feat(db): add hardware seed script, db:seed command, and initial migration

- Create lib/db/seed.ts with idempotent hardware seeding
- Add db:seed script and fix db:* scripts to load .env.local via bun --env-file
- Generate initial Drizzle migration (0000_crazy_nick_fury)
- Apply migration and seed 3 hardware devices (steamdeck-oled, steamdeck-lcd, steam-machine)

drizzle/meta/_journal.json

@@ -0,0 +1,13 @@
+{
+  "version": "7",
+  "dialect": "postgresql",
+  "entries": [
+    {
+      "idx": 0,
+      "version": "7",
+      "when": 1777089104474,
+      "tag": "0000_crazy_nick_fury",
+      "breakpoints": true
+    }
+  ]
+}