Remove Sentry telemetry system from CodeGraph

Eliminates anonymous error reporting functionality that was collecting stack traces and error context via Sentry. Removes all telemetry-related code, configuration options, and documentation references.

src/installer/config-writer.ts

@@ -100,22 +100,18 @@ function writeJsonFile(filePath: string, data: Record<string, any>): void {
 /**
  * Get the MCP server configuration
  */
-function getMcpServerConfig(options?: { telemetry?: boolean }): Record<string, any> {
-  const config: Record<string, any> = {
+function getMcpServerConfig(): Record<string, any> {
+  return {
     type: 'stdio',
     command: 'codegraph',
     args: ['serve', '--mcp'],
   };
-  if (options?.telemetry === false) {
-    config.env = { CODEGRAPH_TELEMETRY: 'off' };
-  }
-  return config;
 }
 
 /**
  * Write the MCP server configuration to claude.json
  */
-export function writeMcpConfig(location: InstallLocation, options?: { telemetry?: boolean }): void {
+export function writeMcpConfig(location: InstallLocation): void {
   const claudeJsonPath = getClaudeJsonPath(location);
   const config = readJsonFile(claudeJsonPath);
 
@@ -125,7 +121,7 @@ export function writeMcpConfig(location: InstallLocation, options?: { telemetry?
   }
 
   // Add or update codegraph server
-  config.mcpServers.codegraph = getMcpServerConfig(options);
+  config.mcpServers.codegraph = getMcpServerConfig();
 
   writeJsonFile(claudeJsonPath, config);
 }

src/installer/index.ts

@@ -55,21 +55,9 @@ export async function runInstaller(): Promise<void> {
     const autoAllow = await promptAutoAllow();
     console.log();
 
-    // Step 4: Ask about anonymous error reporting
-    console.log(chalk.bold('  Send anonymous error reports?') + chalk.dim(' (Helps fix bugs — no source code collected)'));
-    console.log();
-    const enableTelemetry = await promptConfirm('Enable anonymous error reporting', true);
-
-    if (!enableTelemetry) {
-      info('Telemetry disabled');
-    } else {
-      success('Anonymous error reporting enabled');
-    }
-    console.log();
-
-    // Step 5: Write MCP configuration (includes telemetry env if opted out)
+    // Step 4: Write MCP configuration
     const alreadyHasMcp = hasMcpConfig(location);
-    writeMcpConfig(location, { telemetry: enableTelemetry });
+    writeMcpConfig(location);
 
     if (alreadyHasMcp) {
       success(`Updated MCP server in ${location === 'global' ? '~/.claude.json' : './.claude.json'}`);