docs: add testing sandbox section to README

- Add Development & Testing section with sandbox commands
- Include quick reference for sandbox operations
- Link to detailed testing documentation

Author: SatanshuMishra

README.md

@@ -15,3 +15,25 @@ A solution for building standardized git commits!
 `labcommitr init`, `-i`: Create a file called `.labcommitrc` in the root directory of the current git repo.
 
 `labcommitr go <type> [...message]`: Quickly submit a commit of the specified type with a message. If a message is not specified, a generic one will be generated for you (it is not good practice, however its BLAZINGLY FAST).
+
+## Development & Testing
+
+### Testing Sandbox
+
+For safe testing of Labcommitr commands without affecting your real repository, use the testing sandbox:
+
+```bash
+# Create sandbox with config (if available)
+pnpm run test:sandbox
+
+# Create sandbox without config (start from scratch)
+pnpm run test:sandbox:bare
+
+# Quick reset for iterative testing
+pnpm run test:sandbox:reset
+
+# Clean up
+pnpm run test:sandbox:clean
+```
+
+See [`scripts/README.md`](scripts/README.md) for complete testing documentation.