ci: add issue and PR templates with bilingual support

Add GitHub issue templates (bug report, feature request, documentation
issue, question) and PR template. All templates use bilingual format
(English + Chinese) to support the international community.

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: "Bug Report / Bug 报告"
+description: |
+  Report errors or unexpected behavior.
+  报告错误或异常行为。
+labels:
+  - bug
+body:
+  - type: checkboxes
+    attributes:
+      label: Self Checks / 自检
+      options:
+        - label: |
+            I have read the [FAQ](https://github.com/farion1231/cc-switch#faq) section in README.
+            我已阅读 README 中的[常见问题](https://github.com/farion1231/cc-switch#常见问题)。
+          required: true
+        - label: |
+            I have searched for [existing issues](https://github.com/farion1231/cc-switch/issues), including closed ones.
+            我已搜索过[已有的 Issue](https://github.com/farion1231/cc-switch/issues)，包括已关闭的。
+          required: true
+
+  - type: input
+    attributes:
+      label: CC Switch Version / 版本号
+      description: |
+        See the Settings page in the app.
+        查看应用设置页面中的版本号。
+      placeholder: "e.g. 3.11.1"
+    validations:
+      required: true
+
+  - type: dropdown
+    attributes:
+      label: Operating System / 操作系统
+      multiple: false
+      options:
+        - Windows
+        - macOS
+        - Linux
+    validations:
+      required: true
+
+  - type: dropdown
+    attributes:
+      label: Related App / 涉及应用
+      description: |
+        Which app is affected?
+        涉及哪个应用？
+      multiple: true
+      options:
+        - Claude Code
+        - Codex
+        - Gemini CLI
+        - OpenCode
+        - OpenClaw
+        - Other / 其他
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Steps to Reproduce / 重现步骤
+      description: |
+        Please describe the steps to reproduce the bug. Screenshots and logs are helpful.
+        请描述重现步骤。截图和日志会很有帮助。
+      placeholder: |
+        1. Go to ...
+        2. Click on ...
+        3. See error ...
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Expected Behavior / 期望行为
+      description: |
+        What did you expect to happen?
+        你期望发生什么？
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Actual Behavior / 实际行为
+      description: |
+        What actually happened?
+        实际发生了什么？
+    validations:
+      required: false
+
+  - type: textarea
+    attributes:
+      label: Additional Context / 补充信息
+      description: |
+        Any other information, screenshots, or logs.
+        其他信息、截图或日志。
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,12 @@
+blank_issues_enabled: false
+contact_links:
+  - name: "Security Vulnerabilities / 安全漏洞"
+    url: "https://github.com/farion1231/cc-switch/security/advisories/new"
+    about: |
+      Report security vulnerabilities through GitHub Security Advisories.
+      请通过 GitHub 安全公告报告安全漏洞。
+  - name: "Discussions / 讨论区"
+    url: "https://github.com/farion1231/cc-switch/discussions"
+    about: |
+      General discussions and community help.
+      一般讨论和社区帮助。

.github/ISSUE_TEMPLATE/doc_issue.yml

@@ -0,0 +1,60 @@
+name: "Documentation Issue / 文档问题"
+description: |
+  Report documentation errors, outdated content, or missing information.
+  报告文档错误、过时内容或缺失信息。
+labels:
+  - documentation
+body:
+  - type: checkboxes
+    attributes:
+      label: Self Checks / 自检
+      options:
+        - label: |
+            I have searched for [existing issues](https://github.com/farion1231/cc-switch/issues), including closed ones.
+            我已搜索过[已有的 Issue](https://github.com/farion1231/cc-switch/issues)，包括已关闭的。
+          required: true
+
+  - type: dropdown
+    attributes:
+      label: Language / 语言
+      description: |
+        Which language version of the docs?
+        涉及哪个语言版本的文档？
+      multiple: true
+      options:
+        - English
+        - 中文
+        - 日本語
+    validations:
+      required: true
+
+  - type: input
+    attributes:
+      label: Document Location / 文档位置
+      description: |
+        Which file or section is affected? Provide a link or file path.
+        涉及哪个文件或章节？请提供链接或文件路径。
+      placeholder: "e.g. README.md#faq or docs/user-manual/zh/..."
+    validations:
+      required: true
+
+  - type: dropdown
+    attributes:
+      label: Issue Type / 问题类型
+      options:
+        - "Typo or grammar / 拼写或语法错误"
+        - "Outdated content / 内容过时"
+        - "Missing information / 信息缺失"
+        - "Translation issue / 翻译问题"
+        - "Other / 其他"
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Description / 描述
+      description: |
+        Describe the documentation issue.
+        描述文档问题。
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,75 @@
+name: "Feature Request / 功能请求"
+description: |
+  Propose a new feature or improvement.
+  提出新功能或改进建议。
+labels:
+  - enhancement
+body:
+  - type: checkboxes
+    attributes:
+      label: Self Checks / 自检
+      options:
+        - label: |
+            I have read the [FAQ](https://github.com/farion1231/cc-switch#faq) section in README.
+            我已阅读 README 中的[常见问题](https://github.com/farion1231/cc-switch#常见问题)。
+          required: true
+        - label: |
+            I have searched for [existing issues](https://github.com/farion1231/cc-switch/issues), including closed ones.
+            我已搜索过[已有的 Issue](https://github.com/farion1231/cc-switch/issues)，包括已关闭的。
+          required: true
+
+  - type: dropdown
+    attributes:
+      label: Related App / 涉及应用
+      description: |
+        Which app is this feature for?
+        该功能涉及哪个应用？
+      multiple: true
+      options:
+        - Claude Code
+        - Codex
+        - Gemini CLI
+        - OpenCode
+        - OpenClaw
+        - General / 通用
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Problem or Motivation / 问题或动机
+      description: |
+        Is this request related to a problem? Describe the scenario.
+        这个请求是否与某个问题相关？请描述使用场景。
+      placeholder: |
+        I was trying to ... and found that ...
+        我在尝试……的时候，发现……
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Proposed Solution / 建议方案
+      description: |
+        Describe the solution you'd like.
+        描述你希望的解决方案。
+    validations:
+      required: false
+
+  - type: textarea
+    attributes:
+      label: Additional Context / 补充信息
+      description: |
+        Any other context, mockups, or screenshots.
+        其他背景信息、设计稿或截图。
+    validations:
+      required: false
+
+  - type: checkboxes
+    attributes:
+      label: Contribution / 参与贡献
+      options:
+        - label: |
+            I am interested in contributing to this feature.
+            我有兴趣参与开发此功能。
+          required: false

.github/ISSUE_TEMPLATE/question.yml

@@ -0,0 +1,64 @@
+name: "Question / 提问"
+description: |
+  Ask a question about usage or configuration.
+  询问使用或配置相关问题。
+labels:
+  - question
+body:
+  - type: checkboxes
+    attributes:
+      label: Self Checks / 自检
+      options:
+        - label: |
+            I have read the [FAQ](https://github.com/farion1231/cc-switch#faq) section in README.
+            我已阅读 README 中的[常见问题](https://github.com/farion1231/cc-switch#常见问题)。
+          required: true
+        - label: |
+            I have searched for [existing issues](https://github.com/farion1231/cc-switch/issues), including closed ones.
+            我已搜索过[已有的 Issue](https://github.com/farion1231/cc-switch/issues)，包括已关闭的。
+          required: true
+
+  - type: dropdown
+    attributes:
+      label: Related App / 涉及应用
+      description: |
+        Which app is your question about?
+        你的问题涉及哪个应用？
+      multiple: true
+      options:
+        - Claude Code
+        - Codex
+        - Gemini CLI
+        - OpenCode
+        - OpenClaw
+        - General / 通用
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Your Question / 你的问题
+      description: |
+        Describe your question clearly.
+        请清晰地描述你的问题。
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: What Have You Tried / 你已经尝试过什么
+      description: |
+        Describe what you've already tried or researched.
+        描述你已经尝试过或查阅过的内容。
+    validations:
+      required: false
+
+  - type: textarea
+    attributes:
+      label: Environment / 环境信息
+      description: |
+        OS, CC Switch version, and any relevant details.
+        操作系统、CC Switch 版本及其他相关信息。
+      placeholder: "e.g. macOS 15.4, CC Switch 3.11.1"
+    validations:
+      required: false

.github/pull_request_template.md

@@ -0,0 +1,25 @@
+## Summary / 概述
+
+<!-- Briefly describe what this PR does and why. / 简要描述这个 PR 做了什么以及为什么。 -->
+
+## Related Issue / 关联 Issue
+
+<!-- Link the related issue. Use "Fixes #123" to auto-close it when merged. -->
+<!-- 关联相关 Issue。使用 "Fixes #123" 可在合并时自动关闭。 -->
+
+Fixes #
+
+## Screenshots / 截图
+
+<!-- If applicable, add before/after screenshots. / 如有需要，请添加修改前后的截图。 -->
+
+| Before / 修改前 | After / 修改后 |
+|-----------------|---------------|
+|                 |               |
+
+## Checklist / 检查清单
+
+- [ ] `pnpm typecheck` passes / 通过 TypeScript 类型检查
+- [ ] `pnpm format:check` passes / 通过代码格式检查
+- [ ] `cargo clippy` passes (if Rust code changed) / 通过 Clippy 检查（如修改了 Rust 代码）
+- [ ] Updated i18n files if user-facing text changed / 如修改了用户可见文本，已更新国际化文件