chore: update homepage to wiki, add keywords for npm discoverability

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: idapixl

package.json

@@ -72,15 +72,19 @@
     "fsrs",
     "mcp",
     "ai-agent",
-    "embeddings"
+    "embeddings",
+    "fozikio",
+    "persistent-memory",
+    "knowledge-graph",
+    "spaced-repetition"
   ],
   "license": "MIT",
   "author": "Fozikio <hello@fozikio.com>",
   "repository": {
     "type": "git",
     "url": "https://github.com/Fozikio/cortex-engine.git"
   },
-  "homepage": "https://fozikio.com",
+  "homepage": "https://github.com/Fozikio/cortex-engine/wiki",
   "funding": {
     "type": "github",
     "url": "https://github.com/sponsors/idapixl"