feat: add issue templates (#110)

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+## Describe the bug
+
+Provide a clear and concise description of the issue.
+
+---
+
+### Steps to reproduce
+
+1. 
+2. 
+3. 
+
+---
+
+### Expected **behaviour**
+
+Describe what you expected to happen.
+
+---
+
+### Actual **behaviour**
+
+Describe what actually happened.
+
+---
+
+**Pre-submission checklist (required):**
+
+- [ ]  I have searched the existing open issues and confirmed this bug has not already been reported.
+- [ ]  I am running the latest released version of `shannon`.
+
+**If applicable:**
+
+- [ ]  I have included relevant error messages, stack traces, or failure details.
+- [ ]  I have checked the audit logs and pasted the relevant errors.
+- [ ]  I have inspected the failed Temporal workflow run and included the failure reason.
+- [ ]  I have included clear steps to reproduce the issue.
+- [ ]  I have redacted any sensitive information (tokens, URLs, repo names).
+
+**Debugging checklist (required):**
+
+Please include any **error messages, stack traces, or failure details** you find from the steps below.
+
+Issues without this information may be difficult to triage.
+
+- Check the audit logs at:`./audit-logs/target_url_shannon-123/workflow.log`
+Use `grep` or search to identify errors.
+Paste the relevant error output below.
+- Temporal:
+    - Open the Temporal UI:http://localhost:8233/namespaces/default/workflows
+    - Navigate to failed workflow runs
+    - Open the failed workflow run
+    - In Event History, click on the failed event
+    Copy the error message or failure reason here.
+
+---
+
+### Screenshots
+
+If applicable, add screenshots of the audit logs or Temporal failure details.
+
+---
+
+### CLI details
+
+Provide the following information (redact sensitive data such as repository names, URLs, and tokens):
+
+- Authentication method used:
+    - `CLAUDE_CODE_OAUTH_TOKEN`
+    - `ANTHROPIC_API_KEY`
+- Full `./shannon` command with all flags used (with redactions)
+- Are you using any experimental models or providers other than default Anthropic models?
+    - Yes/No
+    - If Yes which one (model/provider)
+
+---
+
+### Desktop / Environment
+
+Please complete the following information:
+
+- OS (with version):
+e.g. macOS 26.2
+- Docker version (‘docker -v’):
+Example: 25.0.3
+
+---
+
+### Additional context
+
+Add any other context that may help us analyze the root cause.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.