Fix native provisioning scheduling and progress reporting

tests/unit/drift-kinds.test.ts

@@ -44,6 +44,37 @@ afterEach(async () => {
 });
 
 describe('reviewed drift plans', () => {
+    it('reads files in bounded batches and preserves deterministic scan order', async () => {
+        const { seedServerRegistry } = await import('../../src/lib/server/fleet/servers.js');
+        await seedServerRegistry();
+        const { destOfKind } = await import('../../src/lib/server/config.js');
+        const destination = destOfKind('t5_zombie_theater_1', 'plugin');
+        const names = Array.from({ length: 12 }, (_, i) => `batch-${String(i).padStart(2, '0')}.dll`);
+        await Promise.all(names.map(name => writeFile(join(destination, name), name)));
+        const files = await import('../../src/lib/server/backends/files.js');
+        const original = files.readFile;
+        let release!: () => void;
+        const gate = new Promise<void>(resolve => { release = resolve; });
+        let active = 0; let peak = 0;
+        const read = vi.spyOn(files, 'readFile').mockImplementation(async path => {
+            if (!path.includes('batch-')) return original(path);
+            peak = Math.max(peak, ++active);
+            try { await gate; return await original(path); }
+            finally { active--; }
+        });
+        const { scanServerDrift } = await import('../../src/lib/server/fleet/drift.js');
+        const scan = scanServerDrift('t5_zombie_theater_1');
+        try {
+            await vi.waitFor(() => expect(active).toBe(4));
+            expect(read.mock.calls.filter(([path]) => path.includes('batch-'))).toHaveLength(4);
+            release();
+            const result = await scan;
+            expect(result.filter(entry => entry.relPath.startsWith('batch-')).map(entry => entry.relPath)).toEqual(names);
+            expect(peak).toBe(4);
+            expect(active).toBe(0);
+        } finally { release(); await scan; read.mockRestore(); }
+    });
+
     it('keeps live deletions, replacements, and inventory unchanged until activation', async () => {
         const { seedServerRegistry } = await import('../../src/lib/server/fleet/servers.js');
         const { createScript } = await import('../../src/lib/server/fleet/scripts.js');