feat: Enhance session processing and metrics

- Updated session processing commands in documentation for clarity.
- Removed transcript content fetching from session processing, allowing on-demand retrieval.
- Improved session metrics calculations and added new metrics for dashboard.
- Refactored processing scheduler to handle sessions in parallel with concurrency limits.
- Added manual trigger API for processing unprocessed sessions with admin checks.
- Implemented scripts for fetching and parsing transcripts, checking transcript content, and testing processing status.
- Updated Prisma schema to enforce default values for processed sessions.
- Added error handling and logging improvements throughout the processing workflow.

scripts/manual-trigger-test.js

@@ -0,0 +1,38 @@
+// Simple script to test the manual processing trigger
+// Usage: node scripts/manual-trigger-test.js
+
+import fetch from 'node-fetch';
+
+async function testManualTrigger() {
+  try {
+    console.log('Testing manual processing trigger...');
+
+    const response = await fetch('http://localhost:3000/api/admin/trigger-processing', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        // Note: In a real scenario, you'd need to include authentication cookies
+        // For testing, you might need to login first and copy the session cookie
+      },
+      body: JSON.stringify({
+        batchSize: 5,  // Process max 5 sessions
+        maxConcurrency: 3  // Use 3 concurrent workers
+      })
+    });
+
+    const result = await response.json();
+
+    if (response.ok) {
+      console.log('✅ Manual trigger successful:');
+      console.log(JSON.stringify(result, null, 2));
+    } else {
+      console.log('❌ Manual trigger failed:');
+      console.log(JSON.stringify(result, null, 2));
+    }
+
+  } catch (error) {
+    console.error('❌ Error testing manual trigger:', error.message);
+  }
+}
+
+testManualTrigger();