test(activation): add Maestro E2E coverage for the activation flow

Adds deterministic end-to-end coverage for first-open -> telemetry consent
-> server URL entry -> connect -> send first message -> receive reply,
targeting the 0%-7-day-retention investigation (GitHub issue #76).

- tests/fixtures/mock-opencode-server.ts: dependency-free HTTP+SSE stub
  matching the REAL client protocol (src/lib/sdk.ts) — REST + a single
  long-lived GET /global/event SSE stream, no WebSocket. Supports a
  --fail-auth mode that 401s every request to exercise the connect-time
  auth-failure class.
- .maestro/flows/activation-positive.yaml: consent -> quick connect ->
  new session -> send message -> assert streamed reply renders, with a
  screenshot at every step (positive-S1..S8).
- .maestro/flows/activation-negative-401.yaml: same setup against the
  --fail-auth server, asserts Quick Connect's existing "Connection Failed"
  alert is shown (not silently swallowed) and that the connection is not
  saved. Flags in comments that Advanced-mode Save (handleAdvancedSave)
  still has no testConnection() check and is a known, uncovered gap.
- testID props added (no restructuring) to the screens/components the
  flows drive: TelemetryConsentModal, connection/add.tsx, tabs/index.tsx,
  session/[id].tsx, MessageBubble.
- .github/workflows/activation-e2e.yml: new CI job — Android emulator via
  reactivecircus/android-emulator-runner, builds the debug-signed APK,
  starts both mock server instances, runs both Maestro flows, uploads
  screenshots via actions/upload-artifact. Kept separate from the existing
  vision-driven cua-smoke.yml, which needs a live server + LLM and isn't
  suited to tight deterministic regression assertions.
- .gitignore: Maestro takeScreenshot output is never committed.

Verified locally: mock server exercised standalone via curl (health,
project/current, path, session create, SSE event ordering, message
persistence) in both normal and --fail-auth modes; both Maestro flow
files validated as well-formed YAML; tsc --noEmit clean on all changed
files. No lint script exists in this repo (N/A). Full emulator execution
was not run — no Android SDK/emulator available in this environment.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NJKAQ6HAikWGQK7PGZ5Y4E

.maestro/flows/activation-negative-401.yaml

@@ -0,0 +1,68 @@
+appId: cc.agentlabs.opencode
+name: Activation - negative path (connect-time 401 must surface a visible error)
+---
+# Negative activation flow — regression test for the GitHub issue #76 failure
+# class: a connect-time 401 from the server must produce a visible, actionable
+# error, never a silent failure.
+#
+# Quick Connect (app/connection/add.tsx handleQuickConnect) calls
+# testConnection() -> client.global.health() BEFORE saving the connection.
+# When that call fails (any thrown error, including a 401 API error), the
+# screen runs probeConnection() and shows a native Alert titled
+# "Connection Failed" with the underlying error text — this is the CURRENT,
+# already-correct behavior we are locking in with this test.
+#
+# Known gap (see report): Advanced-mode "Save Connection" (handleAdvancedSave)
+# does NOT call testConnection() at all — it saves the connection and
+# navigates back regardless of server reachability, so a 401 there is
+# currently silent. That gap is not covered by this flow (Quick Connect is the
+# only entry point that already does the right thing) — flagged in the E2E
+# report as follow-up work, not silently fixed here.
+#
+# The CI job starts `node tests/fixtures/mock-opencode-server.ts --port 4097
+# --fail-auth` on the runner host BEFORE this flow runs, so every request the
+# app makes to it (including /global/health) returns HTTP 401.
+
+- launchApp:
+    clearState: true
+- assertVisible:
+    id: "telemetry-consent-card"
+- tapOn:
+    id: "telemetry-decline-button"
+- takeScreenshot: negative-S1_consent_dismissed
+
+- assertVisible:
+    text: "No Connection"
+- tapOn:
+    id: "add-connection-button"
+- takeScreenshot: negative-S2_add_connection_form
+
+- tapOn:
+    id: "connect-ip-input"
+- inputText: "10.0.2.2"
+- tapOn:
+    id: "connect-port-input"
+- eraseText
+- inputText: "4097"
+- hideKeyboard
+- takeScreenshot: negative-S3_401_server_url_entered
+- tapOn:
+    id: "connect-submit-button"
+
+- extendedWaitUntil:
+    visible:
+      text: "Connection Failed"
+    timeout: 20000
+- assertVisible:
+    text: "Connection Failed"
+- assertVisible:
+    text: "401"
+- takeScreenshot: negative-S4_visible_error_alert
+
+# The connection must NOT have been silently saved: dismiss the alert and
+# confirm we are still on the empty/no-connection state, not a fake
+# "connected" screen.
+- tapOn: "OK"
+- assertVisible:
+    text: "No Connection"
+- takeScreenshot: negative-S5_still_disconnected_after_dismiss

.maestro/flows/activation-positive.yaml

@@ -0,0 +1,74 @@
+appId: cc.agentlabs.opencode
+name: Activation - positive path (consent -> connect -> send -> reply)
+---
+# Positive activation flow: first launch -> telemetry consent -> quick connect
+# to the mock opencode server (tests/fixtures/mock-opencode-server.ts, run
+# normally on the port below) -> connected indicator -> new session -> send a
+# message -> assert the streamed canned reply renders.
+#
+# The CI job starts `node tests/fixtures/mock-opencode-server.ts --port 4096`
+# on the runner host BEFORE this flow runs. The Android emulator reaches the
+# runner host via the standard emulator alias 10.0.2.2.
+
+- launchApp:
+    clearState: true
+- takeScreenshot: positive-S1_launch_consent_modal
+- assertVisible:
+    id: "telemetry-consent-card"
+- tapOn:
+    id: "telemetry-decline-button"
+
+- assertVisible:
+    text: "No Connection"
+- takeScreenshot: positive-S2_empty_state
+- tapOn:
+    id: "add-connection-button"
+
+- assertVisible:
+    id: "connect-ip-input"
+- takeScreenshot: positive-S3_add_connection_form
+- tapOn:
+    id: "connect-ip-input"
+- inputText: "10.0.2.2"
+- tapOn:
+    id: "connect-port-input"
+- eraseText
+- inputText: "4096"
+- hideKeyboard
+- takeScreenshot: positive-S4_server_url_entered
+- tapOn:
+    id: "connect-submit-button"
+
+- extendedWaitUntil:
+    visible:
+      id: "connection-status-dot"
+    timeout: 20000
+- assertVisible:
+    id: "connection-status-dot"
+- takeScreenshot: positive-S5_connected
+
+- tapOn:
+    id: "new-session-fab"
+- extendedWaitUntil:
+    visible:
+      id: "chat-message-input"
+    timeout: 15000
+- takeScreenshot: positive-S6_session_opened
+
+- tapOn:
+    id: "chat-message-input"
+- inputText: "Hello from the activation e2e test"
+- hideKeyboard
+- takeScreenshot: positive-S7_message_typed
+- tapOn:
+    id: "chat-send-button"
+
+- extendedWaitUntil:
+    visible:
+      text: "Hello from the mock opencode server"
+    timeout: 20000
+- assertVisible:
+    id: "chat-bubble-assistant"
+- assertVisible:
+    text: "Hello from the mock opencode server"
+- takeScreenshot: positive-S8_reply_received