Add Ivanti Workflows panel with API key auth and SQLite cache

- New panel below Archer tickets showing workflow count and list
- Backend proxies platform4.risksense.com workflowBatch/search via x-api-key
- SQLite cache table (ivanti_sync_state) stores latest sync result
- Auto-syncs on server startup if >24h stale, then every 24h via setInterval
- POST /api/ivanti/workflows/sync for on-demand sync with spinner feedback
- GET /api/ivanti/workflows returns cached data instantly (no live API call)
- Displays id.value, name, currentState, type, createdOn per workflow
- Shows last-synced timestamp and error messages inline
- IVANTI_SKIP_TLS flag for Charter SSL proxy environments

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

backend/migrations/add_ivanti_sync_table.js

@@ -0,0 +1,37 @@
+// Migration: Add ivanti_sync_state table
+const sqlite3 = require('sqlite3').verbose();
+const path = require('path');
+
+const dbPath = path.join(__dirname, '..', 'cve_database.db');
+const db = new sqlite3.Database(dbPath);
+
+console.log('Starting Ivanti sync state migration...');
+
+db.serialize(() => {
+    db.run(`
+        CREATE TABLE IF NOT EXISTS ivanti_sync_state (
+            id INTEGER PRIMARY KEY CHECK (id = 1),
+            total INTEGER DEFAULT 0,
+            workflows_json TEXT DEFAULT '[]',
+            synced_at DATETIME,
+            sync_status TEXT DEFAULT 'never',
+            error_message TEXT
+        )
+    `, (err) => {
+        if (err) console.error('Error creating table:', err);
+        else console.log('✓ ivanti_sync_state table created');
+    });
+
+    // Seed the single-row state record
+    db.run(`
+        INSERT OR IGNORE INTO ivanti_sync_state (id, total, workflows_json, sync_status)
+        VALUES (1, 0, '[]', 'never')
+    `, (err) => {
+        if (err) console.error('Error seeding state row:', err);
+        else console.log('✓ ivanti_sync_state row seeded');
+    });
+});
+
+db.close(() => {
+    console.log('Migration complete!');
+});