diff --git a/packages/models/src/danmaku-cache.ts b/packages/models/src/danmaku-cache.ts
new file mode 100644
index 0000000..71f162c
--- /dev/null
+++ b/packages/models/src/danmaku-cache.ts
@@ -0,0 +1,20 @@
+import { sql } from "drizzle-orm";
+import { integer, sqliteTable, text, uniqueIndex } from "drizzle-orm/sqlite-core";
+
+export const danmakuCache = sqliteTable(
+    "danmaku_cache",
+    {
+        id: text("id")
+            .primaryKey()
+            .$defaultFn(() => crypto.randomUUID()),
+        matchKey: text("match_key").notNull(),
+        payload: text("payload").notNull(),
+        source: text("source").notNull().default("open-network"),
+        expiresAt: integer("expires_at", { mode: "timestamp" }),
+        createdAt: integer("created_at", { mode: "timestamp" })
+            .notNull()
+            .default(sql`(unixepoch())`),
+    },
+    (t) => [uniqueIndex("danmaku_match_key_uq").on(t.matchKey)],
+);
+export type DanmakuCacheRow = typeof danmakuCache.$inferSelect;
diff --git a/packages/models/src/index.ts b/packages/models/src/index.ts
index f9be369..c8da20f 100644
--- a/packages/models/src/index.ts
+++ b/packages/models/src/index.ts
@@ -5,3 +5,11 @@ export { sessions } from "./sessions.js";
 export type { Session, NewSession } from "./sessions.js";
 export { passwordResets } from "./password-resets.js";
 export type { PasswordReset, NewPasswordReset } from "./password-resets.js";
+export { mounts } from "./mounts.js";
+export type { Mount, NewMount } from "./mounts.js";
+export { mediaItems } from "./media-items.js";
+export type { MediaItem, NewMediaItem } from "./media-items.js";
+export { playbackProgress } from "./playback-progress.js";
+export type { PlaybackProgress } from "./playback-progress.js";
+export { danmakuCache } from "./danmaku-cache.js";
+export type { DanmakuCacheRow } from "./danmaku-cache.js";
diff --git a/packages/models/src/media-items.ts b/packages/models/src/media-items.ts
new file mode 100644
index 0000000..bba4d60
--- /dev/null
+++ b/packages/models/src/media-items.ts
@@ -0,0 +1,37 @@
+import { sql } from "drizzle-orm";
+import { integer, sqliteTable, text, uniqueIndex } from "drizzle-orm/sqlite-core";
+import { users } from "./users.js";
+import { mounts } from "./mounts.js";
+
+export const mediaItems = sqliteTable(
+    "media_items",
+    {
+        id: text("id")
+            .primaryKey()
+            .$defaultFn(() => crypto.randomUUID()),
+        userId: text("user_id")
+            .notNull()
+            .references(() => users.id, { onDelete: "cascade" }),
+        mountId: text("mount_id").references(() => mounts.id, { onDelete: "set null" }),
+        path: text("path").notNull(),
+        rawName: text("raw_name").notNull(),
+        title: text("title").notNull(),
+        size: integer("size").notNull().default(0),
+        mime: text("mime"),
+        bangumiId: integer("bangumi_id"),
+        epNumber: integer("ep_number"),
+        scrapeStatus: text("scrape_status").notNull().default("pending"),
+        scrapedAt: integer("scraped_at", { mode: "timestamp" }),
+        posterUrl: text("poster_url"),
+        matchedHash: text("matched_hash"),
+        scannedAt: integer("scanned_at", { mode: "timestamp" })
+            .notNull()
+            .default(sql`(unixepoch())`),
+        updatedAt: integer("updated_at", { mode: "timestamp" })
+            .notNull()
+            .default(sql`(unixepoch())`),
+    },
+    (t) => [uniqueIndex("media_user_path_uq").on(t.userId, t.path)],
+);
+export type MediaItem = typeof mediaItems.$inferSelect;
+export type NewMediaItem = typeof mediaItems.$inferInsert;
diff --git a/packages/models/src/mounts.ts b/packages/models/src/mounts.ts
new file mode 100644
index 0000000..ec38551
--- /dev/null
+++ b/packages/models/src/mounts.ts
@@ -0,0 +1,32 @@
+import { sql } from "drizzle-orm";
+import { integer, sqliteTable, text, uniqueIndex } from "drizzle-orm/sqlite-core";
+import { users } from "./users.js";
+
+export const mounts = sqliteTable(
+    "mounts",
+    {
+        id: text("id")
+            .primaryKey()
+            .$defaultFn(() => crypto.randomUUID()),
+        userId: text("user_id")
+            .notNull()
+            .references(() => users.id, { onDelete: "cascade" }),
+        name: text("name").notNull(),
+        type: text("type").notNull().default("webdav"),
+        baseUrl: text("base_url").notNull(),
+        username: text("username"),
+        /** AES-GCM 密文（base64），永不回传前端 */
+        secretEnc: text("secret_enc").notNull().default(""),
+        rootPath: text("root_path").notNull().default("/"),
+        enabled: integer("enabled", { mode: "boolean" }).notNull().default(true),
+        createdAt: integer("created_at", { mode: "timestamp" })
+            .notNull()
+            .default(sql`(unixepoch())`),
+        updatedAt: integer("updated_at", { mode: "timestamp" })
+            .notNull()
+            .default(sql`(unixepoch())`),
+    },
+    (t) => [uniqueIndex("mounts_user_name_uq").on(t.userId, t.name)],
+);
+export type Mount = typeof mounts.$inferSelect;
+export type NewMount = typeof mounts.$inferInsert;
diff --git a/packages/models/src/playback-progress.ts b/packages/models/src/playback-progress.ts
new file mode 100644
index 0000000..6b493b1
--- /dev/null
+++ b/packages/models/src/playback-progress.ts
@@ -0,0 +1,26 @@
+import { sql } from "drizzle-orm";
+import { integer, sqliteTable, text, uniqueIndex } from "drizzle-orm/sqlite-core";
+import { users } from "./users.js";
+import { mediaItems } from "./media-items.js";
+
+export const playbackProgress = sqliteTable(
+    "playback_progress",
+    {
+        id: text("id")
+            .primaryKey()
+            .$defaultFn(() => crypto.randomUUID()),
+        userId: text("user_id")
+            .notNull()
+            .references(() => users.id, { onDelete: "cascade" }),
+        mediaItemId: text("media_item_id")
+            .notNull()
+            .references(() => mediaItems.id, { onDelete: "cascade" }),
+        positionMs: integer("position_ms").notNull().default(0),
+        durationMs: integer("duration_ms").notNull().default(0),
+        updatedAt: integer("updated_at", { mode: "timestamp" })
+            .notNull()
+            .default(sql`(unixepoch())`),
+    },
+    (t) => [uniqueIndex("progress_user_media_uq").on(t.userId, t.mediaItemId)],
+);
+export type PlaybackProgress = typeof playbackProgress.$inferSelect;