fix: restore snapshot-routing contract test, remove orphaned comment

snapshot-routing.test.ts validates that every command in the snapshot
catalog has a handler — a structural check invisible to Istanbul.
Same false-positive pattern as package-exports.test.ts.

Author: thymikee

src/daemon/handlers/__tests__/snapshot-routing.test.ts

@@ -0,0 +1,9 @@
+import { test, expect } from 'vitest';
+import { DAEMON_COMMAND_GROUPS } from '../../../command-catalog.ts';
+import { SNAPSHOT_COMMAND_HANDLERS } from '../snapshot.ts';
+
+test('snapshot command catalog has handler coverage', () => {
+  for (const command of DAEMON_COMMAND_GROUPS.snapshot) {
+    expect(SNAPSHOT_COMMAND_HANDLERS).toHaveProperty(command);
+  }
+});

src/daemon/handlers/__tests__/snapshot.test.ts

@@ -2,10 +2,6 @@ import { test } from 'vitest';
 import assert from 'node:assert/strict';
 import { parseWaitPositionals as parseWaitArgs } from '../../../command-codecs/wait.ts';
 
-// --- parseTimeout ---
-
-// --- parseWaitArgs ---
-
 test('parseWaitArgs returns null for empty args', () => {
   assert.equal(parseWaitArgs([]), null);
 });