fix: resume vacuum trails after short stops

Issue: #205
User-Visible: yes

scripts/mutation-gate.mjs

@@ -488,6 +488,17 @@ export const MUTANTS = [
         + "        show_names: d.source === 'draw' && d.mode === 'create' ? true : d.showNames,",
     }],
   },
+  {
+    id: 'vacuum-trail-resume-disabled',
+    guard: 'node scripts/trail-resume-test-guard.mjs',
+    because: 'an ended same-map run inside the accepted 30-minute window must reopen instead '
+      + 'of rotating into previous; focused pure and recorder sequences must reject the old unconditional split',
+    patches: [{
+      file: 'custom_components/houseplan/trails.py',
+      find: '        resumed = bool(cur and can_resume_trail_run(cur, map_id, now))',
+      replace: '        resumed = False',
+    }],
+  },
 ];
 
 // --- механика ---------------------------------------------------------------

scripts/trail-resume-test-guard.mjs

@@ -0,0 +1,22 @@
+#!/usr/bin/env node
+import { spawnSync } from 'node:child_process';
+import { existsSync } from 'node:fs';
+import { join } from 'node:path';
+
+const localPython = process.platform === 'win32'
+  ? join(process.cwd(), '.venv', 'Scripts', 'python.exe')
+  : join(process.cwd(), '.venv', 'bin', 'python');
+const python = process.env.PYTHON
+  || (existsSync(localPython) ? localPython : (process.platform === 'win32' ? 'python' : 'python3'));
+const result = spawnSync(python, [
+  '-m', 'pytest',
+  'tests_backend/test_trails.py',
+  'tests_backend/test_trail_recorder.py',
+  '-q', '-k', 'resume or short_available',
+], { stdio: 'inherit' });
+
+if (result.error) {
+  console.error(`trail resume guard could not start ${python}: ${result.error.message}`);
+  process.exit(2);
+}
+process.exit(result.status ?? 2);