fix(build): modernize project tooling and package metadata

ts/classes.clamav.manager.ts

@@ -110,8 +110,11 @@ export class ClamAVManager extends EventEmitter {
       }
     } catch (error) {
       // Check if the error is due to freshclam already running
-      if (error.stderr?.includes('ERROR: Problem with internal logger') || 
-          error.stdout?.includes('Resource temporarily unavailable')) {
+      const execError = error as { stderr?: string; stdout?: string };
+      if (
+        execError.stderr?.includes('ERROR: Problem with internal logger') ||
+        execError.stdout?.includes('Resource temporarily unavailable')
+      ) {
         console.log('Freshclam is already running, skipping manual update');
         return;
       }
@@ -153,7 +156,7 @@ export class ClamAVManager extends EventEmitter {
 
     logProcess.stdout.on('data', (data) => {
       const lines = data.toString().split('\n');
-      lines.forEach(line => {
+      lines.forEach((line: string) => {
         if (!line.trim()) return;
 
         const event: ClamAVLogEvent = {
@@ -255,7 +258,8 @@ export class ClamAVManager extends EventEmitter {
           // Service not ready yet, will retry
           if (checkCount >= maxChecks) {
             cleanup();
-            reject(new Error(`ClamAV initialization timed out after ${maxChecks} seconds. Last error: ${error.message}`));
+            const errorMessage = error instanceof Error ? error.message : String(error);
+            reject(new Error(`ClamAV initialization timed out after ${maxChecks} seconds. Last error: ${errorMessage}`));
             return;
           }
           checkCount++;