fix(build): tighten TypeScript compiler settings and harden error message handling

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartvm',
-  version: '1.1.0',
+  version: '1.1.1',
   description: 'A TypeScript module wrapping Amazon Firecracker VMM for managing lightweight microVMs'
 }

ts/classes.microvm.ts

@@ -155,8 +155,9 @@ export class MicroVM {
       if (err instanceof SmartVMError) {
         throw err;
       }
+      const message = err instanceof Error ? err.message : String(err);
       throw new SmartVMError(
-        `Failed to start VM ${this.id}: ${err.message}`,
+        `Failed to start VM ${this.id}: ${message}`,
         'START_FAILED',
       );
     }

ts/classes.networkmanager.ts

@@ -133,8 +133,9 @@ export class NetworkManager {
 
       this.bridgeCreated = true;
     } catch (err) {
+      const message = err instanceof Error ? err.message : String(err);
       throw new SmartVMError(
-        `Failed to set up network bridge: ${err.message}`,
+        `Failed to set up network bridge: ${message}`,
         'BRIDGE_SETUP_FAILED',
       );
     }
@@ -169,8 +170,9 @@ export class NetworkManager {
       this.activeTaps.set(tapName, tap);
       return tap;
     } catch (err) {
+      const message = err instanceof Error ? err.message : String(err);
       throw new SmartVMError(
-        `Failed to create TAP device ${tapName}: ${err.message}`,
+        `Failed to create TAP device ${tapName}: ${message}`,
         'TAP_CREATE_FAILED',
       );
     }