Add flexible Jira ticket creation — CVE/Vendor optional, source context tracking

Make CVE ID and Vendor optional when creating Jira tickets. Add source_context
field to track ticket origin (cve, archer, ivanti_queue, email, manual).

- Migration: drop NOT NULL on cve_id/vendor, add source_context column with CHECK
- Backend: update create/update/get endpoints for optional fields and source_context
- Frontend: update creation modal with optional labels and source context dropdown
- Add Create Jira Ticket action from Ivanti queue (pre-populates from finding)
- Add Create Jira Ticket action from Archer detail view (pre-populates from ticket)
- Add source context badge column, filter dropdown, and search to ticket list

backend/migrations/add_flexible_jira_ticket_creation.js

@@ -0,0 +1,73 @@
+// Migration: Add flexible Jira ticket creation support
+// - Drops NOT NULL on cve_id and vendor columns
+// - Adds source_context column with CHECK constraint
+// - Backfills existing rows with source_context = 'manual'
+// - Adds index on source_context
+// Idempotent — safe to run multiple times.
+const pool = require('../db');
+
+async function run() {
+    console.log('Starting flexible Jira ticket creation migration...');
+
+    // Verify jira_tickets table exists before proceeding
+    const { rows } = await pool.query(`
+        SELECT 1 FROM information_schema.tables
+        WHERE table_schema = 'public' AND table_name = 'jira_tickets'
+    `);
+    if (rows.length === 0) {
+        console.error('✗ jira_tickets table does not exist. Cannot proceed.');
+        process.exit(1);
+    }
+    console.log('✓ jira_tickets table exists');
+
+    // Drop NOT NULL constraint on cve_id (idempotent — no-op if already nullable)
+    await pool.query(`ALTER TABLE jira_tickets ALTER COLUMN cve_id DROP NOT NULL`);
+    console.log('✓ cve_id NOT NULL constraint dropped (or was already nullable)');
+
+    // Drop NOT NULL constraint on vendor (idempotent — no-op if already nullable)
+    await pool.query(`ALTER TABLE jira_tickets ALTER COLUMN vendor DROP NOT NULL`);
+    console.log('✓ vendor NOT NULL constraint dropped (or was already nullable)');
+
+    // Add source_context column with default value (IF NOT EXISTS makes it idempotent)
+    await pool.query(`
+        ALTER TABLE jira_tickets
+        ADD COLUMN IF NOT EXISTS source_context TEXT DEFAULT 'manual'
+    `);
+    console.log('✓ source_context column added (or already exists)');
+
+    // Add CHECK constraint for allowed source_context values (idempotent guard)
+    await pool.query(`
+        DO $$
+        BEGIN
+            IF NOT EXISTS (
+                SELECT 1 FROM pg_constraint WHERE conname = 'jira_tickets_source_context_check'
+            ) THEN
+                ALTER TABLE jira_tickets
+                ADD CONSTRAINT jira_tickets_source_context_check
+                CHECK (source_context IN ('cve', 'archer', 'ivanti_queue', 'email', 'manual'));
+            END IF;
+        END $$;
+    `);
+    console.log('✓ source_context CHECK constraint added (or already exists)');
+
+    // Backfill existing rows where source_context is NULL
+    const result = await pool.query(`
+        UPDATE jira_tickets SET source_context = 'manual' WHERE source_context IS NULL
+    `);
+    console.log(`✓ Backfilled ${result.rowCount} rows with source_context = 'manual'`);
+
+    // Add index on source_context for filtering performance
+    await pool.query(`
+        CREATE INDEX IF NOT EXISTS idx_jira_tickets_source_context
+        ON jira_tickets(source_context)
+    `);
+    console.log('✓ source_context index created (or already exists)');
+
+    console.log('Migration complete.');
+    process.exit(0);
+}
+
+run().catch(err => {
+    console.error('Migration failed:', err.message);
+    process.exit(1);
+});