v0.5.0: NomadArch - Binary-Free Mode Release

Features:
- Binary-Free Mode: No OpenCode binary required
- NomadArch Native mode with free Zen models
- Native session management
- Provider routing (Zen, Qwen, Z.AI)
- Fixed MCP connection with explicit connectAll()
- Updated installers and launchers for all platforms
- UI binary selector with Native option

Free Models Available:
- GPT-5 Nano (400K context)
- Grok Code Fast 1 (256K context)
- GLM-4.7 (205K context)
- Doubao Seed Code (256K context)
- Big Pickle (200K context)

PROGRESS.md

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+# CodeNomad - Development Progress
+
+## Completed Tasks
+
+### Task 001: Project Setup ✅
+- Set up Electron + SolidJS + Vite + TypeScript
+- Configured TailwindCSS v3 (downgraded from v4 for electron-vite compatibility)
+- Build pipeline with electron-vite
+- Application window management
+- Application menu with keyboard shortcuts
+
+### Task 002: Empty State UI & Folder Selection ✅
+- Empty state component with styled UI
+- Native folder picker integration
+- IPC handlers for folder selection
+- UI state management with SolidJS signals
+- Loading states with spinner
+- Keyboard shortcuts (Cmd/Ctrl+N)
+
+### Task 003: Process Manager ✅
+- Process spawning: `opencode serve --port 0`
+- Port detection from stdout (regex: `opencode server listening on http://...`)
+- Process lifecycle management (spawn, kill, cleanup)
+- IPC communication for instance management
+- Instance state tracking (starting → ready → stopped/error)
+- Auto-cleanup on app quit
+- Error handling & timeout protection (10s)
+- Graceful shutdown (SIGTERM → SIGKILL)
+
+### Task 004: SDK Integration ✅
+- Installed `@opencode-ai/sdk` package
+- SDK manager for client lifecycle
+- Session fetching from OpenCode server
+- Agent fetching (`client.app.agents()`)
+- Provider fetching (`client.config.providers()`)
+- Session store with SolidJS signals
+- Instance store updated with SDK client
+- Loading states for async operations
+- Error handling for network failures
+
+### Task 005: Session Picker Modal ✅
+- Modal dialog with Kobalte Dialog
+- Lists ALL existing sessions (scrollable)
+- Session metadata display (title, relative timestamp)
+- Native HTML select dropdown for agents
+- Auto-selects first agent by default
+- Create new session with selected agent
+- Cancel button stops instance and closes modal
+- Resume session on click
+- Empty state for no sessions
+- Loading state for agents
+- Keyboard navigation (Escape to cancel)
+
+## Current State
+
+**Working Features:**
+- ✅ App launches with empty state
+- ✅ Folder selection via native dialog
+- ✅ OpenCode server spawning per folder
+- ✅ Port extraction and process tracking
+- ✅ SDK client connection to running servers
+- ✅ Session list fetching and display
+- ✅ Agent and provider data fetching
+- ✅ Session picker modal on instance creation
+- ✅ Resume existing sessions
+- ✅ Create new sessions with agent selection
+
+**File Structure:**
+```
+packages/opencode-client/
+├── electron/
+│   ├── main/
+│   │   ├── main.ts (window + IPC setup)
+│   │   ├── menu.ts (app menu)
+│   │   ├── ipc.ts (instance IPC handlers)
+│   │   └── process-manager.ts (server spawning)
+│   └── preload/
+│       └── index.ts (IPC bridge)
+├── src/
+│   ├── components/
+│   │   ├── empty-state.tsx
+│   │   └── session-picker.tsx
+│   ├── lib/
+│   │   └── sdk-manager.ts
+│   ├── stores/
+│   │   ├── ui.ts
+│   │   ├── instances.ts
+│   │   └── sessions.ts
+│   ├── types/
+│   │   ├── electron.d.ts
+│   │   ├── instance.ts
+│   │   └── session.ts
+│   └── App.tsx
+├── tasks/
+│   ├── done/ (001-005)
+│   └── todo/ (006+)
+└── docs/
+```
+
+## Next Steps
+
+### Task 006: Message Stream UI (NEXT)
+- Message display component
+- User/assistant message rendering
+- Markdown support with syntax highlighting
+- Tool use visualization
+- Auto-scroll behavior
+
+### Task 007: Prompt Input
+- Text input with multi-line support
+- Send button
+- File attachment support
+- Keyboard shortcuts (Enter for new line; Cmd+Enter/Ctrl+Enter to send)
+
+### Task 008: Instance Tabs
+- Tab bar for multiple instances
+- Switch between instances
+- Close instance tabs
+- "+" button for new instance
+
+## Build & Test
+
+```bash
+cd packages/opencode-client
+bun run build
+bunx electron .
+```
+
+**Known Issue:**
+- Dev mode (`bun dev`) fails due to Bun workspace hoisting + electron-vite
+- Workaround: Use production builds for testing
+
+## Dependencies
+
+- Electron 38
+- SolidJS 1.8
+- TailwindCSS 3.x
+- @opencode-ai/sdk
+- @kobalte/core (Dialog)
+- Vite 5
+- TypeScript 5
+
+## Stats
+
+- **Tasks completed:** 5/5 (Phase 1)
+- **Files created:** 18+
+- **Lines of code:** ~1500+
+- **Build time:** ~7s
+- **Bundle size:** 152KB (renderer)