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

🤖 Generated with [Claude Code](https://claude.ai/code)

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

vitepress-docs/docs/en/guide/feature/new-address-api.md

@@ -0,0 +1,92 @@
+# Create New Email Address API
+
+## Create Email Address via Admin API
+
+This is a `python` example using the `requests` library to send emails.
+
+```python
+res = requests.post(
+    # Replace xxxx.xxxx with your worker domain
+    "https://xxxx.xxxx/admin/new_address",
+    json={
+        # Enable prefix (True/False)
+        "enablePrefix": True,
+        "name": "<email_name>",
+        "domain": "<email_domain>",
+    },
+    headers={
+        'x-admin-auth': "<your_website_admin_password>",
+        "Content-Type": "application/json"
+    }
+)
+
+# Returns {"jwt": "<Jwt>"}
+print(res.json())
+```
+
+## Batch Create Random Username Email Addresses API Example
+
+### Batch Create Email Addresses via Admin API
+
+This is a `python` example using the `requests` library to send emails.
+
+```python
+import requests
+import random
+import string
+from concurrent.futures import ThreadPoolExecutor, as_completed
+
+
+def generate_random_name():
+    # Generate 5 lowercase letters
+    letters1 = ''.join(random.choices(string.ascii_lowercase, k=5))
+    # Generate 1-3 digits
+    numbers = ''.join(random.choices(string.digits, k=random.randint(1, 3)))
+    # Generate 1-3 lowercase letters
+    letters2 = ''.join(random.choices(string.ascii_lowercase, k=random.randint(1, 3)))
+    # Combine into final name
+    return letters1 + numbers + letters2
+
+
+def fetch_email_data(name):
+    try:
+        res = requests.post(
+            "https://<worker_domain>/admin/new_address",
+            json={
+                "enablePrefix": True,
+                "name": name,
+                "domain": "<email_domain>",
+            },
+            headers={
+                'x-admin-auth': "<your_website_admin_password>",
+                "Content-Type": "application/json"
+            }
+        )
+
+        if res.status_code == 200:
+            response_data = res.json()
+            email = response_data.get("address", "no address")
+            jwt = response_data.get("jwt", "no jwt")
+            return f"{email}----{jwt}\n"
+        else:
+            print(f"Request failed, status code: {res.status_code}")
+            return None
+    except requests.RequestException as e:
+        print(f"Request error: {e}")
+        return None
+
+
+def generate_and_save_emails(num_emails):
+    with ThreadPoolExecutor(max_workers=30) as executor, open('email.txt', 'a') as file:
+        futures = [executor.submit(fetch_email_data, generate_random_name()) for _ in range(num_emails)]
+
+        for future in as_completed(futures):
+            result = future.result()
+            if result:
+                file.write(result)
+
+
+# Generate 10 emails and append to existing file
+generate_and_save_emails(10)
+
+```