diff --git a/plugins/ai-psychosis/tests/privacy.test.mjs b/plugins/ai-psychosis/tests/privacy.test.mjs
index d7a6340..240dae5 100644
--- a/plugins/ai-psychosis/tests/privacy.test.mjs
+++ b/plugins/ai-psychosis/tests/privacy.test.mjs
@@ -41,4 +41,26 @@ describe('privacy', () => {
     const allContent = readAllFiles(dir);
     assert.ok(!allContent.includes(canary), `Canary "${canary}" found in data files — privacy violation`);
   });
+
+  it('never leaks matched-pattern phrases through full lifecycle', () => {
+    dir = setupTestDir();
+    const matchedPhrase = 'are you sure';
+    const canary = 'CANARY_PRIVACY_xyz123';
+    const prompt = `${matchedPhrase}? ${canary}`;
+
+    runHook('session-start.mjs', { session_id: 'priv2', cwd: '/tmp' }, dir);
+    runHook('prompt-analyzer.mjs', { session_id: 'priv2', prompt }, dir);
+    runHook('tool-tracker.mjs', { session_id: 'priv2', tool_name: 'Edit' }, dir);
+    runHook('session-end.mjs', { session_id: 'priv2', cwd: '/tmp' }, dir);
+
+    const allContent = readAllFiles(dir);
+    assert.ok(
+      !allContent.includes(canary),
+      `Canary "${canary}" leaked — pattern-match did not protect prompt text`
+    );
+    assert.ok(
+      !allContent.toLowerCase().includes(matchedPhrase),
+      `Matched phrase "${matchedPhrase}" leaked — pattern name or trigger phrase written to disk`
+    );
+  });
 });