Add configurable history and storage retention policies

src/routes/api/campaigns/[id]/+server.ts

@@ -41,5 +41,6 @@ export async function GET({ params }: { params: { id: string } }) {
 
     const events = db().prepare('SELECT id, created_at, message FROM campaign_events WHERE deployment_id = ? ORDER BY id').all(params.id);
     const watchdog = db().prepare('SELECT incident_id FROM watchdog_actions WHERE campaign_id = ? LIMIT 1').get(params.id) as { incident_id: string } | undefined;
-    return json({ deployment: dep, servers, files, scripts, events, watchdogIncidentId: watchdog?.incident_id ?? null });
+    const fileContentsExpired = !!db().prepare("SELECT 1 FROM retention_expirations WHERE category='file-content' AND record_id=?").get(params.id);
+    return json({ fileContentsExpired, deployment: dep, servers, files, scripts, events, watchdogIncidentId: watchdog?.incident_id ?? null });
 }

src/routes/api/campaigns/[id]/file/[fileId]/+server.ts

@@ -5,6 +5,9 @@ import { db } from '$lib/server/db/index.js';
 // so the DiffViewer can render a unified diff without a second query.
 
 export async function GET({ params }: { params: { id: string; fileId: string } }) {
+    if (db().prepare("SELECT 1 FROM retention_expirations WHERE category='file-content' AND record_id=?").get(params.id)) {
+        return json({ error: 'File contents expired under the retention policy.' }, { status: 410 });
+    }
     const row = db()
         .prepare(
             `SELECT verb, rel_path, sha256_before, sha256_after, content_before, content_after