feat: rewrite as moderation bot (Keiko)

Replaces the old AI companion bot with a full Discord moderation system.

Commands: warn, mute, unmute, kick, softban, ban, unban, prune
Logging: member join/leave, activity (messages/threads/voice), mod actions
Audit log: captures manual bans, kicks, timeouts, and unbans
Sanctions: posts to Hikari sanction API for all applicable actions

All commands are ephemeral and use Components v2. Permission and role
hierarchy checks are enforced on every applicable command.

package.json

@@ -1,13 +1,14 @@
 {
   "name": "keiko",
   "version": "1.0.0",
-  "description": "Naomi's personal AI assistant.",
+  "description": "Naomi's community moderation bot.",
   "main": "index.js",
   "type": "module",
   "scripts": {
     "build": "rm -rf prod && tsc",
     "lint": "eslint src --max-warnings 0",
-    "start": "op run --env-file=prod.env --no-masking -- node prod/index.js",
+    "register": "op run --env-file=prod.env --no-masking -- node prod/src/register.js",
+    "start": "op run --env-file=prod.env --no-masking -- node prod/src/index.js",
     "test": "echo \"No tests yet!\" && exit 0"
   },
   "keywords": [],
@@ -17,16 +18,13 @@
     "@nhcarrigan/eslint-config": "5.2.0",
     "@nhcarrigan/typescript-config": "4.0.0",
     "@types/node": "24.7.1",
-    "@vitest/coverage-istanbul": "3.2.4",
+    "@vitest/coverage-v8": "3.2.4",
     "eslint": "9.37.0",
     "typescript": "5.9.3",
     "vitest": "3.2.4"
   },
   "dependencies": {
-    "@anthropic-ai/sdk": "0.74.0",
-    "@nhcarrigan/discord-analytics": "0.0.6",
     "@nhcarrigan/logger": "1.1.1",
-    "discord.js": "14.25.1",
-    "fastify": "5.6.1"
+    "discord.js": "14.25.1"
   }
 }