feat: Add api-platform project type detection

Detects projects with api/ directory + vercel.json or wrangler config
as api-platform instead of static-site. Adds slot category mapping
for frontend, backend, universal, and human context slots.

Use case: Vercel Edge Function projects, Cloudflare Workers platforms,
serverless API platforms with HTML frontends.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Wolfe-Jam

src/core/slots.ts

@@ -98,6 +98,7 @@ export const APP_TYPE_CATEGORIES: Record<string, SlotCategory[]> = {
   backend: ['project', 'backend', 'universal', 'human'],
   'data-science': ['project', 'backend', 'human'],
   frontend: ['project', 'frontend', 'human'],
+  'api-platform': ['project', 'frontend', 'backend', 'universal', 'human'],
   fullstack: ['project', 'frontend', 'backend', 'universal', 'human'],
   svelte: ['project', 'frontend', 'backend', 'universal', 'human'],
   framework: ['project', 'frontend', 'backend', 'universal', 'human'],

src/detect/scanner.ts

@@ -236,10 +236,16 @@ export function detectProjectType(dir: string): string {
 
   // Static site detection — check for index.html before other detection
   const hasIndexHtml = existsSync(join(dir, 'index.html')) || existsSync(join(dir, 'index.htm'));
-  const hasStaticSiteMarkers = existsSync(join(dir, '404.html')) || 
+  const hasStaticSiteMarkers = existsSync(join(dir, '404.html')) ||
                                 existsSync(join(dir, 'about.html')) ||
                                 existsSync(join(dir, 'contact.html'));
 
+  // API platform detection — has API endpoints alongside HTML (Edge Functions, serverless)
+  const hasApiDir = existsSync(join(dir, 'api'));
+  const hasVercelJson = existsSync(join(dir, 'vercel.json'));
+  const hasWranglerConfig = existsSync(join(dir, 'wrangler.toml')) || existsSync(join(dir, 'wrangler.jsonc'));
+  if (hasApiDir && (hasIndexHtml || hasVercelJson || hasWranglerConfig)) {return 'api-platform';}
+
   // Full-stack detection
   const hasFrontend = frameworks.some(f => f.category === 'frontend');
   const hasBackend = frameworks.some(f => f.category === 'backend');