Add GitHub issue and PR templates and update SECURITY

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,127 @@
+name: 🐛 Bug Report
+description: Report a bug or unexpected behavior in BitSleuth Wallet
+title: "[Bug]: "
+labels: ["bug", "needs-triage"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to report a bug! Please fill out the form below to help us investigate and fix the issue.
+
+        **Before submitting:**
+        - Search for existing issues to avoid duplicates
+        - Make sure you're using the latest version of the app
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Bug Description
+      description: A clear and concise description of what the bug is.
+      placeholder: Describe the bug...
+    validations:
+      required: true
+
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to Reproduce
+      description: Detailed steps to reproduce the behavior
+      placeholder: |
+        1. Go to '...'
+        2. Tap on '...'
+        3. Scroll down to '...'
+        4. See error
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behavior
+      description: What did you expect to happen?
+      placeholder: Describe what you expected...
+    validations:
+      required: true
+
+  - type: textarea
+    id: actual
+    attributes:
+      label: Actual Behavior
+      description: What actually happened?
+      placeholder: Describe what actually happened...
+    validations:
+      required: true
+
+  - type: dropdown
+    id: platform
+    attributes:
+      label: Platform
+      description: Which platform are you experiencing this issue on?
+      options:
+        - iOS
+        - Android
+        - Both iOS and Android
+    validations:
+      required: true
+
+  - type: input
+    id: app-version
+    attributes:
+      label: App Version
+      description: Which version of BitSleuth Wallet are you using?
+      placeholder: e.g., 1.2.1
+    validations:
+      required: true
+
+  - type: input
+    id: os-version
+    attributes:
+      label: OS Version
+      description: What OS version are you running?
+      placeholder: e.g., iOS 18.2, Android 14
+    validations:
+      required: true
+
+  - type: input
+    id: device
+    attributes:
+      label: Device
+      description: What device are you using?
+      placeholder: e.g., iPhone 15 Pro, Samsung Galaxy S24
+    validations:
+      required: true
+
+  - type: textarea
+    id: screenshots
+    attributes:
+      label: Screenshots / Screen Recording
+      description: If applicable, add screenshots or screen recordings to help explain the problem. You can drag and drop images here.
+      placeholder: Drag and drop images or paste URLs here...
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Error Logs
+      description: If you have any error messages or crash logs, paste them here.
+      placeholder: Paste error logs here...
+      render: shell
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional Context
+      description: Add any other context about the problem here (wallet type, network conditions, etc.)
+      placeholder: Any additional information...
+
+  - type: checkboxes
+    id: terms
+    attributes:
+      label: Checklist
+      description: Please confirm the following
+      options:
+        - label: I have searched for existing issues before creating this one
+          required: true
+        - label: I am using the latest version of BitSleuth Wallet
+          required: true
+        - label: This is not a security vulnerability (those should be reported privately via our Security Policy)
+          required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: 💬 Community Discussions
+    url: https://github.com/BitSleuthAI/Wallet/discussions
+    about: Ask questions, share ideas, and connect with the community
+  - name: 🔒 Security Vulnerability
+    url: https://github.com/BitSleuthAI/Wallet/security/advisories/new
+    about: Report a security vulnerability privately (DO NOT create a public issue)

.github/ISSUE_TEMPLATE/documentation.yml

@@ -0,0 +1,60 @@
+name: 📚 Documentation Issue
+description: Report an issue with documentation or suggest improvements
+title: "[Docs]: "
+labels: ["documentation", "needs-triage"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for helping improve our documentation! Please fill out the form below.
+
+  - type: dropdown
+    id: doc-type
+    attributes:
+      label: Documentation Type
+      description: What type of documentation issue is this?
+      options:
+        - README.md
+        - CONTRIBUTING.md
+        - Code comments
+        - API documentation
+        - Setup/Installation guide
+        - User guide
+        - Other
+    validations:
+      required: true
+
+  - type: input
+    id: location
+    attributes:
+      label: Location
+      description: Where is the documentation issue located?
+      placeholder: e.g., README.md line 50, services/wallet-service.ts
+    validations:
+      required: true
+
+  - type: textarea
+    id: issue
+    attributes:
+      label: Issue Description
+      description: What's wrong with the current documentation?
+      placeholder: The documentation is unclear/missing/incorrect because...
+    validations:
+      required: true
+
+  - type: textarea
+    id: suggestion
+    attributes:
+      label: Suggested Improvement
+      description: How should the documentation be improved?
+      placeholder: It would be better if...
+    validations:
+      required: true
+
+  - type: checkboxes
+    id: terms
+    attributes:
+      label: Checklist
+      options:
+        - label: I have checked that this documentation issue hasn't been reported before
+          required: true

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,106 @@
+name: 💡 Feature Request
+description: Suggest a new feature or enhancement for BitSleuth Wallet
+title: "[Feature]: "
+labels: ["enhancement", "needs-triage"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for suggesting a new feature! Please fill out the form below to help us understand your idea.
+
+        **Before submitting:**
+        - Search for existing feature requests to avoid duplicates
+        - Consider discussing your idea in [Discussions](https://github.com/BitSleuthAI/Wallet/discussions) first
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem Statement
+      description: Is your feature request related to a problem? Please describe the problem you're trying to solve.
+      placeholder: I'm frustrated when... / It would be helpful if...
+    validations:
+      required: true
+
+  - type: textarea
+    id: solution
+    attributes:
+      label: Proposed Solution
+      description: Describe the solution you'd like to see implemented.
+      placeholder: I would like to see...
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives Considered
+      description: Have you considered any alternative solutions or workarounds?
+      placeholder: I've also thought about...
+
+  - type: dropdown
+    id: platform
+    attributes:
+      label: Platform
+      description: Which platform(s) should this feature be available on?
+      options:
+        - iOS
+        - Android
+        - Both iOS and Android
+        - Web (future)
+    validations:
+      required: true
+
+  - type: dropdown
+    id: priority
+    attributes:
+      label: Priority
+      description: How important is this feature to you?
+      options:
+        - Nice to have
+        - Important
+        - Critical
+    validations:
+      required: true
+
+  - type: textarea
+    id: use-case
+    attributes:
+      label: Use Case
+      description: Describe your use case. When and how would you use this feature?
+      placeholder: I would use this feature when...
+    validations:
+      required: true
+
+  - type: textarea
+    id: benefits
+    attributes:
+      label: Benefits
+      description: Who would benefit from this feature? How would it improve the app?
+      placeholder: This would help users to...
+
+  - type: textarea
+    id: mockups
+    attributes:
+      label: Mockups / Examples
+      description: If applicable, add mockups, screenshots from other apps, or links to similar implementations.
+      placeholder: Drag and drop images or paste URLs here...
+
+  - type: textarea
+    id: technical
+    attributes:
+      label: Technical Considerations
+      description: Are there any technical considerations or constraints we should be aware of? (Optional)
+      placeholder: This might require...
+
+  - type: checkboxes
+    id: terms
+    attributes:
+      label: Checklist
+      description: Please confirm the following
+      options:
+        - label: I have searched for existing feature requests before creating this one
+          required: true
+        - label: This feature aligns with the project's goals (self-custody, privacy, security)
+          required: true
+        - label: I would be willing to help implement or test this feature
+          required: false