chore: tune discovery tags

Refresh package keywords and GitHub topics around SaaS starter, source registry, and editable source positioning.

Author: jesseoue

package.json

@@ -69,23 +69,31 @@
     }
   },
   "keywords": [
-    "nextjs",
-    "typescript",
-    "drizzle",
+    "stackfoundry",
     "saas",
-    "registry",
+    "saas-starter",
+    "saas-boilerplate",
     "source-registry",
+    "shadcn-registry",
     "registry-blocks",
     "editable-source",
-    "modules",
-    "command",
+    "nextjs",
+    "typescript",
+    "fullstack",
+    "developer-tools",
+    "api-keys",
+    "billing",
+    "auth",
+    "drizzle",
     "stripe",
     "clerk",
     "vercel",
-    "open-source",
-    "developer-tools",
-    "saas-modules",
-    "fullstack"
+    "cloudflare",
+    "supabase",
+    "neon",
+    "upstash",
+    "resend",
+    "sentry"
   ],
   "author": {
     "name": "Jesse Ouellette",