diff --git a/bin/install.js b/bin/install.js
index 2de04b471..2a5237016 100755
--- a/bin/install.js
+++ b/bin/install.js
@@ -4565,6 +4565,15 @@ function uninstall(isGlobal, runtime = 'claude') {
     }
   }
 
+  // Remove the file manifest that the installer wrote at install time.
+  // Without this step the metadata file persists after uninstall (#1908).
+  const manifestPath = path.join(targetDir, MANIFEST_NAME);
+  if (fs.existsSync(manifestPath)) {
+    fs.rmSync(manifestPath, { force: true });
+    removedCount++;
+    console.log(`  ${green}✓${reset} Removed ${MANIFEST_NAME}`);
+  }
+
   if (removedCount === 0) {
     console.log(`  ${yellow}⚠${reset} No GSD files found to remove.`);
   }
diff --git a/tests/bug-1908-uninstall-manifest.test.cjs b/tests/bug-1908-uninstall-manifest.test.cjs
new file mode 100644
index 000000000..85a144546
--- /dev/null
+++ b/tests/bug-1908-uninstall-manifest.test.cjs
@@ -0,0 +1,133 @@
+/**
+ * Regression test for bug #1908
+ *
+ * `--uninstall` did not remove `gsd-file-manifest.json` from the target
+ * directory, leaving a stale metadata file after uninstall.
+ *
+ * Fix: `uninstall()` must call
+ *   fs.rmSync(path.join(targetDir, MANIFEST_NAME), { force: true })
+ * after cleaning up the rest of the GSD artefacts.
+ */
+
+'use strict';
+
+process.env.GSD_TEST_MODE = '1';
+
+const { describe, test, beforeEach, afterEach } = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('fs');
+const path = require('path');
+const os = require('os');
+
+const { uninstall } = require('../bin/install.js');
+
+const MANIFEST_NAME = 'gsd-file-manifest.json';
+
+// ─── helpers ──────────────────────────────────────────────────────────────────
+
+function createFakeInstall(prefix = 'gsd-uninstall-test-') {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), prefix));
+
+  // Simulate the minimum directory/file layout produced by the installer:
+  // get-shit-done/ directory, agents/ directory, and the manifest file.
+  fs.mkdirSync(path.join(dir, 'get-shit-done', 'workflows'), { recursive: true });
+  fs.writeFileSync(path.join(dir, 'get-shit-done', 'workflows', 'execute-phase.md'), '# stub');
+
+  fs.mkdirSync(path.join(dir, 'agents'), { recursive: true });
+  fs.writeFileSync(path.join(dir, 'agents', 'gsd-executor.md'), '# stub');
+
+  const manifest = {
+    version: '1.34.0',
+    timestamp: new Date().toISOString(),
+    files: {
+      'get-shit-done/workflows/execute-phase.md': 'abc123',
+      'agents/gsd-executor.md': 'def456',
+    },
+  };
+  fs.writeFileSync(path.join(dir, MANIFEST_NAME), JSON.stringify(manifest, null, 2));
+
+  return dir;
+}
+
+function cleanup(dir) {
+  try { fs.rmSync(dir, { recursive: true, force: true }); } catch {}
+}
+
+// ─── tests ────────────────────────────────────────────────────────────────────
+
+describe('uninstall — manifest cleanup (#1908)', () => {
+  let tmpDir;
+
+  beforeEach(() => {
+    tmpDir = createFakeInstall();
+  });
+
+  afterEach(() => {
+    cleanup(tmpDir);
+  });
+
+  test('gsd-file-manifest.json is removed after global uninstall', () => {
+    const manifestPath = path.join(tmpDir, MANIFEST_NAME);
+
+    // Pre-condition: manifest exists before uninstall
+    assert.ok(
+      fs.existsSync(manifestPath),
+      'Test setup failure: manifest file should exist before uninstall'
+    );
+
+    // Run uninstall against tmpDir (pass it via CLAUDE_CONFIG_DIR so getGlobalDir()
+    // resolves to our temp directory; pass isGlobal=true)
+    const savedEnv = process.env.CLAUDE_CONFIG_DIR;
+    process.env.CLAUDE_CONFIG_DIR = tmpDir;
+    try {
+      uninstall(true, 'claude');
+    } finally {
+      if (savedEnv === undefined) {
+        delete process.env.CLAUDE_CONFIG_DIR;
+      } else {
+        process.env.CLAUDE_CONFIG_DIR = savedEnv;
+      }
+    }
+
+    assert.ok(
+      !fs.existsSync(manifestPath),
+      [
+        `${MANIFEST_NAME} must be removed by uninstall() but still exists at`,
+        manifestPath,
+      ].join(' ')
+    );
+  });
+
+  test('gsd-file-manifest.json is removed after local uninstall', () => {
+    const manifestPath = path.join(tmpDir, MANIFEST_NAME);
+
+    assert.ok(
+      fs.existsSync(manifestPath),
+      'Test setup failure: manifest file should exist before uninstall'
+    );
+
+    // For a local install, getGlobalDir is not called — targetDir = cwd + dirName.
+    // Simulate by creating .claude/ inside tmpDir and placing artefacts there.
+    const localDir = path.join(tmpDir, '.claude');
+    fs.mkdirSync(path.join(localDir, 'get-shit-done', 'workflows'), { recursive: true });
+    fs.writeFileSync(path.join(localDir, 'get-shit-done', 'workflows', 'execute-phase.md'), '# stub');
+    const localManifestPath = path.join(localDir, MANIFEST_NAME);
+    fs.writeFileSync(localManifestPath, JSON.stringify({ version: '1.34.0', files: {} }, null, 2));
+
+    const savedCwd = process.cwd();
+    process.chdir(tmpDir);
+    try {
+      uninstall(false, 'claude');
+    } finally {
+      process.chdir(savedCwd);
+    }
+
+    assert.ok(
+      !fs.existsSync(localManifestPath),
+      [
+        `${MANIFEST_NAME} must be removed by uninstall() (local) but still exists at`,
+        localManifestPath,
+      ].join(' ')
+    );
+  });
+});