-by-side with resizable sidebar. Mobile: drill-down pattern (sidebar → page with back button). Tabs: OpenChamber, Agents, Commands, Providers, Git Identities.
Each settings section has a sidebar (`*Sidebar.tsx`) and page (`*Page.tsx`) in `packages/ui/src/components/sections/`.
**Shared boilerplate components** in `packages/ui/src/components/sections/shared/`:
- `SettingsSidebarLayout` - wrapper with bg, scroll, header/footer slots
- `SettingsSidebarHeader` - "Total X" + add button
- `SettingsSidebarItem` - list item with title, metadata, selection, optional actions dropdown
- `SettingsPageLayout` - centered max-w-3xl scrollable container
- `SettingsSection` - section with optional title, description, divider
Use these as reference when adding new settings sections. See `index.ts` for usage examples.
### File Attachments
Drag-and-drop upload with 10MB limit (`FileAttachment.tsx`), Data URL encoding, type validation with fallbacks, integrated via `useFileStore.addAttachedFile()`.
### Theme System
In `packages/ui/src/lib/theme/`: TypeScript-based themes (Flexoki Light and Dark), CSS variable generation, component-specific theming, Tailwind CSS v4 integration.
### Typography System
In `packages/ui/src/lib/`: Semantic typography with 6 CSS variables, theme-independent scales. **CRITICAL**: Always use semantic typography classes, never hardcoded font sizes.
### Streaming Architecture
SDK-managed SSE with AsyncGenerator, temp->real session ID swap (optimistic UI), pendingAssistantParts buffering, empty-response detection via `window.__opencodeDebug`.
## Development Guidelines
### Lint & Type Safety
- Never land code that introduces new ESLint or TypeScript errors
- Run `bun run lint` and `bun run type-check` before finalizing changes
- Adding `eslint-disable` requires justification in a comment explaining why typing is impossible
- Do **not** use `any` or `unknown` casts as escape hatches; build narrow adapter interfaces instead
- Refactors or new features must keep existing lint/type baselines green
### Theme Integration
- Check theme definitions before adding colors or font sizes to new components
- Always use theme-defined typography classes, never hardcoded font sizes
- Reference existing theme colors instead of adding new ones
- Ensure new components support both light and dark themes
- Use theme-generated CSS variables for dynamic styling
### Code Standards
- **Functional components**: Exclusive use of function components with hooks
- **Custom hooks**: Extract logic for reusability
- **Type-first development**: Comprehensive TypeScript usage
- opencode repo is in ../opencode dir from this pwd dir check the codebase for any api undersatning . dont change opencode dir .
- **Component composition**: Prefer composition over inheritance
## Feature Implementation Map
### Directory & File System
`packages/ui/src/components/session/`: DirectoryTree, DirectoryExplorerDialog
`packages/ui/src/stores/`: DirectoryStore
Backend: `packages/web/server/index.js` with `listLocalDirectory()`, `getFilesystemHome()`
### Session Switcher
`SessionSwitcherDialog.tsx`: Collapsible date groups, mobile parity with MobileOverlayPanel, Git worktree and shared session chips, streaming indicators.
### Settings & Configuration
`packages/ui/src/components/sections/`: AgentsPage, CommandsPage, GitIdentitiesPage, ProvidersPage, SessionsPage, OpenChamberPage
`packages/ui/src/components/sections/shared/`: Boilerplate components for new sections
Related stores: useAgentsStore, useCommandsStore, useConfigStore, useGitIdentitiesStore
### Git Operations
`packages/ui/src/components/views/`: GitView, DiffView
`packages/ui/src/stores/`: useGitIdentitiesStore
Backend: `packages/ui/src/lib/gitApi.ts` + `packages/web/server/index.js` (simple-git wrapper)
### Terminal
`packages/ui/src/components/views/`: TerminalView
`packages/ui/src/components/terminal/`: TerminalViewport (ghostty-web with FitAddon)
`packages/ui/src/stores/`: useTerminalStore
Backend: `packages/web/server/index.js` (bun-pty wrapper with SSE)
### Theme System
`packages/ui/src/lib/theme/`: themes (2 definitions), cssGenerator, syntaxThemeGenerator
`packages/ui/src/components/providers/`: ThemeProvider
### Mobile & UX
`packages/ui/src/components/ui/`: MobileOverlayPanel
`packages/ui/src/hooks/`: useEdgeSwipe, useChatScrollManager
## Recent changes
- Releases + high-level changes: `CHANGELOG.md`
- Recent commits: `git log --oneline` (latest tags: `v1.4.6`, `v1.4.5`)