feat: implement address password authentication feature (#731)

* feat: implement address password authentication feature

- Add password field to address table for storing hashed passwords
- Implement address authentication APIs (login, change password)
- Add automatic password generation for new addresses
- Support password login alongside credential login in frontend
- Add password management in account settings and admin panel
- Add ENABLE_ADDRESS_PASSWORD environment variable for feature control
- Update documentation and i18n support
- Enhance security with SHA-256 password hashing

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

Co-Authored-By: Claude <noreply@anthropic.com>

* feat: upgrade dependencies

---------

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

db/schema.sql

@@ -14,6 +14,7 @@ CREATE INDEX IF NOT EXISTS idx_raw_mails_created_at ON raw_mails(created_at);
 CREATE TABLE IF NOT EXISTS address (
     id INTEGER PRIMARY KEY AUTOINCREMENT,
     name TEXT UNIQUE,
+    password TEXT,
     created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
     updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
 );
@@ -55,6 +56,7 @@ CREATE TABLE IF NOT EXISTS sendbox (
 );
 
 CREATE INDEX IF NOT EXISTS idx_sendbox_address ON sendbox(address);
+
 CREATE INDEX IF NOT EXISTS idx_sendbox_created_at ON sendbox(created_at);
 
 CREATE TABLE IF NOT EXISTS settings (