From eaa1fb956d990871f935ec61deca0eaea7bd41d7 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 31 Oct 2025 21:49:06 +0000
Subject: [PATCH 1/3] Initial plan


From 4bc8a649c9a8763dac78ab38d58a7a10482c6433 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 31 Oct 2025 21:53:50 +0000
Subject: [PATCH 2/3] Install Express.js and create simple backend app with API
 endpoints

Co-authored-by: ymc9 <104139426+ymc9@users.noreply.github.com>
---
 README.md         |  26 +-
 main.ts           |  63 +++-
 package-lock.json | 749 +++++++++++++++++++++++++++++++++++++++++++++-
 package.json      |   2 +
 4 files changed, 835 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index a0ad652..cd91b70 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,33 @@
 # ZenStack V3 Quick Start Project
 
-The project demonstrates a minimum TypeScript application that uses ZenStack with Sql.js (a WASM port of SQLite).
+The project demonstrates a minimum TypeScript application that uses ZenStack with Sql.js (a WASM port of SQLite) and Express.js as a backend server.
+
+## Setup
 
 To run the project:
 
 - `npm install`
 - `npm run generate`
 - `npm run dev`
+
+The server will start on `http://localhost:3000`.
+
+## API Endpoints
+
+- `GET /` - Welcome message
+- `GET /api/users` - Get all users with their posts
+- `GET /api/posts` - Get all posts with author information
+- `GET /api/posts/:id` - Get a specific post by ID with author information
+
+## Example Usage
+
+```bash
+# Get all users
+curl http://localhost:3000/api/users
+
+# Get all posts
+curl http://localhost:3000/api/posts
+
+# Get a specific post
+curl http://localhost:3000/api/posts/1
+```
diff --git a/main.ts b/main.ts
index 17a2135..5d93623 100644
--- a/main.ts
+++ b/main.ts
@@ -1,8 +1,69 @@
+import express from 'express';
 import { createClient } from './db';
+import { createUsersAndPosts } from './utils';
 
 async function main() {
   const db = await createClient();
-
+  
+  // Seed database with sample data
+  await createUsersAndPosts(db);
+  
+  const app = express();
+  const port = process.env.PORT || 3000;
+  
+  // Middleware
+  app.use(express.json());
+  
+  // Routes
+  app.get('/', (req, res) => {
+    res.json({ message: 'Welcome to ZenStack Express Server!' });
+  });
+  
+  // Get all users
+  app.get('/api/users', async (req, res) => {
+    try {
+      const users = await db.user.findMany({
+        include: { posts: true }
+      });
+      res.json(users);
+    } catch (error) {
+      res.status(500).json({ error: 'Failed to fetch users' });
+    }
+  });
+  
+  // Get all posts
+  app.get('/api/posts', async (req, res) => {
+    try {
+      const posts = await db.post.findMany({
+        include: { author: true }
+      });
+      res.json(posts);
+    } catch (error) {
+      res.status(500).json({ error: 'Failed to fetch posts' });
+    }
+  });
+  
+  // Get post by id
+  app.get('/api/posts/:id', async (req, res) => {
+    try {
+      const post = await db.post.findUnique({
+        where: { id: parseInt(req.params.id) },
+        include: { author: true }
+      });
+      if (!post) {
+        res.status(404).json({ error: 'Post not found' });
+      } else {
+        res.json(post);
+      }
+    } catch (error) {
+      res.status(500).json({ error: 'Failed to fetch post' });
+    }
+  });
+  
+  // Start server
+  app.listen(port, () => {
+    console.log(`Server is running on http://localhost:${port}`);
+  });
 }
 
 main();
diff --git a/package-lock.json b/package-lock.json
index fb9e492..90de070 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,9 +8,11 @@
       "dependencies": {
         "@zenstackhq/kysely-sql-js": "next",
         "@zenstackhq/runtime": "next",
+        "express": "^5.1.0",
         "sql.js": "^1.13.0"
       },
       "devDependencies": {
+        "@types/express": "^5.0.5",
         "@types/node": "^24.1.0",
         "@types/sql.js": "^1.4.9",
         "@zenstackhq/cli": "next",
@@ -592,12 +594,72 @@
       "dev": true,
       "peer": true
     },
+    "node_modules/@types/body-parser": {
+      "version": "1.19.6",
+      "resolved": "https://registry.npmjs.org/@types/body-parser/-/body-parser-1.19.6.tgz",
+      "integrity": "sha512-HLFeCYgz89uk22N5Qg3dvGvsv46B8GLvKKo1zKG4NybA8U2DiEO3w9lqGg29t/tfLRJpJ6iQxnVw4OnB7MoM9g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/connect": "*",
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/connect": {
+      "version": "3.4.38",
+      "resolved": "https://registry.npmjs.org/@types/connect/-/connect-3.4.38.tgz",
+      "integrity": "sha512-K6uROf1LD88uDQqJCktA4yzL1YYAK6NgfsI0v/mTgyPKWsX1CnJ0XPSDhViejru1GcRkLWb8RlzFYJRqGUbaug==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/emscripten": {
       "version": "1.40.1",
       "resolved": "https://registry.npmjs.org/@types/emscripten/-/emscripten-1.40.1.tgz",
       "integrity": "sha512-sr53lnYkQNhjHNN0oJDdUm5564biioI5DuOpycufDVK7D3y+GR3oUswe2rlwY1nPNyusHbrJ9WoTyIHl4/Bpwg==",
       "dev": true
     },
+    "node_modules/@types/express": {
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/@types/express/-/express-5.0.5.tgz",
+      "integrity": "sha512-LuIQOcb6UmnF7C1PCFmEU1u2hmiHL43fgFQX67sN3H4Z+0Yk0Neo++mFsBjhOAuLzvlQeqAAkeDOZrJs9rzumQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/body-parser": "*",
+        "@types/express-serve-static-core": "^5.0.0",
+        "@types/serve-static": "^1"
+      }
+    },
+    "node_modules/@types/express-serve-static-core": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@types/express-serve-static-core/-/express-serve-static-core-5.1.0.tgz",
+      "integrity": "sha512-jnHMsrd0Mwa9Cf4IdOzbz543y4XJepXrbia2T4b6+spXC2We3t1y6K44D3mR8XMFSXMCf3/l7rCgddfx7UNVBA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*",
+        "@types/qs": "*",
+        "@types/range-parser": "*",
+        "@types/send": "*"
+      }
+    },
+    "node_modules/@types/http-errors": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/@types/http-errors/-/http-errors-2.0.5.tgz",
+      "integrity": "sha512-r8Tayk8HJnX0FztbZN7oVqGccWgw98T/0neJphO91KkmOzug1KkofZURD4UaD5uH8AqcFLfdPErnBod0u71/qg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@types/mime": {
+      "version": "1.3.5",
+      "resolved": "https://registry.npmjs.org/@types/mime/-/mime-1.3.5.tgz",
+      "integrity": "sha512-/pyBZWSLD2n0dcHE3hq8s8ZvcETHtEuF+3E7XVt0Ig2nvsVQXdghHVcEkIWjy9A0wKfTn97a/PSDYohKIlnP/w==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/node": {
       "version": "24.1.0",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-24.1.0.tgz",
@@ -614,6 +676,53 @@
       "dev": true,
       "peer": true
     },
+    "node_modules/@types/qs": {
+      "version": "6.14.0",
+      "resolved": "https://registry.npmjs.org/@types/qs/-/qs-6.14.0.tgz",
+      "integrity": "sha512-eOunJqu0K1923aExK6y8p6fsihYEn/BYuQ4g0CxAAgFc4b/ZLN4CrsRZ55srTdqoiLzU2B2evC+apEIxprEzkQ==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@types/range-parser": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/@types/range-parser/-/range-parser-1.2.7.tgz",
+      "integrity": "sha512-hKormJbkJqzQGhziax5PItDUTMAM9uE2XXQmM37dyd4hVM+5aVl7oVxMVUiVQn2oCQFN/LKCZdvSM0pFRqbSmQ==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@types/send": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@types/send/-/send-1.2.1.tgz",
+      "integrity": "sha512-arsCikDvlU99zl1g69TcAB3mzZPpxgw0UQnaHeC1Nwb015xp8bknZv5rIfri9xTOcMuaVgvabfIRA7PSZVuZIQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/serve-static": {
+      "version": "1.15.10",
+      "resolved": "https://registry.npmjs.org/@types/serve-static/-/serve-static-1.15.10.tgz",
+      "integrity": "sha512-tRs1dB+g8Itk72rlSI2ZrW6vZg0YrLI81iQSTkMmOqnqCaNr/8Ek4VwWcN5vZgCYWbg/JJSGBlUaYGAOP73qBw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/http-errors": "*",
+        "@types/node": "*",
+        "@types/send": "<1"
+      }
+    },
+    "node_modules/@types/serve-static/node_modules/@types/send": {
+      "version": "0.17.6",
+      "resolved": "https://registry.npmjs.org/@types/send/-/send-0.17.6.tgz",
+      "integrity": "sha512-Uqt8rPBE8SY0RK8JB1EzVOIZ32uqy8HwdxCnoCOsYrvnswqmFZ/k+9Ikidlk/ImhsdvBsloHbAlewb2IEBV/Og==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/mime": "^1",
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/sql.js": {
       "version": "1.4.9",
       "resolved": "https://registry.npmjs.org/@types/sql.js/-/sql.js-1.4.9.tgz",
@@ -721,6 +830,19 @@
         "typescript": "^5.0.0"
       }
     },
+    "node_modules/accepts": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-2.0.0.tgz",
+      "integrity": "sha512-5cvg6CtKwfgdmVqY1WIiXKc3Q1bkRqGLi+2W/6ao+6Y7gu/RCwRuAhGEzh5B4KlszSuTLgZYuqFqo5bImjNKng==",
+      "license": "MIT",
+      "dependencies": {
+        "mime-types": "^3.0.0",
+        "negotiator": "^1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
     "node_modules/ansi-regex": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
@@ -776,6 +898,26 @@
         "readable-stream": "^3.4.0"
       }
     },
+    "node_modules/body-parser": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-2.2.0.tgz",
+      "integrity": "sha512-02qvAaxv8tp7fBa/mw1ga98OGm+eCbqzJOKoRt70sLmfEEi+jyBYVTDGfCL/k06/4EMk/z01gCe7HoCH/f2LTg==",
+      "license": "MIT",
+      "dependencies": {
+        "bytes": "^3.1.2",
+        "content-type": "^1.0.5",
+        "debug": "^4.4.0",
+        "http-errors": "^2.0.0",
+        "iconv-lite": "^0.6.3",
+        "on-finished": "^2.4.1",
+        "qs": "^6.14.0",
+        "raw-body": "^3.0.0",
+        "type-is": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/buffer": {
       "version": "5.7.1",
       "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
@@ -800,6 +942,15 @@
         "ieee754": "^1.1.13"
       }
     },
+    "node_modules/bytes": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
+      "integrity": "sha512-/Nf7TyzTx6S3yRJObOAV7956r8cr2+Oj8AC5dt8wSP3BQAoeX58NoHyCU8P8zGkNXStjTSi6fzO6F0pBdcYbEg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/c12": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/c12/-/c12-3.1.0.tgz",
@@ -1029,6 +1180,62 @@
         "node": "^14.18.0 || >=16.10.0"
       }
     },
+    "node_modules/content-disposition": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-1.0.0.tgz",
+      "integrity": "sha512-Au9nRL8VNUut/XSzbQA38+M78dzP4D+eqg3gfJHMIHHYa3bg067xj1KxMUWj+VULbiZMowKngFFbKczUrNJ1mg==",
+      "license": "MIT",
+      "dependencies": {
+        "safe-buffer": "5.2.1"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/content-type": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.5.tgz",
+      "integrity": "sha512-nTjqfcBFEipKdXCv4YDQWCfmcLZKm81ldF0pAopTvyrFGVbcR6P/VAAd5G7N+0tTr8QqiU0tFadD6FK4NtJwOA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/cookie": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.7.2.tgz",
+      "integrity": "sha512-yki5XnKuf750l50uGTllt6kKILY4nQ1eNIQatoXEByZ5dWgnKqbnqmTrBE5B4N7lrMJKQ2ytWMiTO2o0v6Ew/w==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/cookie-signature": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.2.2.tgz",
+      "integrity": "sha512-D76uU73ulSXrD1UXF4KE2TMxVVwhsnCgfAyTg9k8P6KGZjlXKrOLe4dJQKI3Bxi5wjesZoFXJWElNWBjPZMbhg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.6.0"
+      }
+    },
+    "node_modules/debug": {
+      "version": "4.4.3",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
+      "integrity": "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA==",
+      "license": "MIT",
+      "dependencies": {
+        "ms": "^2.1.3"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/decimal.js": {
       "version": "10.6.0",
       "resolved": "https://registry.npmjs.org/decimal.js/-/decimal.js-10.6.0.tgz",
@@ -1079,6 +1286,15 @@
       "dev": true,
       "peer": true
     },
+    "node_modules/depd": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz",
+      "integrity": "sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/destr": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/destr/-/destr-2.0.5.tgz",
@@ -1112,6 +1328,12 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/ee-first": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
+      "integrity": "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow==",
+      "license": "MIT"
+    },
     "node_modules/effect": {
       "version": "3.16.12",
       "resolved": "https://registry.npmjs.org/effect/-/effect-3.16.12.tgz",
@@ -1123,6 +1345,15 @@
         "fast-check": "^3.23.1"
       }
     },
+    "node_modules/encodeurl": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-2.0.0.tgz",
+      "integrity": "sha512-Q0n9HRi4m6JuGIV1eFlmvJB7ZEVxu93IrMyiMsGC0lrMJMWzRgx6WGquyfQgZVb31vhGgXnfmPNNXmxnOkRBrg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/es-define-property": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/es-define-property/-/es-define-property-1.0.1.tgz",
@@ -1191,6 +1422,63 @@
         "@esbuild/win32-x64": "0.25.8"
       }
     },
+    "node_modules/escape-html": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
+      "integrity": "sha512-NiSupZ4OeuGwr68lGIeym/ksIZMJodUGOSCZ/FSnTxcrekbvqrgdUxlJOMpijaKZVjAJrWrGs/6Jy8OMuyj9ow==",
+      "license": "MIT"
+    },
+    "node_modules/etag": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
+      "integrity": "sha512-aIL5Fx7mawVa300al2BnEE4iNvo1qETxLrPI/o05L7z6go7fCw1J6EQmbK4FmJ2AS7kgVF/KEZWufBfdClMcPg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/express": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/express/-/express-5.1.0.tgz",
+      "integrity": "sha512-DT9ck5YIRU+8GYzzU5kT3eHGA5iL+1Zd0EutOmTE9Dtk+Tvuzd23VBU+ec7HPNSTxXYO55gPV/hq4pSBJDjFpA==",
+      "license": "MIT",
+      "dependencies": {
+        "accepts": "^2.0.0",
+        "body-parser": "^2.2.0",
+        "content-disposition": "^1.0.0",
+        "content-type": "^1.0.5",
+        "cookie": "^0.7.1",
+        "cookie-signature": "^1.2.1",
+        "debug": "^4.4.0",
+        "encodeurl": "^2.0.0",
+        "escape-html": "^1.0.3",
+        "etag": "^1.8.1",
+        "finalhandler": "^2.1.0",
+        "fresh": "^2.0.0",
+        "http-errors": "^2.0.0",
+        "merge-descriptors": "^2.0.0",
+        "mime-types": "^3.0.0",
+        "on-finished": "^2.4.1",
+        "once": "^1.4.0",
+        "parseurl": "^1.3.3",
+        "proxy-addr": "^2.0.7",
+        "qs": "^6.14.0",
+        "range-parser": "^1.2.1",
+        "router": "^2.2.0",
+        "send": "^1.1.0",
+        "serve-static": "^2.2.0",
+        "statuses": "^2.0.1",
+        "type-is": "^2.0.1",
+        "vary": "^1.1.2"
+      },
+      "engines": {
+        "node": ">= 18"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
+      }
+    },
     "node_modules/exsolve": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/exsolve/-/exsolve-1.0.7.tgz",
@@ -1221,6 +1509,23 @@
         "node": ">=8.0.0"
       }
     },
+    "node_modules/finalhandler": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-2.1.0.tgz",
+      "integrity": "sha512-/t88Ty3d5JWQbWYgaOGCCYfXRwV1+be02WqYYlL6h0lEiUAMPM8o8qKGO01YIkOHzka2up08wvgYD0mDiI+q3Q==",
+      "license": "MIT",
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+      "dependencies": {
+        "es-errors": "^1.3.0",
+        "object-inspect": "^1.13.3"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/side-channel-map": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/side-channel-map/-/side-channel-map-1.0.1.tgz",
+      "integrity": "sha512-VCjCNfgMsby3tTdo02nbjtM/ewra6jPHmpThenkTYh8pG9ucZ/1P8So4u4FGBek/BjpOVsDCMoLA/iuBKIFXRA==",
+      "license": "MIT",
+      "dependencies": {
+        "call-bound": "^1.0.2",
+        "es-errors": "^1.3.0",
+        "get-intrinsic": "^1.2.5",
+        "object-inspect": "^1.13.3"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/side-channel-weakmap": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/side-channel-weakmap/-/side-channel-weakmap-1.0.2.tgz",
+      "integrity": "sha512-WPS/HvHQTYnHisLo9McqBHOJk2FkHO/tlpvldyrnem4aeQp4hai3gythswg6p01oSoTl58rcpiFAjF2br2Ak2A==",
+      "license": "MIT",
+      "dependencies": {
+        "call-bound": "^1.0.2",
+        "es-errors": "^1.3.0",
+        "get-intrinsic": "^1.2.5",
+        "object-inspect": "^1.13.3",
+        "side-channel-map": "^1.0.1"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/signal-exit": {
       "version": "3.0.7",
       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.7.tgz",
@@ -1985,6 +2672,15 @@
       "resolved": "https://registry.npmjs.org/sql.js/-/sql.js-1.13.0.tgz",
       "integrity": "sha512-RJbVP1HRDlUUXahJ7VMTcu9Rm1Nzw+EBpoPr94vnbD4LwR715F3CcxE2G2k45PewcaZ57pjetYa+LoSJLAASgA=="
     },
+    "node_modules/statuses": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/statuses/-/statuses-2.0.2.tgz",
+      "integrity": "sha512-DvEy55V3DB7uknRo+4iOGT5fP1slR8wQohVdknigZPMpMstaKJQWhwiYBACJE3Ul2pTnATihhBYnRhZQHGBiRw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/string_decoder": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.3.0.tgz",
@@ -2025,6 +2721,15 @@
       "dev": true,
       "peer": true
     },
+    "node_modules/toidentifier": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.6"
+      }
+    },
     "node_modules/ts-pattern": {
       "version": "5.8.0",
       "resolved": "https://registry.npmjs.org/ts-pattern/-/ts-pattern-5.8.0.tgz",
@@ -2062,6 +2767,20 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/type-is": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-2.0.1.tgz",
+      "integrity": "sha512-OZs6gsjF4vMp32qrCbiVSkrFmXtG/AZhY3t0iAMrMBiAZyV9oALtXO8hsrHbMXF9x6L3grlFuwW2oAz7cav+Gw==",
+      "license": "MIT",
+      "dependencies": {
+        "content-type": "^1.0.5",
+        "media-typer": "^1.1.0",
+        "mime-types": "^3.0.0"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
     "node_modules/typescript": {
       "version": "5.9.2",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.2.tgz",
@@ -2102,6 +2821,15 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/unpipe": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
+      "integrity": "sha512-pjy2bYhSsufwWlKwPc+l3cN7+wuJlK6uz0YdJEOlQDbl6jo/YlPi4mb8agUkVC8BF7V8NuzeyPNqRksA3hztKQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
@@ -2131,6 +2859,15 @@
         "spdx-expression-parse": "^3.0.0"
       }
     },
+    "node_modules/vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
     "node_modules/vscode-jsonrpc": {
       "version": "8.2.0",
       "resolved": "https://registry.npmjs.org/vscode-jsonrpc/-/vscode-jsonrpc-8.2.0.tgz",
@@ -2195,6 +2932,12 @@
         "defaults": "^1.0.3"
       }
     },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "license": "ISC"
+    },
     "node_modules/zod": {
       "version": "4.0.14",
       "resolved": "https://registry.npmjs.org/zod/-/zod-4.0.14.tgz",
diff --git a/package.json b/package.json
index 9929e11..56f6c1f 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
     "dev": "tsx main.ts"
   },
   "devDependencies": {
+    "@types/express": "^5.0.5",
     "@types/node": "^24.1.0",
     "@types/sql.js": "^1.4.9",
     "@zenstackhq/cli": "next",
@@ -15,6 +16,7 @@
   "dependencies": {
     "@zenstackhq/kysely-sql-js": "next",
     "@zenstackhq/runtime": "next",
+    "express": "^5.1.0",
     "sql.js": "^1.13.0"
   }
 }

From 13c96c4442b0a53eea07d27973230f7b0ffcf928 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 31 Oct 2025 21:55:57 +0000
Subject: [PATCH 3/3] Add input validation and improved error logging

Co-authored-by: ymc9 <104139426+ymc9@users.noreply.github.com>
---
 main.ts | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/main.ts b/main.ts
index 5d93623..e9dc36d 100644
--- a/main.ts
+++ b/main.ts
@@ -27,6 +27,7 @@ async function main() {
       });
       res.json(users);
     } catch (error) {
+      console.error('Error fetching users:', error);
       res.status(500).json({ error: 'Failed to fetch users' });
     }
   });
@@ -39,6 +40,7 @@ async function main() {
       });
       res.json(posts);
     } catch (error) {
+      console.error('Error fetching posts:', error);
       res.status(500).json({ error: 'Failed to fetch posts' });
     }
   });
@@ -46,8 +48,14 @@ async function main() {
   // Get post by id
   app.get('/api/posts/:id', async (req, res) => {
     try {
+      const id = parseInt(req.params.id);
+      if (isNaN(id) || id < 1) {
+        res.status(400).json({ error: 'Invalid post ID' });
+        return;
+      }
+      
       const post = await db.post.findUnique({
-        where: { id: parseInt(req.params.id) },
+        where: { id },
         include: { author: true }
       });
       if (!post) {
@@ -56,6 +64,7 @@ async function main() {
         res.json(post);
       }
     } catch (error) {
+      console.error('Error fetching post:', error);
       res.status(500).json({ error: 'Failed to fetch post' });
     }
   });