feat: add daily request limit and refactor access control (#759)

- Add daily request limit per IP in blacklist settings (1-1,000,000/day)
- Refactor access control logic: merge blacklist and rate limit checks
- Remove RATE_LIMIT_API_DAILY_REQUESTS env var, use database config instead
- Move x-custom-auth check earlier in middleware chain
- Add comprehensive English documentation (31 new guide pages)
- Improve code structure and error handling

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Co-authored-by: Claude <noreply@anthropic.com>

vitepress-docs/docs/en/guide/actions/d1.md

@@ -0,0 +1,17 @@
+# Initialize/Update D1 Database
+
+## Create Database
+
+Open the Cloudflare console, select `Workers & Pages` -> `D1` -> `Create Database`, and click to create the database
+
+![d1](/ui_install/d1.png)
+
+After creation, you can see the D1 database in the Cloudflare console and obtain the database `name` and `database ID`
+
+## Initialize Database
+
+After deployment is complete, go to the admin page's `Quick Setup` -> `Database` section and click the `Initialize Database` button to initialize the database
+
+## Update Database Schema
+
+Refer to [Update D1 via Command Line](/en/guide/cli/d1) or [Update D1 via UI](/en/guide/ui/d1)