chore: import upstream snapshot with attribution

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+## 🔴 Required Information
+*Please ensure all items in this section are completed to allow for efficient
+triaging. Requests without complete information may be rejected / deprioritized.
+If an item is not applicable to you - please mark it as N/A*
+
+**Describe the Bug:**
+A clear and concise description of what the bug is.
+
+**Steps to Reproduce:**
+Please provide a numbered list of steps to reproduce the behavior:
+1. Install '...'
+2. Run '....'
+3. Open '....'
+4. Provide error or stacktrace
+
+**Expected Behavior:**
+A clear and concise description of what you expected to happen.
+
+**Observed Behavior:**
+What actually happened? Include error messages or crash stack traces here.
+
+**Environment Details:**
+
+ - ADK Library Version (pip show google-adk):
+ - Desktop OS:** [e.g., macOS, Linux, Windows]
+ - Python Version (python -V):
+
+**Model Information:**
+
+ - Are you using LiteLLM: Yes/No
+ - Which model is being used: (e.g., gemini-2.5-pro)
+
+---
+
+## 🟡 Optional Information
+*Providing this information greatly speeds up the resolution process.*
+
+**Regression:**
+Did this work in a previous version of ADK? If so, which one?
+
+**Logs:**
+Please attach relevant logs. Wrap them in code blocks (```) or attach a
+text file.
+```text
+// Paste logs here
+```
+
+**Screenshots / Video:**
+If applicable, add screenshots or screen recordings to help explain
+your problem.
+
+**Additional Context:**
+Add any other context about the problem here.
+
+**Minimal Reproduction Code:**
+Please provide a code snippet or a link to a Gist/repo that isolates the issue.
+```python
+// Code snippet here
+```
+
+**How often has this issue occurred?:**
+
+ - Always (100%)
+ - Often (50%+)
+ - Intermittently (<50%)
+ - Once / Rare

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+** Please make sure you read the contribution guide and file the issues in the right place. **
+[Contribution guide.](https://google.github.io/adk-docs/contributing-guide/)
+
+## 🔴 Required Information
+*Please ensure all items in this section are completed to allow for efficient
+triaging. Requests without complete information may be rejected / deprioritized.
+If an item is not applicable to you - please mark it as N/A*
+
+### Is your feature request related to a specific problem?
+Please describe the problem you are trying to solve. (Ex: "I'm always frustrated
+when I have to manually handle X...")
+
+### Describe the Solution You'd Like
+A clear and concise description of the feature or API change you want.
+Be specific about input/outputs if this involves an API change.
+
+### Impact on your work
+How does this feature impact your work and what are you trying to achieve?
+If this is critical for you, tell us if there is a timeline by when you need
+this feature.
+
+### Willingness to contribute
+Are you interested in implementing this feature yourself or submitting a PR?
+(Yes/No)
+
+---
+
+## 🟡 Recommended Information
+
+### Describe Alternatives You've Considered
+A clear and concise description of any alternative solutions or workarounds
+you've considered and why they didn't work for you.
+
+### Proposed API / Implementation
+If you have ideas on how this should look in code, please share a
+pseudo-code example.
+
+### Additional Context
+Add any other context or screenshots about the feature request here.