docs: add support question issue template

.github/ISSUE_TEMPLATE/support_question.md

@@ -0,0 +1,40 @@
+---
+name: Support question
+about: Ask for help with using First Tree or its documentation.
+title: "[Question] "
+labels: question
+assignees: ""
+---
+
+Before posting, review [SUPPORT.md](https://github.com/agent-team-foundation/first-tree/blob/main/SUPPORT.md). Do not disclose suspected vulnerabilities here; follow [SECURITY.md](https://github.com/agent-team-foundation/first-tree/blob/main/SECURITY.md) instead.
+
+## Affected Surface
+
+- CLI
+- web
+- server
+- docs
+- GitHub integration
+- other
+
+## Version and Installation
+
+- version or commit:
+- install method or source checkout:
+- operating system or browser, if relevant:
+
+## Command, Screen, or Workflow
+
+Provide the exact command, screen, or workflow involved.
+
+## Expected Behavior
+
+What did you expect to happen?
+
+## What I Tried
+
+What have you already tried, and what happened?
+
+## Additional Context
+
+Add non-sensitive logs, screenshots, or related links.