Replace runtime migrations with standard wrangler deploy flow

The deploy script in package.json now runs wrangler d1 migrations apply
before wrangler deploy. Cloudflare auto-detects this for one-click deploy
and Workers Builds. Removed src/migrate.ts and its tests.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: DennisAlund

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## 0.4.0
+
+- Replaced runtime migration system with Cloudflare's standard `wrangler d1 migrations apply` during deploy
+- The `deploy` script in `package.json` now runs migrations before deploying, which Cloudflare auto-detects for one-click deploy and Workers Builds
+- Migration command references the D1 binding name (`DB`) instead of the database name, so it works regardless of what each user names their database
+- Removed `src/migrate.ts`: no application-level migration code runs at request time
+
 ## 0.3.4
 
 - Automatic database migrations: the Worker applies pending schema changes on cold start, no CLI commands or dashboard configuration needed

README.md

@@ -20,7 +20,7 @@
 
 ### One-click
 
-Click the **Deploy to Cloudflare** button above. It will fork the repo, create a D1 database, and deploy the Worker. Database migrations apply automatically on startup.
+Click the **Deploy to Cloudflare** button above. Cloudflare will fork the repo, provision a D1 database, apply schema migrations, and deploy the Worker. No manual database setup required.
 
 After deploying, set up authentication (see below).
 
@@ -31,10 +31,14 @@ git clone https://github.com/oddbit/shrtnr
 cd shrtnr
 yarn install
 yarn wrangler-login
-yarn db:migrate
-yarn deploy             # auto-provisions the D1 database on first deploy
+yarn db:create
+yarn deploy             # applies migrations and deploys the Worker
 ```
 
+### Continuous deployment
+
+The deploy button sets up [Workers Builds](https://developers.cloudflare.com/workers/ci-cd/builds/) automatically. Cloudflare detects the `deploy` script in `package.json` and uses it as the deploy command. Each push to your production branch applies pending D1 migrations and redeploys the Worker.
+
 ## Authentication
 
 shrtnr uses [Cloudflare Access](https://developers.cloudflare.com/cloudflare-one/applications/) to protect the admin UI. Access handles login, sessions, and identity — the Worker itself has zero auth code.
@@ -106,6 +110,7 @@ Administrative and internal endpoints are intentionally not documented here.
 
 ```bash
 yarn install
+yarn db:migrate         # apply migrations to local D1
 yarn test
 yarn dev
 ```

package.json

@@ -1,15 +1,15 @@
 {
   "name": "shrtnr",
-  "version": "0.3.4",
+  "version": "0.4.0",
   "description": "A free, open-source, self-hosted URL shortener built on Cloudflare Workers + D1",
   "license": "Apache-2.0",
   "scripts": {
     "dev": "wrangler dev",
-    "deploy": "wrangler deploy",
+    "deploy": "npm run db:migrate:remote && wrangler deploy",
     "wrangler-login": "wrangler login",
     "db:create": "wrangler d1 create shrtnr-db",
-    "db:migrate": "wrangler d1 migrations apply shrtnr-db",
-    "db:migrate:local": "wrangler d1 migrations apply shrtnr-db --local",
+    "db:migrate": "wrangler d1 migrations apply shrtnr-db --local",
+    "db:migrate:remote": "wrangler d1 migrations apply DB --remote",
     "secret:put": "wrangler secret put",
     "test": "vitest run",
     "test:watch": "vitest"

src/__tests__/migrate.test.ts

@@ -15,23 +15,15 @@ import { handleDashboardStats, handleLinkAnalytics } from "./api/analytics";
 import { serveAdminUI } from "./admin/ui";
 import { serveAsset } from "./assets";
 import { notFoundResponse } from "./404";
-import { applyMigrations } from "./migrate";
 
 type AuthContext = {
   email: string;
   source: "access" | "apikey";
   scope: string | null; // null = full access (admin), "create" | "read" | "create,read"
 };
 
-let migrated = false;
-
 export default {
   async fetch(request: Request, env: Env, ctx: ExecutionContext): Promise<Response> {
-    if (!migrated) {
-      await applyMigrations(env.DB);
-      migrated = true;
-    }
-
     const url = new URL(request.url);
     const path = url.pathname;