Merge pull request #477 from vitali87/docs/fix-installation-gap

docs: fix installation gap — add Memgraph and cgr verification steps

Author: vitali87

README.md

@@ -232,9 +232,20 @@ ollama pull llama3.2
 
 4. **Start Memgraph database**:
 ```bash
-docker-compose up -d
+docker compose up -d
 ```
 
+5. **Verify installation**:
+```bash
+# If installed from PyPI:
+cgr --help
+
+# If running from source:
+uv run cgr --help
+```
+
+> **Note**: When running from source (cloned repo), prefix all `cgr` commands below with `uv run`, e.g., `uv run cgr start ...`
+
 ## 🛠️ Makefile Commands
 
 Use the Makefile for common development tasks: