diff --git a/ROADMAP.md b/ROADMAP.md
index 1cbb110..97f74dc 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -4,6 +4,7 @@
 
 ## Completed
 
+- [x] Deduplicate DB schema: e2e seeders now reuse `migrate()` from `src/db/migrations.ts` instead of inline CREATE TABLE statements
 - [x] Display cost summary in dashboard stats bar (Overall$) and session cards
 - [x] Add comprehensive end-to-end tests for dashboard
 - [x] Auto-set npm version from release tag in CI publish workflow
diff --git a/tests/e2e/seed-db.ts b/tests/e2e/seed-db.ts
index 56b3739..b9ab03e 100644
--- a/tests/e2e/seed-db.ts
+++ b/tests/e2e/seed-db.ts
@@ -1,6 +1,7 @@
 import { Database } from "bun:sqlite";
 import { mkdirSync, rmSync } from "node:fs";
 import { dirname } from "node:path";
+import { migrate } from "../../src/db/migrations";
 
 const dbPath = process.env.OPENCODE_USAGE_STATS_DB;
 
@@ -13,67 +14,7 @@ rmSync(dbPath, { force: true });
 
 const db = new Database(dbPath);
 
-// --- Schema ---
-
-db.run(`
-  CREATE TABLE IF NOT EXISTS sessions (
-    session_id  TEXT PRIMARY KEY,
-    project_id  TEXT,
-    parent_id   TEXT,
-    title       TEXT,
-    directory   TEXT,
-    first_seen  TEXT NOT NULL DEFAULT (datetime('now')),
-    last_seen   TEXT NOT NULL DEFAULT (datetime('now'))
-  )
-`);
-
-db.run(`
-  CREATE TABLE IF NOT EXISTS messages (
-    id            INTEGER PRIMARY KEY AUTOINCREMENT,
-    timestamp     TEXT    NOT NULL DEFAULT (datetime('now')),
-    session_id    TEXT    NOT NULL,
-    message_id    TEXT    NOT NULL,
-    role          TEXT    NOT NULL,
-    model_id      TEXT,
-    provider_id   TEXT,
-    input_tokens  INTEGER DEFAULT 0,
-    output_tokens INTEGER DEFAULT 0,
-    reasoning_tokens INTEGER DEFAULT 0,
-    cache_read_tokens  INTEGER DEFAULT 0,
-    cache_write_tokens INTEGER DEFAULT 0,
-    cost          REAL    DEFAULT 0,
-    agent         TEXT,
-    UNIQUE(session_id, message_id)
-  )
-`);
-
-db.run(`
-  CREATE TABLE IF NOT EXISTS tool_calls (
-    id          INTEGER PRIMARY KEY AUTOINCREMENT,
-    timestamp   TEXT    NOT NULL DEFAULT (datetime('now')),
-    session_id  TEXT    NOT NULL,
-    call_id     TEXT    NOT NULL UNIQUE,
-    tool_name   TEXT    NOT NULL,
-    agent_type  TEXT,
-    description TEXT,
-    duration_ms INTEGER,
-    agent       TEXT,
-    model_id    TEXT,
-    provider_id TEXT
-  )
-`);
-
-db.run(`
-  CREATE TABLE IF NOT EXISTS daily_usage (
-    day               TEXT PRIMARY KEY,
-    tokens_total      INTEGER NOT NULL DEFAULT 0,
-    cost_total        REAL    NOT NULL DEFAULT 0,
-    sessions_count    INTEGER NOT NULL DEFAULT 0,
-    messages_count    INTEGER NOT NULL DEFAULT 0,
-    tool_calls_count  INTEGER NOT NULL DEFAULT 0,
-    updated_at        TEXT    NOT NULL DEFAULT (datetime('now'))
-  )
-`);
+migrate(db);
 
 // --- Helper: date strings relative to now ---
 
diff --git a/tests/e2e/seed-empty-db.ts b/tests/e2e/seed-empty-db.ts
index 59f770e..f830643 100644
--- a/tests/e2e/seed-empty-db.ts
+++ b/tests/e2e/seed-empty-db.ts
@@ -1,6 +1,7 @@
 import { Database } from "bun:sqlite";
 import { mkdirSync, rmSync } from "node:fs";
 import { dirname } from "node:path";
+import { migrate } from "../../src/db/migrations";
 
 const dbPath = process.env.OPENCODE_USAGE_STATS_DB;
 
@@ -13,64 +14,6 @@ rmSync(dbPath, { force: true });
 
 const db = new Database(dbPath);
 
-db.run(`
-  CREATE TABLE IF NOT EXISTS sessions (
-    session_id  TEXT PRIMARY KEY,
-    project_id  TEXT,
-    parent_id   TEXT,
-    title       TEXT,
-    directory   TEXT,
-    first_seen  TEXT NOT NULL DEFAULT (datetime('now')),
-    last_seen   TEXT NOT NULL DEFAULT (datetime('now'))
-  )
-`);
-
-db.run(`
-  CREATE TABLE IF NOT EXISTS messages (
-    id            INTEGER PRIMARY KEY AUTOINCREMENT,
-    timestamp     TEXT    NOT NULL DEFAULT (datetime('now')),
-    session_id    TEXT    NOT NULL,
-    message_id    TEXT    NOT NULL,
-    role          TEXT    NOT NULL,
-    model_id      TEXT,
-    provider_id   TEXT,
-    input_tokens  INTEGER DEFAULT 0,
-    output_tokens INTEGER DEFAULT 0,
-    reasoning_tokens INTEGER DEFAULT 0,
-    cache_read_tokens  INTEGER DEFAULT 0,
-    cache_write_tokens INTEGER DEFAULT 0,
-    cost          REAL    DEFAULT 0,
-    agent         TEXT,
-    UNIQUE(session_id, message_id)
-  )
-`);
-
-db.run(`
-  CREATE TABLE IF NOT EXISTS tool_calls (
-    id          INTEGER PRIMARY KEY AUTOINCREMENT,
-    timestamp   TEXT    NOT NULL DEFAULT (datetime('now')),
-    session_id  TEXT    NOT NULL,
-    call_id     TEXT    NOT NULL UNIQUE,
-    tool_name   TEXT    NOT NULL,
-    agent_type  TEXT,
-    description TEXT,
-    duration_ms INTEGER,
-    agent       TEXT,
-    model_id    TEXT,
-    provider_id TEXT
-  )
-`);
-
-db.run(`
-  CREATE TABLE IF NOT EXISTS daily_usage (
-    day               TEXT PRIMARY KEY,
-    tokens_total      INTEGER NOT NULL DEFAULT 0,
-    cost_total        REAL    NOT NULL DEFAULT 0,
-    sessions_count    INTEGER NOT NULL DEFAULT 0,
-    messages_count    INTEGER NOT NULL DEFAULT 0,
-    tool_calls_count  INTEGER NOT NULL DEFAULT 0,
-    updated_at        TEXT    NOT NULL DEFAULT (datetime('now'))
-  )
-`);
+migrate(db);
 
 db.close();