[Fix #383] issue templates (#465)

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Report a reproducible bug or regression
+title: "[Bug]: "
+labels: ["bug"]
+assignees: []
+---
+
+## Summary
+
+Describe the bug clearly and concisely.
+
+## Steps to reproduce
+
+1. Go to ...
+2. Click on ...
+3. Observe ...
+
+## Expected behavior
+
+Describe what you expected to happen.
+
+## Actual behavior
+
+Describe what actually happened.
+
+## Environment
+
+- App version:
+- OS/device:
+- Additional context:

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea or enhancement
+title: "[Feature]: "
+labels: ["enhancement"]
+assignees: []
+---
+
+## Problem
+
+Describe the problem or pain point this request addresses.
+
+## Proposed solution
+
+Describe the desired behavior or feature.
+
+## Alternatives considered
+
+Describe any alternative solutions or features you considered.
+
+## Additional context
+
+Add any extra context, mockups, or examples here.

.github/ISSUE_TEMPLATE/other.md

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+---
+name: Other
+about: Ask a question or open another type of issue
+title: "[Other]: "
+labels: ["question"]
+assignees: []
+---
+
+## Context
+
+Describe what this issue is about.
+
+## Details
+
+Share any relevant details, links, logs, or screenshots.
+
+## Outcome
+
+Describe what kind of answer, clarification, or next step you are looking for.