fix(typescript): tighten TypeScript null safety and error handling across backend and ops UI

ts/cache/classes.cache.cleaner.ts

@@ -48,14 +48,14 @@ export class CacheCleaner {
     this.isRunning = true;
 
     // Run cleanup immediately on start
-    this.runCleanup().catch((error) => {
-      logger.log('error', `Initial cache cleanup failed: ${error.message}`);
+    this.runCleanup().catch((error: unknown) => {
+      logger.log('error', `Initial cache cleanup failed: ${(error as Error).message}`);
     });
 
     // Schedule periodic cleanup
     this.cleanupInterval = setInterval(() => {
-      this.runCleanup().catch((error) => {
-        logger.log('error', `Cache cleanup failed: ${error.message}`);
+      this.runCleanup().catch((error: unknown) => {
+        logger.log('error', `Cache cleanup failed: ${(error as Error).message}`);
       });
     }, this.options.intervalMs);
 
@@ -113,8 +113,8 @@ export class CacheCleaner {
           `Cache cleanup completed. Deleted ${totalDeleted} expired documents. ${summary || 'No deletions.'}`
         );
       }
-    } catch (error) {
-      logger.log('error', `Cache cleanup error: ${error.message}`);
+    } catch (error: unknown) {
+      logger.log('error', `Cache cleanup error: ${(error as Error).message}`);
       throw error;
     }
   }
@@ -138,14 +138,14 @@ export class CacheCleaner {
         try {
           await doc.delete();
           deletedCount++;
-        } catch (deleteError) {
-          logger.log('warn', `Failed to delete expired document: ${deleteError.message}`);
+        } catch (deleteError: unknown) {
+          logger.log('warn', `Failed to delete expired document: ${(deleteError as Error).message}`);
         }
       }
 
       return deletedCount;
-    } catch (error) {
-      logger.log('error', `Error cleaning collection: ${error.message}`);
+    } catch (error: unknown) {
+      logger.log('error', `Error cleaning collection: ${(error as Error).message}`);
       return 0;
     }
   }

ts/cache/classes.cached.document.ts

@@ -22,7 +22,7 @@ export abstract class CachedDocument<T extends CachedDocument<T>> extends plugin
    * Timestamp when the document expires and should be cleaned up
    * NOTE: Subclasses must add @svDb() decorator
    */
-  public expiresAt: Date;
+  public expiresAt!: Date;
 
   /**
    * Timestamp of last access (for LRU-style eviction if needed)

ts/cache/classes.cachedb.ts

@@ -23,8 +23,8 @@ export interface ICacheDbOptions {
 export class CacheDb {
   private static instance: CacheDb | null = null;
 
-  private localTsmDb: plugins.smartmongo.LocalTsmDb;
-  private smartdataDb: plugins.smartdata.SmartdataDb;
+  private localTsmDb!: plugins.smartmongo.LocalTsmDb;
+  private smartdataDb!: plugins.smartdata.SmartdataDb;
   private options: Required<ICacheDbOptions>;
   private isStarted: boolean = false;
 
@@ -89,8 +89,8 @@ export class CacheDb {
 
       this.isStarted = true;
       logger.log('info', `CacheDb started at ${this.options.storagePath}`);
-    } catch (error) {
-      logger.log('error', `Failed to start CacheDb: ${error.message}`);
+    } catch (error: unknown) {
+      logger.log('error', `Failed to start CacheDb: ${(error as Error).message}`);
       throw error;
     }
   }
@@ -116,8 +116,8 @@ export class CacheDb {
 
       this.isStarted = false;
       logger.log('info', 'CacheDb stopped');
-    } catch (error) {
-      logger.log('error', `Error stopping CacheDb: ${error.message}`);
+    } catch (error: unknown) {
+      logger.log('error', `Error stopping CacheDb: ${(error as Error).message}`);
       throw error;
     }
   }

ts/cache/documents/classes.cached.email.ts

@@ -35,55 +35,55 @@ export class CachedEmail extends CachedDocument<CachedEmail> {
    */
   @plugins.smartdata.unI()
   @plugins.smartdata.svDb()
-  public id: string;
+  public id!: string;
 
   /**
    * Email message ID (RFC 822 Message-ID header)
    */
   @plugins.smartdata.svDb()
-  public messageId: string;
+  public messageId!: string;
 
   /**
    * Sender email address (envelope from)
    */
   @plugins.smartdata.svDb()
-  public from: string;
+  public from!: string;
 
   /**
    * Recipient email addresses
    */
   @plugins.smartdata.svDb()
-  public to: string[];
+  public to!: string[];
 
   /**
    * CC recipients
    */
   @plugins.smartdata.svDb()
-  public cc: string[];
+  public cc!: string[];
 
   /**
    * BCC recipients
    */
   @plugins.smartdata.svDb()
-  public bcc: string[];
+  public bcc!: string[];
 
   /**
    * Email subject
    */
   @plugins.smartdata.svDb()
-  public subject: string;
+  public subject!: string;
 
   /**
    * Raw RFC822 email content
    */
   @plugins.smartdata.svDb()
-  public rawContent: string;
+  public rawContent!: string;
 
   /**
    * Current status of the email
    */
   @plugins.smartdata.svDb()
-  public status: TCachedEmailStatus;
+  public status!: TCachedEmailStatus;
 
   /**
    * Number of delivery attempts
@@ -101,25 +101,25 @@ export class CachedEmail extends CachedDocument<CachedEmail> {
    * Timestamp for next delivery attempt
    */
   @plugins.smartdata.svDb()
-  public nextAttempt: Date;
+  public nextAttempt!: Date;
 
   /**
    * Last error message if delivery failed
    */
   @plugins.smartdata.svDb()
-  public lastError: string;
+  public lastError!: string;
 
   /**
    * Timestamp when the email was successfully delivered
    */
   @plugins.smartdata.svDb()
-  public deliveredAt: Date;
+  public deliveredAt!: Date;
 
   /**
    * Sender domain (for querying/filtering)
    */
   @plugins.smartdata.svDb()
-  public senderDomain: string;
+  public senderDomain!: string;
 
   /**
    * Priority level (higher = more important)
@@ -131,7 +131,7 @@ export class CachedEmail extends CachedDocument<CachedEmail> {
    * JSON-serialized route data
    */
   @plugins.smartdata.svDb()
-  public routeData: string;
+  public routeData!: string;
 
   /**
    * DKIM signature status

ts/cache/documents/classes.cached.ip.reputation.ts

@@ -45,61 +45,61 @@ export class CachedIPReputation extends CachedDocument<CachedIPReputation> {
    */
   @plugins.smartdata.unI()
   @plugins.smartdata.svDb()
-  public ipAddress: string;
+  public ipAddress!: string;
 
   /**
    * Reputation score (0-100, higher = better)
    */
   @plugins.smartdata.svDb()
-  public score: number;
+  public score!: number;
 
   /**
    * Whether the IP is flagged as spam source
    */
   @plugins.smartdata.svDb()
-  public isSpam: boolean;
+  public isSpam!: boolean;
 
   /**
    * Whether the IP is a known proxy
    */
   @plugins.smartdata.svDb()
-  public isProxy: boolean;
+  public isProxy!: boolean;
 
   /**
    * Whether the IP is a Tor exit node
    */
   @plugins.smartdata.svDb()
-  public isTor: boolean;
+  public isTor!: boolean;
 
   /**
    * Whether the IP is a VPN endpoint
    */
   @plugins.smartdata.svDb()
-  public isVPN: boolean;
+  public isVPN!: boolean;
 
   /**
    * Country code (ISO 3166-1 alpha-2)
    */
   @plugins.smartdata.svDb()
-  public country: string;
+  public country!: string;
 
   /**
    * Autonomous System Number
    */
   @plugins.smartdata.svDb()
-  public asn: string;
+  public asn!: string;
 
   /**
    * Organization name
    */
   @plugins.smartdata.svDb()
-  public org: string;
+  public org!: string;
 
   /**
    * List of blacklists the IP appears on
    */
   @plugins.smartdata.svDb()
-  public blacklists: string[];
+  public blacklists!: string[];
 
   /**
    * Number of times this IP has been checked