chore: add Claude Code parity roadmap

ROADMAP.md

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+# OpenCode Feature Roadmap (Claude Code Parity)
+
+This roadmap outlines the 11 major features required to bring OpenCode up to parity with the leaked Claude Code capabilities. Features will be implemented in order.
+
+## Phase 1: Core Agentic Capabilities
+- [ ] **1. Native Desktop Control (Computer Use Tool)**
+  Integrate `@nut-tree/nut-js` to replicate Anthropic's private `@ant/computer-use-swift`. Enables native OS control: mouse movement, keystrokes, and screen capture outside the terminal.
+- [ ] **2. Headless Browser Automation (WebBrowserTool)**
+  Integrate Playwright to allow OpenCode to navigate SPAs, execute JavaScript, click buttons, and read post-rendered DOM (closing the gap with `webfetch`/`websearch`).
+- [ ] **3. Dynamic Agent Swarms (SpawnMultiAgentTool)**
+  Implement Bun's native background workers to allow the main thread to spawn independent sub-agents for parallel task execution across multiple files or directories.
+- [ ] **4. Long-Term Semantic Memory (SessionMemory)**
+  Implement a local SQLite vector store/database to persist user preferences, project architecture rules, and API keys across different terminal sessions.
+- [ ] **5. Strict Zod-Based Permission Gates (PermissionRouter)**
+  Implement a strict Zod schema layer for tool validation and a permission router with flags (`isReadOnly`, `isDestructive`). Add a secondary LLM classifier for automated risk assessment.
+
+## Phase 2: Experimental & Background Systems
+- [ ] **6. Buddy (Virtual Pet)**
+  Add a React/Ink component for an ASCII companion (duck, dragon, axolotl) that sits beside input and reacts dynamically to LLM confidence scores or bash success/failure rates.
+- [ ] **7. Auto-Dream & AFK Mode**
+  Add an idle timer that spawns a background worker to consolidate session memory and review past context without burning active tokens while the user is away.
+- [ ] **8. KAIROS & Daemon Mode (Proactive Agent)**
+  Extend the existing `--serve` headless mode into a true daemon that uses `cron` to wake up, fetch GitHub PRs, and proactively open review sessions.
+- [ ] **9. Voice Mode**
+  Integrate local Whisper (or API) for speech-to-text input, and TTS for terminal audio output.
+- [ ] **10. Bridge / Remote Control & Peer Discovery**
+  Enhance the existing `opencode attach` with mDNS broadcasting to allow Unix domain socket peer discovery and remote desktop environment sharing.
+- [ ] **11. Specialized Modes (/advisor, /bughunter, /teleport)**
+  Add new slash commands. Implement `/advisor` by wrapping LLM diff outputs in an evaluation loop with a secondary model for QA grading.