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

android/src/main/java/com/timesafari/dailynotification/DailyNotificationPlugin.kt

@@ -97,9 +97,14 @@ open class DailyNotificationPlugin : Plugin() {
             }
         db = DailyNotificationDatabase.getDatabase(context)
             Log.i(TAG, "Daily Notification Plugin loaded successfully")
+            
+            // Phase 1: Perform app launch recovery (cold start only)
+            // Runs asynchronously, non-blocking, with timeout
+            val reactivationManager = ReactivationManager(context)
+            reactivationManager.performRecovery()
         } catch (e: Exception) {
             Log.e(TAG, "Failed to initialize Daily Notification Plugin", e)
-            // Don't throw - allow plugin to load but database operations will fail gracefully
+            // Don't throw - allow plugin to load even if recovery fails
         }
     }