Complete repository contribution templates

.github/ISSUE_TEMPLATE/bug_report.yml

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+---
+name: Bug report
+description: >-
+  Report a reproducible defect in a PixelTops skill or runtime helper
+title: "[Bug]: "
+labels:
+  - bug
+body:
+  - type: input
+    id: component
+    attributes:
+      label: Affected component
+      description: Name the skill, script, or runtime helper
+    validations:
+      required: true
+  - type: textarea
+    id: summary
+    attributes:
+      label: Summary
+      description: What happened, and what should have happened instead?
+    validations:
+      required: true
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: Reproduction
+      description: >-
+        Provide minimal commands, inputs, and image properties needed to
+        reproduce the defect
+    validations:
+      required: true
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment
+      description: >-
+        Include the OS, Python version, and relevant dependency versions
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yml

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+---
+blank_issues_enabled: false

.github/ISSUE_TEMPLATE/feature_request.yml

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+---
+name: Feature request
+description: >-
+  Suggest a focused improvement to a PixelTops skill or runtime helper
+title: "[Feature]: "
+labels:
+  - enhancement
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem
+      description: What image-editing problem should the repository solve?
+    validations:
+      required: true
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposal
+      description: What should the skill or helper do differently?
+    validations:
+      required: true
+  - type: textarea
+    id: boundaries
+    attributes:
+      label: Change boundaries
+      description: >-
+        Describe the intended selection, mask, output, and preservation
+        requirements
+    validations:
+      required: true

.github/pull_request_template.md

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+## Summary
+
+-
+
+## Validation
+
+- [ ] `python -m pip install --disable-pip-version-check -r requirements-dev.txt`
+- [ ] `python scripts/validate_repository.py --evidence-file .validation-evidence.jsonl`
+
+## Change boundaries
+
+- [ ] Skill guidance, runtime behavior, and validation remain consistent.
+- [ ] Generated validation evidence is not committed.