feat: add change email entry

[sunnylqm]

Summary

• 在账户信息的邮箱栏旁添加「修改邮箱」入口
• 点击后打开给支持邮箱的邮件草稿，并预填当前账户邮箱、主题和说明
• 补齐中英文 i18n 文案

Test Plan

• bun run ci
• bun run build

Summary by CodeRabbit

• New Features
  • Added a “change email” option in the account area, opening a prefilled email draft to support.
  • Added localized text for the new email-change flow in English and Simplified Chinese.
• Bug Fixes
  • Updated the support contact link to use a shared email address, keeping account-related email actions consistent.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 2d927977-ee39-43de-8ba0-782d89d1f9d1

📥 Commits

Reviewing files that changed from the base of the PR and between fd87ba4 and 5f3784c.

📒 Files selected for processing (3)

• src/i18n/locales/en.json
• src/i18n/locales/zh-CN.json
• src/pages/user/index.tsx

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📝 Walkthrough

Walkthrough

Adds new i18n strings for a change-email flow in English and Chinese locale files, and updates the user page to centralize a support email constant, build a mailto link with subject/body from i18n templates, and add a button to trigger the email change action.

Changes

Change Email Flow

Layer / File(s)	Summary
Change-email i18n strings src/i18n/locales/en.json, src/i18n/locales/zh-CN.json	Adds user.change_email, user.change_email_subject, and user.change_email_body keys (with {{email}} interpolation) to both locale files.
Support email constant and mailto wiring src/pages/user/index.tsx	Expands Ant Design imports to multi-line, adds a SUPPORT_EMAIL constant used in the invoice hint mailto link, builds a changeEmailHref mailto URL from i18n subject/body templates, and adds a link-style button next to the displayed email that opens the composed change-email link.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• reactnativecn/pushy-admin#45: Both PRs modify the same i18n locale JSON files to extend user-scoped translations.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: adding a change-email entry in the user account UI.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/change-email-entry

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