fix: Use bare codegraph everywhere, add preuninstall cleanup

- Revert configs (MCP, hooks) to use bare `codegraph` command
- Remove all npx references from configs and messaging
- Add preuninstall script that runs on `npm uninstall -g` to clean up
  MCP server, permissions, hooks, and CLAUDE.md section
- Show uninstall instructions in post-install next steps

src/installer/banner.ts

@@ -113,21 +113,18 @@ export function warn(message: string): void {
 /**
  * Show the "next steps" section after installation
  */
-export function showNextSteps(location: 'global' | 'local', codegraphAvailable?: boolean): void {
+export function showNextSteps(location: 'global' | 'local'): void {
   console.log();
   console.log(chalk.bold('  Done!') + ' Restart Claude Code to use CodeGraph.');
   console.log();
 
   if (location === 'global') {
-    const cmd = codegraphAvailable ? 'codegraph' : 'npx @colbymchenry/codegraph';
     console.log(chalk.dim('  Quick start:'));
     console.log(chalk.dim('    cd your-project'));
-    console.log(chalk.cyan(`    ${cmd} init -i`));
-    if (!codegraphAvailable) {
-      console.log();
-      console.log(chalk.dim('  Tip: For a shorter command, install globally:'));
-      console.log(chalk.dim('    npm install -g @colbymchenry/codegraph'));
-    }
+    console.log(chalk.cyan('    codegraph init -i'));
+    console.log();
+    console.log(chalk.dim('  To uninstall:'));
+    console.log(chalk.dim('    npm uninstall -g @colbymchenry/codegraph'));
   } else {
     console.log(chalk.dim('  CodeGraph is ready to use in this project!'));
   }

src/installer/config-writer.ts

@@ -98,13 +98,13 @@ function writeJsonFile(filePath: string, data: Record<string, any>): void {
 }
 
 /**
- * Get the MCP server configuration — always uses npx for reliability
+ * Get the MCP server configuration
  */
 function getMcpServerConfig(): Record<string, any> {
   return {
     type: 'stdio',
-    command: 'npx',
-    args: ['@colbymchenry/codegraph', 'serve', '--mcp'],
+    command: 'codegraph',
+    args: ['serve', '--mcp'],
   };
 }
 
@@ -203,7 +203,7 @@ export function hasPermissions(location: InstallLocation): boolean {
  * Stop → sync-if-dirty (sync, ensures fresh index before next user turn)
  */
 function getHooksConfig(): Record<string, any> {
-  const command = 'npx @colbymchenry/codegraph';
+  const command = 'codegraph';
 
   return {
     PostToolUse: [

src/installer/index.ts

@@ -25,13 +25,10 @@ export async function runInstaller(): Promise<void> {
   showBanner();
 
   try {
-    // Step 1: Try global install for bare `codegraph` command convenience.
-    // This is best-effort — configs always use npx regardless.
-    let codegraphAvailable = false;
+    // Step 1: Ensure codegraph is installed globally
     try {
       const checkCmd = process.platform === 'win32' ? 'where codegraph' : 'command -v codegraph';
       execSync(checkCmd, { stdio: 'pipe' });
-      codegraphAvailable = true;
     } catch {
       // Not installed globally yet — try to install
       console.log(chalk.dim('  Installing codegraph globally...'));
@@ -40,18 +37,16 @@ export async function runInstaller(): Promise<void> {
         // Verify it actually worked (PATH may not include npm global bin)
         try {
           execSync(process.platform === 'win32' ? 'where codegraph' : 'command -v codegraph', { stdio: 'pipe' });
-          codegraphAvailable = true;
           success('Installed codegraph command globally');
         } catch {
           // Install "succeeded" but command not in PATH — common with nvm/fnm
           info('Global install succeeded but codegraph is not in your PATH');
-          info('You may need to add npm\'s global bin to your PATH, or use:');
-          info('  npx @colbymchenry/codegraph <command>');
+          info('You may need to add npm\'s global bin directory to your PATH');
+          info('Then restart your terminal and run: codegraph init -i');
         }
       } catch {
         info('Could not install globally (permission denied)');
-        info('You can install manually with: sudo npm install -g @colbymchenry/codegraph');
-        info('Or use: npx @colbymchenry/codegraph <command>');
+        info('Try: sudo npm install -g @colbymchenry/codegraph');
       }
       console.log();
     }
@@ -113,7 +108,7 @@ export async function runInstaller(): Promise<void> {
     }
 
     // Show next steps
-    showNextSteps(location, codegraphAvailable);
+    showNextSteps(location);
   } catch (err) {
     console.log();
     if (err instanceof Error && err.message.includes('readline was closed')) {
@@ -139,7 +134,7 @@ async function initializeLocalProject(): Promise<void> {
   } catch (err) {
     const msg = err instanceof Error ? err.message : String(err);
     error(`Could not load native modules: ${msg}`);
-    info('Skipping project initialization. You can run "npx @colbymchenry/codegraph init -i" later.');
+    info('Skipping project initialization. You can run "codegraph init -i" later.');
     info('If this persists, try a Node.js LTS version (20 or 22).');
     return;
   }