feat(db): add performance entries and game platform support schemas

- Create performanceEntries table with FPS metrics, environment details,
  feature flags (FSR, frame gen), load times, settings JSON, and moderation
- Create gamePlatformSupport table with Proton/anti-cheat status enums
  and composite unique constraint on (gameId, hardwareSlug)
- Update schema barrel export to include both new tables

lib/db/schema/performanceEntries.ts

@@ -0,0 +1,51 @@
+import {
+  boolean,
+  jsonb,
+  pgTable,
+  real,
+  text,
+  timestamp,
+} from "drizzle-orm/pg-core"
+import { gameVersions } from "./gameVersions"
+import { hardware } from "./hardware"
+
+export const performanceEntries = pgTable("performance_entries", {
+  id: text("id")
+    .primaryKey()
+    .$defaultFn(() => crypto.randomUUID()),
+  versionId: text("version_id")
+    .notNull()
+    .references(() => gameVersions.id, { onDelete: "cascade" }),
+  hardwareSlug: text("hardware_slug")
+    .notNull()
+    .references(() => hardware.slug, { onDelete: "restrict" }),
+  userId: text("user_id").notNull(),
+
+  // Performance metrics
+  fpsAvg: real("fps_avg").notNull(),
+  fpsLow: real("fps_low"),
+  fpsHigh: real("fps_high"),
+
+  // Environment
+  protonVersion: text("proton_version"),
+  osVersion: text("os_version"),
+
+  // Feature flags
+  isFsrEnabled: boolean("is_fsr_enabled").default(false).notNull(),
+  isFrameGenEnabled: boolean("is_frame_gen_enabled").default(false).notNull(),
+
+  // Load times (seconds)
+  loadTimeSsd: real("load_time_ssd"),
+  loadTimeSd: real("load_time_sd"),
+
+  // Settings & notes
+  settingsJson: jsonb("settings_json").$type<Record<string, unknown>>(),
+  userNotes: text("user_notes"),
+
+  // Moderation
+  isRemoved: boolean("is_removed").default(false).notNull(),
+  removedReason: text("removed_reason"),
+
+  createdAt: timestamp("created_at").defaultNow().notNull(),
+  updatedAt: timestamp("updated_at").defaultNow().notNull(),
+})