fix: auto-reply not triggering when source_prefix is empty (#880)

* fix: auto-reply not triggering when source_prefix is empty (#459)

- Empty source_prefix now matches all senders (was short-circuiting as falsy)
- Support regex matching with /pattern/ syntax in source_prefix
- Backward compatible: plain strings still use startsWith
- Use E2E_TEST_MODE switch to skip cloudflare:email import in tests
- Track reply() calls in E2E mock for testability

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: update auto-reply UI labels for regex support

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: update changelogs for auto-reply fix and regex feature

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: upgrade version to v1.5.0

- Update version number to 1.5.0 in all package.json files and constants.ts
- Split CHANGELOG: v1.4.0 entries finalized, new v1.5.0(main) section with auto-reply changes

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: add error logging for invalid regex in auto-reply source_prefix

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* refactor: address CodeRabbit review suggestions

- Use const object instead of let for mock state tracking
- Add log when auto-reply subject/message falls back to defaults

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: add source_prefix regex syntax to auto-reply docs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

vitepress-docs/docs/en/guide/worker-vars.md

@@ -33,7 +33,7 @@
 | `DEFAULT_DOMAINS`                     | JSON      | Default domains available to users (not logged in or users without assigned roles)                                                                                                                                | `["awsl.uk", "dreamhunter2333.xyz"]`      |
 | `CREATE_ADDRESS_DEFAULT_DOMAIN_FIRST` | Text/JSON | Whether to prioritize default domain when creating new addresses, if set to true, will use the first domain when no domain is specified, mainly for telegram bot scenarios                                        | `false`                                   |
 | `DOMAIN_LABELS`                       | JSON      | For Chinese domains, you can use DOMAIN_LABELS to display Chinese names                                                                                                                                           | `["中文.awsl.uk", "dreamhunter2333.xyz"]` |
-| `ENABLE_AUTO_REPLY`                   | Text/JSON | Allow automatic email replies                                                                                                                                                                                     | `true`                                    |
+| `ENABLE_AUTO_REPLY`                   | Text/JSON | Allow automatic email replies. Sender filter (`source_prefix`) supports three modes: empty to match all senders, prefix for `startsWith` matching, or `/regex/` syntax for regex matching (e.g. `/@example\.com$/`) | `true`                                    |
 | `DEFAULT_SEND_BALANCE`                | Text/JSON | Default email sending balance, will be 0 if not set                                                                                                                                                               | `1`                                       |
 | `ENABLE_ADDRESS_PASSWORD`             | Text/JSON | Enable address password feature, when enabled, passwords will be auto-generated for new addresses, supports password login and modification                                                                       | `true`                                    |
 

vitepress-docs/docs/zh/guide/worker-vars.md

@@ -33,7 +33,7 @@
 | `DEFAULT_DOMAINS`                     | JSON      | 默认用户可用的域名(未登录或未分配角色的用户)                                                                                      | `["awsl.uk", "dreamhunter2333.xyz"]`      |
 | `CREATE_ADDRESS_DEFAULT_DOMAIN_FIRST` | 文本/JSON | 创建新地址时是否优先使用默认域名，如果设置为 true，当未指定域名时将使用第一个域名, 主要用于 telegram bot 场景                     | `false`                                   |
 | `DOMAIN_LABELS`                       | JSON      | 对于中文域名，可以使用 DOMAIN_LABELS 显示域名的中文展示名称                                                                       | `["中文.awsl.uk", "dreamhunter2333.xyz"]` |
-| `ENABLE_AUTO_REPLY`                   | 文本/JSON | 允许自动回复邮件                                                                                                                  | `true`                                    |
+| `ENABLE_AUTO_REPLY`                   | 文本/JSON | 允许自动回复邮件。发件人过滤（`source_prefix`）支持三种模式：留空匹配所有发件人、填写前缀进行 `startsWith` 匹配、使用 `/regex/` 语法进行正则匹配（如 `/@example\.com$/`） | `true`                                    |
 | `DEFAULT_SEND_BALANCE`                | 文本/JSON | 默认发送邮件余额，如果不设置，将为 0                                                                                              | `1`                                       |
 | `ENABLE_ADDRESS_PASSWORD`             | 文本/JSON | 启用邮箱地址密码功能，启用后创建新地址时会自动生成密码，并支持密码登录和修改                                                      | `true`                                    |
 

vitepress-docs/package.json

@@ -1,7 +1,7 @@
 {
   "name": "temp-mail-docs",
   "private": true,
-  "version": "1.4.0",
+  "version": "1.5.0",
   "type": "module",
   "devDependencies": {
     "@types/node": "^25.3.3",