feat: add npx CLI entry point with install, runtime, and IDE detection commands

Replaces the old git-clone installer with a direct npm package copy workflow.
Supports 13 IDE auto-detection targets, runtime delegation to Bun worker,
and pure Node.js install path (no Bun required for installation).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/npx-cli/commands/uninstall.ts

@@ -0,0 +1,171 @@
+/**
+ * Uninstall command for `npx claude-mem uninstall`.
+ *
+ * Removes the plugin from the marketplace directory, cache, plugin
+ * registrations, and Claude settings. Optionally cleans up IDE-specific
+ * configurations.
+ *
+ * Pure Node.js — no Bun APIs used.
+ */
+import * as p from '@clack/prompts';
+import pc from 'picocolors';
+import { existsSync, rmSync } from 'fs';
+import { join } from 'path';
+import {
+  claudeSettingsPath,
+  installedPluginsPath,
+  isPluginInstalled,
+  knownMarketplacesPath,
+  marketplaceDirectory,
+  pluginsDirectory,
+  readJsonFileSafe,
+  writeJsonFileAtomic,
+} from '../utils/paths.js';
+
+// ---------------------------------------------------------------------------
+// Cleanup helpers
+// ---------------------------------------------------------------------------
+
+function removeMarketplaceDirectory(): boolean {
+  const marketplaceDir = marketplaceDirectory();
+  if (existsSync(marketplaceDir)) {
+    rmSync(marketplaceDir, { recursive: true, force: true });
+    return true;
+  }
+  return false;
+}
+
+function removeCacheDirectory(): boolean {
+  const cacheBaseDirectory = join(pluginsDirectory(), 'cache', 'thedotmack');
+  if (existsSync(cacheBaseDirectory)) {
+    rmSync(cacheBaseDirectory, { recursive: true, force: true });
+    return true;
+  }
+  return false;
+}
+
+function removeFromKnownMarketplaces(): void {
+  const knownMarketplaces = readJsonFileSafe(knownMarketplacesPath());
+  if (knownMarketplaces['thedotmack']) {
+    delete knownMarketplaces['thedotmack'];
+    writeJsonFileAtomic(knownMarketplacesPath(), knownMarketplaces);
+  }
+}
+
+function removeFromInstalledPlugins(): void {
+  const installedPlugins = readJsonFileSafe(installedPluginsPath());
+  if (installedPlugins.plugins?.['claude-mem@thedotmack']) {
+    delete installedPlugins.plugins['claude-mem@thedotmack'];
+    writeJsonFileAtomic(installedPluginsPath(), installedPlugins);
+  }
+}
+
+function removeFromClaudeSettings(): void {
+  const settings = readJsonFileSafe(claudeSettingsPath());
+  if (settings.enabledPlugins?.['claude-mem@thedotmack'] !== undefined) {
+    delete settings.enabledPlugins['claude-mem@thedotmack'];
+    writeJsonFileAtomic(claudeSettingsPath(), settings);
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Public API
+// ---------------------------------------------------------------------------
+
+export async function runUninstallCommand(): Promise<void> {
+  p.intro(pc.bgRed(pc.white(' claude-mem uninstall ')));
+
+  if (!isPluginInstalled()) {
+    p.log.warn('claude-mem does not appear to be installed.');
+
+    // Still offer to clean up partial state
+    if (process.stdin.isTTY) {
+      const shouldCleanup = await p.confirm({
+        message: 'Clean up any remaining registration data anyway?',
+        initialValue: false,
+      });
+
+      if (p.isCancel(shouldCleanup) || !shouldCleanup) {
+        p.outro('Nothing to do.');
+        return;
+      }
+    } else {
+      p.outro('Nothing to do.');
+      return;
+    }
+  } else if (process.stdin.isTTY) {
+    const shouldContinue = await p.confirm({
+      message: 'Are you sure you want to uninstall claude-mem?',
+      initialValue: false,
+    });
+
+    if (p.isCancel(shouldContinue) || !shouldContinue) {
+      p.cancel('Uninstall cancelled.');
+      return;
+    }
+  }
+
+  // Stop the worker first (best-effort)
+  try {
+    const workerPort = process.env.CLAUDE_MEM_WORKER_PORT || '37777';
+    await fetch(`http://127.0.0.1:${workerPort}/api/admin/shutdown`, {
+      method: 'POST',
+      signal: AbortSignal.timeout(5000),
+    });
+    p.log.info('Worker service stopped.');
+  } catch {
+    // Worker may not be running — that is fine
+  }
+
+  await p.tasks([
+    {
+      title: 'Removing marketplace directory',
+      task: async () => {
+        const removed = removeMarketplaceDirectory();
+        return removed
+          ? `Marketplace directory removed ${pc.green('OK')}`
+          : `Marketplace directory not found ${pc.dim('skipped')}`;
+      },
+    },
+    {
+      title: 'Removing cache directory',
+      task: async () => {
+        const removed = removeCacheDirectory();
+        return removed
+          ? `Cache directory removed ${pc.green('OK')}`
+          : `Cache directory not found ${pc.dim('skipped')}`;
+      },
+    },
+    {
+      title: 'Removing marketplace registration',
+      task: async () => {
+        removeFromKnownMarketplaces();
+        return `Marketplace registration removed ${pc.green('OK')}`;
+      },
+    },
+    {
+      title: 'Removing plugin registration',
+      task: async () => {
+        removeFromInstalledPlugins();
+        return `Plugin registration removed ${pc.green('OK')}`;
+      },
+    },
+    {
+      title: 'Removing from Claude settings',
+      task: async () => {
+        removeFromClaudeSettings();
+        return `Claude settings updated ${pc.green('OK')}`;
+      },
+    },
+  ]);
+
+  p.note(
+    [
+      `Your data directory at ${pc.cyan('~/.claude-mem')} was preserved.`,
+      'To remove it manually: rm -rf ~/.claude-mem',
+    ].join('\n'),
+    'Note',
+  );
+
+  p.outro(pc.green('claude-mem has been uninstalled.'));
+}