feat: add users, sessions, and api_keys tables

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

drizzle/meta/_journal.json

@@ -50,6 +50,13 @@
       "when": 1775214741464,
       "tag": "0006_hard_the_professor",
       "breakpoints": true
+    },
+    {
+      "idx": 7,
+      "version": "6",
+      "when": 1775215076284,
+      "tag": "0007_icy_prodigy",
+      "breakpoints": true
     }
   ]
 }