feat(android): implement Phase 1 cold start recovery

Implements cold start recovery for missed notifications and future alarm
verification/rescheduling as specified in Phase 1 directive.

Changes:
- Add ReactivationManager.kt with cold start recovery logic
- Integrate recovery into DailyNotificationPlugin.load()
- Fix NotifyReceiver to always store NotificationContentEntity for recovery
- Add Phase 1 emulator testing guide and verification doc
- Add test-phase1.sh automated test harness

Recovery behavior:
- Detects missed notifications on app launch
- Marks missed notifications in database
- Verifies future alarms are scheduled in AlarmManager
- Reschedules missing future alarms
- Completes within 2-second timeout (non-blocking)

Test harness:
- Automated script with 4 test cases
- UI prompts for plugin configuration
- Log parsing for recovery results
- Verified on Pixel 8 API 34 emulator

Related:
- Implements: android-implementation-directive-phase1.md
- Requirements: docs/alarms/03-plugin-requirements.md §3.1.2
- Testing: docs/alarms/PHASE1-EMULATOR-TESTING.md
- Verification: docs/alarms/PHASE1-VERIFICATION.md

docs/android-implementation-directive-phase1.md

@@ -159,6 +159,8 @@ class ReactivationManager(private val context: Context) {
 
 ### 2.3 Cold Start Recovery
 
+**Platform Reference**: [Android §2.1.4](./alarms/01-platform-capability-reference.md#214-alarms-can-be-restored-after-app-restart) - Alarms can be restored after app restart
+
 ```kotlin
 /**
  * Perform cold start recovery
@@ -622,6 +624,23 @@ override fun load() {
 
 **Pass Criteria**: Invalid data handled gracefully.
 
+### 8.4 Emulator Test Harness
+
+The manual tests in §8.1–§8.3 are codified in the script `test-phase1.sh` in:
+
+```bash
+test-apps/android-test-app/test-phase1.sh
+```
+
+**Status:**
+
+* ✅ Script implemented and polished
+* ✅ Verified on Android Emulator (Pixel 8 API 34) on 27 November 2025
+* ✅ Correctly recognizes both `verified>0` and `rescheduled>0` as PASS cases
+* ✅ Treats `DELETE_FAILED_INTERNAL_ERROR` on uninstall as non-fatal
+
+For regression testing, use `PHASE1-EMULATOR-TESTING.md` + `test-phase1.sh` as the canonical procedure.
+
 ---
 
 ## 9. Implementation Checklist
@@ -676,9 +695,11 @@ override fun load() {
 
 ## Related Documentation
 
+- [Unified Alarm Directive](./alarms/000-UNIFIED-ALARM-DIRECTIVE.md) - Master coordination document
+- [Plugin Requirements](./alarms/03-plugin-requirements.md) - Requirements this phase implements
+- [Platform Capability Reference](./alarms/01-platform-capability-reference.md) - OS-level facts
+- [Plugin Behavior Exploration](./alarms/02-plugin-behavior-exploration.md) - Test scenarios
 - [Full Implementation Directive](./android-implementation-directive.md) - Complete scope (all phases)
-- [Exploration Findings](./exploration-findings-initial.md) - Gap analysis
-- [Plugin Requirements](./plugin-requirements-implementation.md) - Requirements
 
 ---