feat(logging): add comprehensive logging to all API routes (Phase 4)

Applied withLogging() wrapper to all 24 API routes for consistent logging:

Process Control Routes:
- Start/stop/restart individual processes
- Start-all/stop-all/restart-all batch operations

Signal Routes:
- Signal individual processes
- Signal all processes
- Signal process groups

Group Management Routes:
- Start/stop/restart process groups
- Signal operations for groups

Configuration Routes:
- Get all configs (GET)
- Reload configuration (POST)
- Add/remove process groups (POST/DELETE)

Log Routes:
- Read main supervisord log
- Read process stdout/stderr logs
- Clear process logs (individual and all)

System Routes:
- Get system info
- Get all processes info
- Get individual process info
- Send stdin to process

All routes now include:
- Request/response logging with timing
- Automatic error handling and correlation IDs
- X-Request-ID header propagation
- Consistent metadata in responses

Also fixed Next.js 16 deprecation:
- Moved experimental.serverComponentsExternalPackages to serverExternalPackages

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/api/supervisor/config/group/route.ts

@@ -1,60 +1,45 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { createSupervisorClient } from '@/lib/supervisor/client';
+import { withLogging } from '@/lib/utils/api-logger';
 
-// POST - Add a process group
-export async function POST(request: NextRequest) {
-  try {
-    const body = await request.json();
-    const { name } = body;
+export const POST = withLogging(async (request: NextRequest) => {
+  const body = await request.json();
+  const { name } = body;
 
-    if (!name) {
-      return NextResponse.json(
-        { error: 'Group name is required' },
-        { status: 400 }
-      );
-    }
-
-    const client = createSupervisorClient();
-    const result = await client.addProcessGroup(name);
-
-    return NextResponse.json({
-      success: result,
-      message: `Process group '${name}' added successfully`,
-    });
-  } catch (error: any) {
-    console.error('Supervisor add process group error:', error);
+  if (!name) {
     return NextResponse.json(
-      { error: error.message || 'Failed to add process group' },
-      { status: 500 }
+      { error: 'Group name is required' },
+      { status: 400 }
     );
   }
-}
 
-// DELETE - Remove a process group
-export async function DELETE(request: NextRequest) {
-  try {
-    const body = await request.json();
-    const { name } = body;
+  const client = createSupervisorClient();
+  const result = await client.addProcessGroup(name);
 
-    if (!name) {
-      return NextResponse.json(
-        { error: 'Group name is required' },
-        { status: 400 }
-      );
-    }
+  return NextResponse.json({
+    success: result,
+    message: `Process group '${name}' added successfully`,
+    groupName: name,
+  });
+}, 'addProcessGroup');
 
-    const client = createSupervisorClient();
-    const result = await client.removeProcessGroup(name);
+export const DELETE = withLogging(async (request: NextRequest) => {
+  const body = await request.json();
+  const { name } = body;
 
-    return NextResponse.json({
-      success: result,
-      message: `Process group '${name}' removed successfully`,
-    });
-  } catch (error: any) {
-    console.error('Supervisor remove process group error:', error);
+  if (!name) {
     return NextResponse.json(
-      { error: error.message || 'Failed to remove process group' },
-      { status: 500 }
+      { error: 'Group name is required' },
+      { status: 400 }
     );
   }
-}
+
+  const client = createSupervisorClient();
+  const result = await client.removeProcessGroup(name);
+
+  return NextResponse.json({
+    success: result,
+    message: `Process group '${name}' removed successfully`,
+    groupName: name,
+  });
+}, 'removeProcessGroup');

app/api/supervisor/config/reload/route.ts

@@ -1,21 +1,14 @@
-import { NextResponse } from 'next/server';
+import { NextRequest, NextResponse } from 'next/server';
 import { createSupervisorClient } from '@/lib/supervisor/client';
+import { withLogging } from '@/lib/utils/api-logger';
 
-// POST - Reload configuration
-export async function POST() {
-  try {
-    const client = createSupervisorClient();
-    const result = await client.reloadConfig();
-    return NextResponse.json({
-      success: true,
-      message: 'Configuration reloaded',
-      result,
-    });
-  } catch (error: any) {
-    console.error('Supervisor reload config error:', error);
-    return NextResponse.json(
-      { error: error.message || 'Failed to reload configuration' },
-      { status: 500 }
-    );
-  }
-}
+export const POST = withLogging(async (request: NextRequest) => {
+  const client = createSupervisorClient();
+  const result = await client.reloadConfig();
+
+  return NextResponse.json({
+    success: true,
+    message: 'Configuration reloaded',
+    result,
+  });
+}, 'reloadConfig');

app/api/supervisor/config/route.ts

@@ -1,17 +1,9 @@
-import { NextResponse } from 'next/server';
+import { NextRequest, NextResponse } from 'next/server';
 import { createSupervisorClient } from '@/lib/supervisor/client';
+import { withLogging } from '@/lib/utils/api-logger';
 
-// GET - Get all process configurations
-export async function GET() {
-  try {
-    const client = createSupervisorClient();
-    const configs = await client.getAllConfigInfo();
-    return NextResponse.json(configs);
-  } catch (error: any) {
-    console.error('Supervisor get config error:', error);
-    return NextResponse.json(
-      { error: error.message || 'Failed to fetch configuration' },
-      { status: 500 }
-    );
-  }
-}
+export const GET = withLogging(async (request: NextRequest) => {
+  const client = createSupervisorClient();
+  const configs = await client.getAllConfigInfo();
+  return NextResponse.json(configs);
+}, 'getAllConfigInfo');