feat: add issue templates for bug reports, documentation updates, feature requests, and questions

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug report
+description: Report a reproducible problem in Metapi
+title: "[Bug]: "
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for reporting a bug. Please include enough detail for someone else to reproduce it.
+
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Before submitting
+      options:
+        - label: I searched existing issues to avoid creating a duplicate
+          required: true
+        - label: I tested on the latest release or current main branch
+          required: true
+
+  - type: dropdown
+    id: deployment
+    attributes:
+      label: Deployment type
+      description: Where did you reproduce the problem?
+      options:
+        - Web app
+        - Desktop app
+        - Server only
+        - Docker deployment
+        - Other
+    validations:
+      required: true
+
+  - type: textarea
+    id: summary
+    attributes:
+      label: What happened?
+      description: Describe the bug clearly and concisely.
+      placeholder: Describe the problem you observed.
+    validations:
+      required: true
+
+  - type: textarea
+    id: reproduce
+    attributes:
+      label: Steps to reproduce
+      placeholder: |
+        1. Go to ...
+        2. Configure ...
+        3. Send request ...
+        4. Observe ...
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected behavior
+      placeholder: Describe what you expected to happen.
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Logs, screenshots, or error output
+      description: Paste logs or attach screenshots if available.
+      render: shell
+
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment
+      description: Include OS, browser, app version, database type, or other relevant details.
+      placeholder: |
+        OS:
+        Browser:
+        Metapi version:
+        Database:

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Metapi README
+    url: https://github.com/cita-777/metapi#readme
+    about: Start with the README for setup, usage, and deployment details.

.github/ISSUE_TEMPLATE/docs.yml

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+name: Documentation update
+description: Report missing, incorrect, or unclear documentation
+title: "[Docs]: "
+labels: ["docs"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Use this template when documentation is missing, incorrect, or hard to follow.
+
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Before submitting
+      options:
+        - label: I searched existing issues to avoid creating a duplicate
+          required: true
+
+  - type: input
+    id: location
+    attributes:
+      label: Documentation location
+      description: Link the page or file that needs attention.
+      placeholder: e.g. README.md or docs/getting-started.md
+    validations:
+      required: true
+
+  - type: textarea
+    id: issue
+    attributes:
+      label: What is wrong or missing?
+      placeholder: Describe the missing, inaccurate, or confusing part.
+    validations:
+      required: true
+
+  - type: textarea
+    id: fix
+    attributes:
+      label: Suggested improvement
+      placeholder: Describe how the documentation could be improved.

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature request
+description: Suggest a new capability or improvement
+title: "[Feature]: "
+labels: ["enhancement"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for the suggestion. Keep this issue focused on one feature request.
+
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Before submitting
+      options:
+        - label: I searched existing issues to avoid creating a duplicate
+          required: true
+        - label: I confirmed this feature is not already available in the latest release or main branch
+          required: true
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem or use case
+      description: What problem are you trying to solve?
+      placeholder: Explain the workflow or pain point behind this request.
+    validations:
+      required: true
+
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposed solution
+      description: Describe the change you want to see.
+      placeholder: Explain the feature or behavior you want added.
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives considered
+      description: Describe any workaround or alternative you considered.
+
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional context
+      description: Add screenshots, examples, or links if they help explain the request.

.github/ISSUE_TEMPLATE/question.yml

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+name: Question
+description: Ask for clarification or usage guidance
+title: "[Question]: "
+labels: ["question"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Use this template for support or clarification questions that are not bug reports or feature requests.
+
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Before submitting
+      options:
+        - label: I searched existing issues and the README for an answer
+          required: true
+
+  - type: textarea
+    id: question
+    attributes:
+      label: Question
+      description: What do you need help understanding?
+      placeholder: Ask one clear question and include the relevant context.
+    validations:
+      required: true
+
+  - type: textarea
+    id: tried
+    attributes:
+      label: What have you tried?
+      description: Include commands, config, or investigation you already attempted.
+
+  - type: textarea
+    id: environment
+    attributes:
+      label: Relevant environment or config
+      description: Paste config snippets, request examples, or environment details if needed.
+      render: shell