[Mirror PR #3241] docs: add TROUBLESHOOTING.md troubleshooting manual

TROUBLESHOOTING.md

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+# TermUI Troubleshooting Guide
+
+Reference index for diagnosing and fixing common local environment build issues.
+
+## 1. Node Module Version Mismatch
+* **Symptom**: Application fails to bundle with explicit missing dependency hooks.
+* **Resolution**: Wipe your active module tree and reinstall packages from scratch:
+  ```bash
+  rm -rf node_modules package-lock.json && npm install
+  ```
+
+## 2. Terminal Resizing Screen Glitches
+* **Symptom**: Interface layout blocks break when running inside small viewport sizes.
+* **Resolution**: Keep your host terminal window scale above a minimum threshold of 80x24 characters.
+
+## 3. Missing Execution Permissions
+* **Symptom**: Local shell scripts fail to run with an access denial alert.
+* **Resolution**: Explicitly grant execution rights via your local command shell:
+  ```bash
+  chmod +x ./scripts/*
+  ```