fix(android): bump versionName to 0.4.2 to match app.json; add ownership context

versionName in android/app/build.gradle was stale at 0.4.1 while app.json /
package.json declare 0.4.2, so CI-built APKs reported the wrong version string.
Align it. Also adds context.md (goal/design/plan/progress) and ignores the
generated index.android.bundle artifact.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

context.md

@@ -0,0 +1,47 @@
+# OpenCode Mobile — Ownership Context
+
+App: `cc.agentlabs.opencode` (OpenCode Mobile). Expo/React Native Android client
+for a user self-hosted opencode AI coding server. Owner: VIBE TECHNOLOGIES, LLC.
+
+## GOAL (verbatim)
+1. No bugs — opencode mobile works end to end.
+2. Publish on F-Droid (if not).
+3. Publish on Google Play (if not).
+4. Use App-Store-Optimization + growth-hacking skills to optimize store listings.
+5. Reach 1k downloads.
+6. Keep goal/design/plan/progress in this file.
+
+Success = published + functional on BOTH stores AND 1k verified downloads.
+
+## DESIGN / ARCHITECTURE NOTES
+- Sessions list reads home-scoped (`session.list({roots:true})` via
+  `clientForDirectory(serverHome)`) when connection has no explicit directory.
+  Create must use the SAME scope or new sessions are invisible (bug #10).
+- CUA smoke test = Android emulator + vision-LLM driving the app, with a real
+  opencode server on the runner host (10.0.2.2:4096). This is the E2E gate.
+- Telemetry (Sentry) is opt-in, default OFF.
+
+## CURRENT STATE (2026-06-01)
+- tsc: clean. Build APK CI: green. No open PRs.
+- v0.4.2 APK public (GitHub release). Play: Draft, blocked on human App-content
+  console declarations (answers pre-drafted in distribution/PLAY-APP-CONTENT-ANSWERS.md).
+- F-Droid: mainline MR #39530 filed (real path); self-hosted repo deprioritized
+  (androguard v2+v3 dup-signature bug).
+- BUG #10 (sessions empty after connect/create): fix committed a536466. Pre-fix
+  smoke (run 26786055765) reproduced it exactly. Fix smoke run cancelled (server
+  install hang) → **UNVERIFIED**. Re-verifying now.
+- Version mismatch: package.json 0.4.2 vs android/app/build.gradle versionName 0.4.1.
+
+## PLAN
+- [ ] P1 Verify #10 fix via re-dispatched CUA smoke (E2E green).
+- [ ] P1 Reconcile version (package.json vs gradle) — pick single source of truth.
+- [ ] P2 Scan for other E2E bugs (connect/create/send/abort scopes).
+- [ ] P3 Play: human completes App-content + production rollout (gated).
+- [ ] P3 F-Droid: track MR #39530 (gated on maintainer review).
+- [ ] P4 ASO: refine listing copy/keywords with ASO skill.
+- [ ] P4 Growth: execute launch posts in distribution/launch/ for downloads.
+
+## PROGRESS LOG
+- 2026-06-01: Resumed under /take-ownership. tsc clean, build green.
+  Confirmed #10 is a real reproduced bug; fix logic verified sound (create+list
+  share home scope). Re-dispatching smoke. Spotted version mismatch. Wrote this file.