feat(daemon): Add UPSD (NUT) protocol support, Proxmox VM shutdown action, pause/resume monitoring, and network-loss/unreachable handling; bump config version to 4.2

ts/migrations/index.ts

@@ -9,3 +9,4 @@ export { MigrationRunner } from './migration-runner.ts';
 export { MigrationV1ToV2 } from './migration-v1-to-v2.ts';
 export { MigrationV3ToV4 } from './migration-v3-to-v4.ts';
 export { MigrationV4_0ToV4_1 } from './migration-v4.0-to-v4.1.ts';
+export { MigrationV4_1ToV4_2 } from './migration-v4.1-to-v4.2.ts';

ts/migrations/migration-runner.ts

@@ -2,6 +2,7 @@ import { BaseMigration } from './base-migration.ts';
 import { MigrationV1ToV2 } from './migration-v1-to-v2.ts';
 import { MigrationV3ToV4 } from './migration-v3-to-v4.ts';
 import { MigrationV4_0ToV4_1 } from './migration-v4.0-to-v4.1.ts';
+import { MigrationV4_1ToV4_2 } from './migration-v4.1-to-v4.2.ts';
 import { logger } from '../logger.ts';
 
 /**
@@ -19,7 +20,7 @@ export class MigrationRunner {
       new MigrationV1ToV2(),
       new MigrationV3ToV4(),
       new MigrationV4_0ToV4_1(),
-      // Add future migrations here (v4.3, v4.4, etc.)
+      new MigrationV4_1ToV4_2(),
     ];
 
     // Sort by version order to ensure they run in sequence

ts/migrations/migration-v4.1-to-v4.2.ts

@@ -0,0 +1,43 @@
+import { BaseMigration } from './base-migration.ts';
+import { logger } from '../logger.ts';
+
+/**
+ * Migration from v4.1 to v4.2
+ *
+ * Changes:
+ * 1. Adds `protocol: 'snmp'` to all existing UPS devices (explicit default)
+ * 2. Bumps version from '4.1' to '4.2'
+ */
+export class MigrationV4_1ToV4_2 extends BaseMigration {
+  readonly fromVersion = '4.1';
+  readonly toVersion = '4.2';
+
+  shouldRun(config: Record<string, unknown>): boolean {
+    return config.version === '4.1';
+  }
+
+  migrate(config: Record<string, unknown>): Record<string, unknown> {
+    logger.info(`${this.getName()}: Adding protocol field to UPS devices...`);
+
+    const devices = (config.upsDevices as Array<Record<string, unknown>>) || [];
+    const migratedDevices = devices.map((device) => {
+      // Add protocol: 'snmp' if not already present
+      if (!device.protocol) {
+        device.protocol = 'snmp';
+        logger.dim(`    → ${device.name}: Set protocol to 'snmp'`);
+      }
+      return device;
+    });
+
+    const result = {
+      ...config,
+      version: this.toVersion,
+      upsDevices: migratedDevices,
+    };
+
+    logger.success(
+      `${this.getName()}: Migration complete (${migratedDevices.length} devices updated)`,
+    );
+    return result;
+  }
+}