Updated GitHub issue templates.

Thanks to xet7 !

.github/ISSUE_TEMPLATE/bug_report.md

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+name: 🐛 Bug Report
+description: Report a bug to help improve Wekan
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for reporting a bug! Please ensure you are using the [latest version of WeKan](https://wekan.fi/install) and [Upgrade](https://wekan.fi/upgrade) before submitting.
+  - type: textarea
+    id: description
+    attributes:
+      label: Bug Description
+      description: A clear and concise description of what the bug is. Mention versions of WeKan, Node.js, database name and version, frontend webserver version like Caddy etc.
+    validations:
+      required: true
+  - type: dropdown
+    id: platform
+    attributes:
+      label: Platform / Installation Method
+      options:
+        - Snap Stable
+        - Snap Candidate
+        - Docker
+        - Sandstorm
+        - Source (Meteor)
+        - Windows
+        - Mac
+        - Other
+    validations:
+      required: true
+  - type: dropdown 
+    id: CPU
+    attributes:    
+      label: CPU
+      options:
+        - amd64
+        - arm64
+        - s390x
+        - Other
+    validations:
+      required: true
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: Steps to Reproduce
+      description: How can we recreate this issue?
+      placeholder: |
+        1. Go to '...'
+        2. Click on '....'
+        3. Scroll down to '....'
+        4. See error
+    validations:
+      required: true
+  - type: textarea
+    id: logs
+    attributes:
+      label: Relevant Logs
+      description: | 
+        - Please paste any relevant anonymized server logs or browser console errors here.
+        - Snap: sudo snap logs wekan.wekan
+        - Docker: sudo docker logs wekan-app
+        - If logs are very long, attach them in .zip file
+      render: shell
+  - type: textarea
+    id: context
+    attributes: 
+      label: Additional Context
+      description: Add any other context, anonymized screenshots or GIF video about the bug, and screenshot mockups about how it should work.
+

.github/ISSUE_TEMPLATE/feature_request.md

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+name: ✨ Feature Request
+description: Suggest a new feature for Wekan
+labels: ["Feature:Request"]
+body:
+  - type: textarea
+    id: feature-description
+    attributes:
+      label: Problem Statement
+      description: Is your feature request related to a problem? Please describe.
+      placeholder: I'm always frustrated when [...]
+    validations:
+      required: true
+  - type: textarea
+    id: solution
+    attributes:
+      label: Proposed Solution
+      description: A clear and concise description of what you want to happen.
+    validations:
+      required: true
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered
+      description: Any alternative solutions or features you've considered.
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional Context
+      description: Add any other context, like anonymized screenshot mockups about how it should work.
+    
+    

.github/ISSUE_TEMPLATE/security-report.md

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+name: 🛡️ Security Issue
+description: Report a security vulnerability
+labels: ["security", "critical"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## ⚠️ IMPORTANT: Please do not report security vulnerabilities via public issues.
+        
+        To protect the Wekan community, we ask that you report security bugs privately. This allows us to fix the issue before it can be exploited by malicious actors.
+        
+        ### How to report:
+        Please read our **[Security Policy (SECURITY.md)](https://github.com/wekan/wekan/blob/main/SECURITY.md)** for the official reporting process and contact information.
+

.github/ISSUE_TEMPLATE/ucs-issue.md

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+name: 🗳️ Univention (UCS) Issue
+description: Problems specifically related to the Wekan app on Univention Corporate Server
+labels: ["UCS"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## 🛑 Is this a UCS-specific issue?
+        
+        If your issue is related to the **Univention Corporate Server (UCS) integration**, packaging, or installation via the Univention App Center, it should be reported in the dedicated Univention repository.
+        
+        ### ➡️ [Report UCS Issues Here](https://github.com/wekan/univention/issues)
+        
+        ---
+        **Why?**
+        Reporting there ensures that the maintainers specifically focused on the UCS environment see your request. 
+        
+        If you are certain this is a **core Wekan bug** that affects all platforms (Docker, Snap, etc.), please go back and use the standard [Bug Report](https://github.com/wekan/wekan/issues/new?template=bug-report.yml) template.
+  - type: textarea
+    id: ucs-details
+    attributes:
+      label: Brief Description (Optional)
+      description: If you still wish to post here, please provide a brief summary of why this is a core Wekan issue and not a UCS-specific integration bug.