feat(release): v2.0.4 — round-robin lastUsedAt persistence, zod standalone build fix

fix: persist lastUsedAt for round-robin + zod in standalone build (#218, #217)

CHANGELOG.md

@@ -7,6 +7,25 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ---
 
+## [2.0.4] — 2026-03-06
+
+> ### 🐛 Bug Fixes — Round-Robin Persistence & Docker Compatibility
+
+### 🐛 Bug Fixes
+
+- **#218 — Round-robin sticks to one account** — Added `last_used_at` column to `provider_connections` schema. Round-robin routing relied on `lastUsedAt` to rotate between accounts, but the column was missing from the database — the value was always `null`, causing selection to fall back to the same account. Includes auto-migration for existing databases
+- **#217 — `Cannot find module 'zod'` in Docker/standalone builds** — Added `zod` to `serverExternalPackages` in `next.config.mjs`. Next.js standalone builds weren't tracing `zod` through dynamic imports, causing crashes on Docker startup. Data is **not lost** — the crash prevented the server from reading the existing database
+
+### 📁 Files Changed
+
+| File                      | Change                                                 |
+| ------------------------- | ------------------------------------------------------ |
+| `src/lib/db/core.ts`      | Schema + migration + JSON migration for `last_used_at` |
+| `src/lib/db/providers.ts` | INSERT + UPDATE SQL for `last_used_at`                 |
+| `next.config.mjs`         | `serverExternalPackages: ['better-sqlite3', 'zod']`    |
+
+---
+
 ## [2.0.3] — 2026-03-05
 
 > ### 🐛 Bug Fixes & Quota System Hardening

next.config.mjs

@@ -6,7 +6,7 @@ const withNextIntl = createNextIntlPlugin("./src/i18n/request.ts");
 const nextConfig = {
   turbopack: {},
   output: "standalone",
-  serverExternalPackages: ["better-sqlite3"],
+  serverExternalPackages: ["better-sqlite3", "zod"],
   transpilePackages: ["@omniroute/open-sse"],
   allowedDevOrigins: ["192.168.*"],
   typescript: {

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "omniroute",
-  "version": "2.0.1",
+  "version": "2.0.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "omniroute",
-      "version": "2.0.1",
+      "version": "2.0.3",
       "hasInstallScript": true,
       "license": "MIT",
       "workspaces": [

package.json

@@ -1,6 +1,6 @@
 {
   "name": "omniroute",
-  "version": "2.0.3",
+  "version": "2.0.4",
   "description": "Smart AI Router with auto fallback — route to FREE & cheap models, zero downtime. Works with Cursor, Cline, Claude Desktop, Codex, and any OpenAI-compatible tool.",
   "type": "module",
   "bin": {

src/lib/db/core.ts

@@ -79,6 +79,7 @@ const SCHEMA_SQL = `
     token_type TEXT,
     consecutive_use_count INTEGER DEFAULT 0,
     rate_limit_protection INTEGER DEFAULT 0,
+    last_used_at TEXT,
     created_at TEXT NOT NULL,
     updated_at TEXT NOT NULL
   );
@@ -311,6 +312,10 @@ function ensureProviderConnectionsColumns(db: SqliteDatabase) {
       );
       console.log("[DB] Added provider_connections.rate_limit_protection column");
     }
+    if (!columnNames.has("last_used_at")) {
+      db.exec("ALTER TABLE provider_connections ADD COLUMN last_used_at TEXT");
+      console.log("[DB] Added provider_connections.last_used_at column");
+    }
   } catch (error: unknown) {
     const message = error instanceof Error ? error.message : String(error);
     console.warn("[DB] Failed to verify provider_connections schema:", message);
@@ -483,7 +488,7 @@ function migrateFromJson(db: SqliteDatabase, jsonPath: string) {
           rate_limited_until, health_check_interval, last_health_check_at,
           last_tested, api_key, id_token, provider_specific_data,
           expires_in, display_name, global_priority, default_model,
-          token_type, consecutive_use_count, rate_limit_protection, created_at, updated_at
+          token_type, consecutive_use_count, rate_limit_protection, last_used_at, created_at, updated_at
         ) VALUES (
           @id, @provider, @authType, @name, @email, @priority, @isActive,
           @accessToken, @refreshToken, @expiresAt, @tokenExpiresAt,
@@ -492,7 +497,7 @@ function migrateFromJson(db: SqliteDatabase, jsonPath: string) {
           @rateLimitedUntil, @healthCheckInterval, @lastHealthCheckAt,
           @lastTested, @apiKey, @idToken, @providerSpecificData,
           @expiresIn, @displayName, @globalPriority, @defaultModel,
-          @tokenType, @consecutiveUseCount, @rateLimitProtection, @createdAt, @updatedAt
+          @tokenType, @consecutiveUseCount, @rateLimitProtection, @lastUsedAt, @createdAt, @updatedAt
         )
       `);
 
@@ -533,6 +538,7 @@ function migrateFromJson(db: SqliteDatabase, jsonPath: string) {
           defaultModel: conn.defaultModel || null,
           tokenType: conn.tokenType || null,
           consecutiveUseCount: conn.consecutiveUseCount || 0,
+          lastUsedAt: conn.lastUsedAt || null,
           rateLimitProtection:
             conn.rateLimitProtection === true || conn.rateLimitProtection === 1 ? 1 : 0,
           createdAt: conn.createdAt || new Date().toISOString(),

src/lib/db/providers.ts

@@ -217,7 +217,7 @@ function _insertConnectionRow(db: DbLike, conn: JsonRecord) {
       rate_limited_until, health_check_interval, last_health_check_at,
       last_tested, api_key, id_token, provider_specific_data,
       expires_in, display_name, global_priority, default_model,
-      token_type, consecutive_use_count, rate_limit_protection, created_at, updated_at
+      token_type, consecutive_use_count, rate_limit_protection, last_used_at, created_at, updated_at
     ) VALUES (
       @id, @provider, @authType, @name, @email, @priority, @isActive,
       @accessToken, @refreshToken, @expiresAt, @tokenExpiresAt,
@@ -226,7 +226,7 @@ function _insertConnectionRow(db: DbLike, conn: JsonRecord) {
       @rateLimitedUntil, @healthCheckInterval, @lastHealthCheckAt,
       @lastTested, @apiKey, @idToken, @providerSpecificData,
       @expiresIn, @displayName, @globalPriority, @defaultModel,
-      @tokenType, @consecutiveUseCount, @rateLimitProtection, @createdAt, @updatedAt
+      @tokenType, @consecutiveUseCount, @rateLimitProtection, @lastUsedAt, @createdAt, @updatedAt
     )
   `
   ).run({
@@ -267,6 +267,7 @@ function _insertConnectionRow(db: DbLike, conn: JsonRecord) {
     consecutiveUseCount: conn.consecutiveUseCount || 0,
     rateLimitProtection:
       conn.rateLimitProtection === true || conn.rateLimitProtection === 1 ? 1 : 0,
+    lastUsedAt: conn.lastUsedAt || null,
     createdAt: conn.createdAt,
     updatedAt: conn.updatedAt,
   });
@@ -290,6 +291,7 @@ function _updateConnectionRow(db: DbLike, id: string, data: JsonRecord) {
       default_model = @defaultModel, token_type = @tokenType,
       consecutive_use_count = @consecutiveUseCount,
       rate_limit_protection = @rateLimitProtection,
+      last_used_at = @lastUsedAt,
       updated_at = @updatedAt
     WHERE id = @id
   `
@@ -331,6 +333,7 @@ function _updateConnectionRow(db: DbLike, id: string, data: JsonRecord) {
     consecutiveUseCount: data.consecutiveUseCount || 0,
     rateLimitProtection:
       data.rateLimitProtection === true || data.rateLimitProtection === 1 ? 1 : 0,
+    lastUsedAt: data.lastUsedAt || null,
     updatedAt: now,
   });
 }