Protect private bank configuration from drift reconciliation (Refs #152)

src/lib/server/provisioning/activation-files.ts

@@ -1,3 +1,4 @@
+import { assertPublicFileTarget } from '../fleet/private-config.js';
 import { db } from '../db/index.js';
 import { blobSize, getFileBlob } from '../db/file-blobs.js';
 import type { LaunchRecipePlan } from '../fleet/launch-recipes.js';
@@ -22,6 +23,7 @@ export function applyActivationFiles(
         version: number | null;
     })[];
     for (const change of changes) {
+        assertPublicFileTarget(change.server, change.kind, change.rel_path);
         if (change.kind !== 'script' && change.kind !== 'config' && change.kind !== 'plugin')
             throw new Error('File activation requires a runtime file kind.');
         recipe.files = recipe.files.filter(

src/lib/server/provisioning/native.ts

@@ -1,3 +1,4 @@
+import { assertPublicFileTarget, isPrivateConfigPath } from '../fleet/private-config.js';
 import { assertScalingOwnership } from '../autoscaling/ownership.js';
 import { removalAuthorization } from '../autoscaling/authorization.js';
 import { scalingIntent } from '../autoscaling/admission.js';
@@ -509,6 +510,7 @@ function filesFor(job: Job): FilePlan[] {
             'id' | 'kind' | 'rel_path' | 'check_before' | 'expected_before_sha'
         > & { content_hash: string | null }
     >;
+    for (const row of rows) assertPublicFileTarget(job.server, row.kind, row.rel_path);
     return rows.map((row) => ({
         id: row.id,
         path: posix.join(
@@ -532,7 +534,12 @@ function storedFiles(job: Job): FilePlan[] {
     const row = db()
         .prepare('SELECT files_json FROM native_provisioning WHERE deployment_id=?')
         .get(job.id) as { files_json: string | null } | undefined;
-    return (JSON.parse(row?.files_json ?? '[]') as FilePlan[]).map(fileMetadata);
+    const files = (JSON.parse(row?.files_json ?? '[]') as FilePlan[]).map(fileMetadata);
+    if (files.some((file) => isPrivateConfigPath(file.path)))
+        throw new Error(
+            'Private bank configuration cannot be captured or changed by a file campaign.'
+        );
+    return files;
 }
 
 /** Agent receipts are the authoritative before images; do not read a controller mount. */