fix(typecheck): resolve TypeScript errors introduced by lint fixes

- ExecutionMonitor: fix null checks, align metrics with ExecutionMetrics type
- error-reporting: handle undefined match groups and status message lookups
- multi-tenant-context.examples: use executionId instead of id, fix type casts
- multi-tenant-context: add type assertion for request data
- workflow-error-handler: spread ErrorContext to satisfy Record<string, unknown>

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontends/nextjs/src/components/workflow/ExecutionMonitor.tsx

@@ -109,7 +109,7 @@ export const ExecutionMonitor: React.FC<ExecutionMonitorProps> = ({
           </button>
         </div>
 
-        {listError !== undefined && (
+        {listError != null && (
           <div className={styles.error}>
             <p>Error loading executions: {listError.message}</p>
           </div>
@@ -125,7 +125,7 @@ export const ExecutionMonitor: React.FC<ExecutionMonitorProps> = ({
             />
           ))}
 
-          {executions.length === 0 && listError === undefined && (
+          {executions.length === 0 && listError == null && (
             <p className={styles.noResults}>No executions yet</p>
           )}
         </div>
@@ -380,8 +380,9 @@ const MetricsGrid: React.FC<MetricsGridProps> = ({ metrics }) => {
       <MetricCard label="Retried" value={metrics.retriedNodes} />
       <MetricCard label="Total Retries" value={metrics.totalRetries} />
       <MetricCard label="Peak Memory" value={`${metrics.peakMemory} MB`} />
-      <MetricCard label="Data Processed" value={`${metrics.dataProcessed} KB`} />
-      <MetricCard label="API Calls" value={metrics.apiCallsMade} />
+      <MetricCard label="Validation Failures" value={metrics.validationFailures} />
+      <MetricCard label="Recovery Attempts" value={metrics.recoveryAttempts} />
+      <MetricCard label="Recovery Successes" value={metrics.recoverySuccesses} />
     </div>
   )
 }

frontends/nextjs/src/lib/error-reporting.ts

@@ -200,7 +200,7 @@ class ErrorReportingService {
   private extractStatusCode(error: Error | string): number | undefined {
     const message = typeof error === 'string' ? error : error.message
     const match = message.match(/(\d{3})/)
-    return match != null ? parseInt(match[1], 10) : undefined
+    return match?.[1] != null ? parseInt(match[1], 10) : undefined
   }
 
   /**
@@ -254,7 +254,7 @@ class ErrorReportingService {
       504: 'Gateway timeout. Please try again later.',
     }
 
-    return messages[statusCode]
+    return messages[statusCode] ?? 'An unexpected error occurred.'
   }
 
   /**

frontends/nextjs/src/lib/workflow/multi-tenant-context.examples.ts

@@ -134,7 +134,7 @@ export async function manualWorkflowExecution(req: NextRequest) {
         timestamp: Date.now(),
       },
       variables,
-      secrets,
+      secrets: secrets as Record<string, string> | undefined,
     })
 
     console.warn(`[${executionId}] Context built for user ${user.id}`)
@@ -150,9 +150,8 @@ export async function manualWorkflowExecution(req: NextRequest) {
     // 6. Return result
     return NextResponse.json({
       success: true,
-      executionId: record.id,
+      executionId: record.executionId,
       status: record.status,
-      duration: record.duration,
     })
   } catch (error) {
     console.error(`[${executionId}] Execution failed:`, error)
@@ -367,12 +366,11 @@ export async function executeScheduledWorkflow(
     // 4. Log to database
     const executionLogOps = db.entity('ExecutionLog')
     await executionLogOps.create({
-      executionId: record.id,
+      executionId: record.executionId,
       tenantId,
       workflowId: workflow.id,
       triggeredBy: 'schedule',
       status: record.status,
-      duration: record.duration,
       createdAt: new Date(),
     })
 
@@ -530,7 +528,7 @@ export async function adminExecuteWorkflow(req: NextRequest) {
 
     return NextResponse.json({
       success: true,
-      executionId: record.id,
+      executionId: record.executionId,
       status: record.status,
       note: 'Cross-tenant execution by super-admin',
     })
@@ -561,8 +559,8 @@ export async function logExecutionContext(context: ExtendedWorkflowContext) {
     workflow: sanitized.workflowId,
     tenant: sanitized.tenantId,
     user: sanitized.userId,
-    mode: sanitized.multiTenant.executionMode,
-    timestamp: sanitized.multiTenant.requestedAt,
+    mode: (sanitized.multiTenant as Record<string, unknown>)?.executionMode,
+    timestamp: (sanitized.multiTenant as Record<string, unknown>)?.requestedAt,
     // Variables listed as keys only, no values
     variables: sanitized.variables,
     // Limits included for monitoring

frontends/nextjs/src/lib/workflow/multi-tenant-context.ts

@@ -189,7 +189,7 @@ export class MultiTenantContextBuilder {
       triggerData: requestData?.triggerData ?? {},
       variables: this.buildVariables(requestData?.variables),
       secrets: requestData?.secrets ?? {},
-      request: this.options.captureRequestData ? requestData?.request : undefined,
+      request: this.options.captureRequestData ? requestData?.request as WorkflowContext['request'] : undefined,
       multiTenant: multiTenantMeta,
       requestMetadata: {
         ipAddress: this.requestContext.ipAddress,

frontends/nextjs/src/lib/workflow/workflow-error-handler.ts

@@ -484,7 +484,7 @@ export class WorkflowErrorHandler {
         code: WorkflowErrorCode.NOT_FOUND,
         message: `${resource} not found`,
         statusCode: 404,
-        details: context,
+        details: { ...context },
       },
       diagnostics: {
         hint: ERROR_HINTS[WorkflowErrorCode.NOT_FOUND],