docs: add HANDOFF.md with project status and memory notes

HANDOFF.md

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+# Handoff: OpenCode Mobile App
+
+## Status: CUA E2E Tests Working, v0.2.0 Release Triggered
+
+## What Was Done
+
+### 1. CUA (Computer-Use Agent) E2E Test Infrastructure
+- Built `scripts/android-cua-smoke.py` — a vision-LLM-powered Android E2E test that drives the app via ADB screenshots + AI actions
+- Two scenarios pass reliably: `send_message` (7 steps) and `multi_turn` (13 steps)
+- Added custom `{"type": "send"}` action that auto-locates the send button via uiautomator XML (solves coordinate accuracy issues with vision models)
+- Uses **Azure AI Services gpt-5.4** for vision inference
+
+### 2. CI/CD
+- `.github/workflows/cua-smoke.yml` — GitHub Actions workflow for emulator + CUA test
+- `.github/workflows/build.yml` — Builds APK, creates GitHub Release on tag push
+- `.github/workflows/publish-play-store.yml` — Fastlane Play Store publish
+- GitHub secrets set: `AZURE_OPENAI_API_KEY`, `AZURE_OPENAI_ENDPOINT`
+- Tagged `v0.2.0` — CI build + release workflow triggered
+
+### 3. App Features (prior sessions)
+- SSE reconnect with exponential backoff
+- Notification support
+- Message deduplication
+- Biometric auth gate (disabled on emulator)
+- Server connection management UI
+
+## Key Technical Details
+
+### Azure AI Services (LLM API)
+- **Correct endpoint**: `https://info-mjnxtt51-eastus2.cognitiveservices.azure.com`
+- **DO NOT USE**: `vibe-dev-ai.cognitiveservices.azure.com` (has no deployments, only model catalog)
+- **Env file**: `~/.env.d/azure-openai.env`
+- **Available models**: gpt-5.4, gpt-5.2, gpt-5.1, gpt-4.1, grok-4, deepseek-r1, kimi-k2.5
+- **API quirk**: Use `max_completion_tokens` (NOT `max_tokens`) for gpt-5.x models
+
+### Android Emulator
+- SDK at `/tmp/android-sdk/` (may need reinstall if /tmp is cleared)
+- AVD name: `test`, API 34 x86_64, KVM required
+- Start: `emulator -avd test -no-window -no-audio -no-boot-anim -gpu swiftshader_indirect -no-snapshot`
+- Package: `ai.opencode.mobile`
+
+### CUA Script Learnings
+- Vision models (gpt-5.4) consistently mis-estimate Y coordinates by ~80px for bottom-of-screen elements
+- Solution: `{"type": "send"}` action uses uiautomator XML to find the rightmost clickable element in the bottom bar
+- Enter key inserts newline in this app (doesn't send) — model must dismiss keyboard + tap send button
+- Screen resolution (1080x2400) included in prompt context helps coordinate accuracy
+- Screenshot retry (3 attempts, 30s timeout) needed for emulator under load
+
+### Server Connection
+- OpenCode server: `100.108.64.76:4096` (Tailscale, hostname `openclaw-dev-1`)
+- Must dismiss keyboard before tapping Connect button (keyboard obscures it)
+- Model: `gpt-5.3-chat-latest` (via GitHub Copilot provider)
+
+## What's Next
+
+1. **Verify v0.2.0 release** — check CI at https://github.com/dzianisv/opencode-mobile/actions
+2. **Run CUA in CI** — the `cua-smoke.yml` workflow needs a running opencode server to connect to (currently targets Tailscale IP which won't be reachable from GitHub runners). Options:
+   - Mock server in CI
+   - Use a public opencode server endpoint
+   - Run as self-hosted runner on the dev VM
+3. **Add accessibility labels** — add `content-desc="Send"` to the send button in the app for better CUA reliability
+4. **More scenarios** — settings toggle, reconnect after server restart, slash commands
+
+## Repo & Auth
+- Repo: `dzianisv/opencode-mobile`
+- GitHub auth: `source ~/.env.d/github-dzianisv.env`
+- Upstream issue: `anomalyco/opencode#10288`