feat: add database persistence (SQLite/PostgreSQL) and fix tests

  - Add better-sqlite3 and pg for database storage backends
  - Refactor store.ts into modular structure under store/ directory
  - Add PostgreSQL service to CI workflow for database tests
  - Fix agent-id test to validate agt- format with Crockford Base32
  - Fix integration test prompts and approval handling
  - Remove orphaned OPENAI_RESPONSES_* configurations

Author: Gui-Yue

.env.test.example

@@ -21,15 +21,6 @@ OPENAI_MODEL_ID=gpt-4.1
 OPENAI_BASE_URL=https://api.openai-next.com/v1
 OPENAI_API=chat
 
-# =============================================================================
-# OPENAI - Responses API (for reasoning models)
-# =============================================================================
-OPENAI_RESPONSES_API_KEY=replace-with-your-openai-key
-OPENAI_RESPONSES_MODEL_ID=gpt-5.2
-OPENAI_RESPONSES_BASE_URL=https://api.openai-next.com/v1
-OPENAI_RESPONSES_API=responses
-OPENAI_RESPONSES_REASONING_EFFORT=medium
-
 # =============================================================================
 # GEMINI (Google)
 # =============================================================================
@@ -38,3 +29,24 @@ GEMINI_MODEL_ID=gemini-3-flash-preview
 GEMINI_BASE_URL=https://generativelanguage.googleapis.com/v1beta
 GEMINI_ENABLE_INTERTWINED=1
 GEMINI_ENABLE_PDF=1
+
+# =============================================================================
+# PostgreSQL Database (for database store tests)
+# =============================================================================
+# PostgreSQL 测试数据库配置
+# 如果不配置，PostgresStore 测试将自动跳过
+#
+# 快速启动测试数据库（使用 Docker）：
+# docker run --name kode-postgres-test \
+#   -e POSTGRES_PASSWORD=testpass123 \
+#   -e POSTGRES_DB=kode_test \
+#   -p 5433:5432 -d postgres:16-alpine
+#
+# 停止并删除：
+# docker stop kode-postgres-test && docker rm kode-postgres-test
+
+POSTGRES_HOST=localhost
+POSTGRES_PORT=5433
+POSTGRES_DB=kode_test
+POSTGRES_USER=postgres
+POSTGRES_PASSWORD=testpass123

.github/workflows/ci.yml

@@ -38,6 +38,21 @@ jobs:
   unit-tests:
     name: Unit Tests
     runs-on: ubuntu-latest
+
+    services:
+      postgres:
+        image: postgres:16-alpine
+        env:
+          POSTGRES_PASSWORD: testpass123
+          POSTGRES_DB: kode_test
+        ports:
+          - 5433:5432
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
     steps:
       - uses: actions/checkout@v4
 
@@ -52,6 +67,12 @@ jobs:
 
       - name: Run unit tests
         run: npm run test:unit
+        env:
+          POSTGRES_HOST: localhost
+          POSTGRES_PORT: 5433
+          POSTGRES_DB: kode_test
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: testpass123
 
   # ===========================================================================
   # Stage 2: Provider E2E tests (run on every commit)
@@ -97,13 +118,6 @@ jobs:
           OPENAI_BASE_URL=${{ vars.OPENAI_BASE_URL }}
           OPENAI_API=chat
 
-          # OpenAI Responses
-          OPENAI_RESPONSES_API_KEY=${{ secrets.OPENAI_API_KEY }}
-          OPENAI_RESPONSES_MODEL_ID=${{ vars.OPENAI_RESPONSES_MODEL_ID }}
-          OPENAI_RESPONSES_BASE_URL=${{ vars.OPENAI_RESPONSES_BASE_URL }}
-          OPENAI_RESPONSES_API=responses
-          OPENAI_RESPONSES_REASONING_EFFORT=medium
-
           # Gemini
           GEMINI_API_KEY=${{ secrets.GEMINI_API_KEY }}
           GEMINI_MODEL_ID=${{ vars.GEMINI_MODEL_ID }}