Add community contribution templates

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug report
+description: Report a reproducible layout, rendering, or workflow bug.
+title: "bug: "
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for reporting a bug. Screenshots and the generated HTML are the fastest way to make this actionable.
+  - type: textarea
+    id: summary
+    attributes:
+      label: What happened?
+      description: Describe the issue clearly.
+      placeholder: "The footer overlaps the final card on slide 6..."
+    validations:
+      required: true
+  - type: textarea
+    id: expected
+    attributes:
+      label: What did you expect?
+      placeholder: "The content should stay above the footer."
+    validations:
+      required: true
+  - type: textarea
+    id: reproduce
+    attributes:
+      label: How can we reproduce it?
+      description: Include the prompt, source document, generated deck, or a minimal example.
+      placeholder: |
+        1. Use this prompt...
+        2. Generate a Swiss style deck...
+        3. Open slide 6...
+    validations:
+      required: true
+  - type: textarea
+    id: screenshots
+    attributes:
+      label: Screenshots or files
+      description: Drag screenshots or attach the generated index.html if possible.
+  - type: input
+    id: environment
+    attributes:
+      label: Environment
+      placeholder: "Claude Code / Codex / Cursor, macOS 15, Chrome 125..."
+  - type: dropdown
+    id: theme
+    attributes:
+      label: Theme
+      options:
+        - Style A · Editorial magazine
+        - Style B · Swiss international
+        - Both / unsure
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: true
+contact_links:
+  - name: Read the README
+    url: https://github.com/op7418/guizang-ppt-skill#readme
+    about: Start here for installation and usage.
+  - name: English README
+    url: https://github.com/op7418/guizang-ppt-skill/blob/main/README.en.md
+    about: English installation and usage notes.

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature request
+description: Suggest a new layout, workflow, platform, or capability.
+title: "feat: "
+labels: ["enhancement"]
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: What problem would this solve?
+      description: Please describe the real deck-making situation behind the request.
+      placeholder: "When making product benchmark decks, I often need..."
+    validations:
+      required: true
+  - type: textarea
+    id: proposal
+    attributes:
+      label: What do you want the Skill to do?
+      placeholder: "Add a layout for..."
+    validations:
+      required: true
+  - type: textarea
+    id: examples
+    attributes:
+      label: Examples or references
+      description: Screenshots, links, rough sketches, or deck examples are welcome.
+  - type: dropdown
+    id: area
+    attributes:
+      label: Area
+      options:
+        - Layout / template
+        - Image generation workflow
+        - Data visualization
+        - Installation / packaging
+        - Documentation
+        - Runtime interaction
+        - Other
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/question.yml

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+name: Question
+description: Ask about installation, usage, templates, or generated examples.
+title: "question: "
+labels: ["question"]
+body:
+  - type: textarea
+    id: question
+    attributes:
+      label: Question
+      placeholder: "How should I..."
+    validations:
+      required: true
+  - type: textarea
+    id: context
+    attributes:
+      label: Context
+      description: What have you tried? Which agent and theme are you using?

.github/pull_request_template.md

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+## Summary
+
+- 
+
+## What Changed
+
+- 
+
+## Visual QA
+
+Please attach screenshots for visual changes.
+
+- [ ] Checked at least one dense text slide
+- [ ] Checked at least one image slide
+- [ ] Checked navigation / ESC overview / low-power mode when relevant
+
+## Validation
+
+- [ ] `node scripts/validate-swiss-deck.mjs path/to/index.html`
+- [ ] Manual browser review
+
+## Notes
+
+Any tradeoffs, limitations, or follow-up work: