Document local CLI setup and harden live search suggestions

docs/modules/cli/guides/quickstart.md

@@ -20,6 +20,29 @@
 
 ### Installation
 
+#### Option 0: Source Checkout (local development)
+
+If you are working from this repository checkout, do not assume `stella` is already installed on `PATH`.
+Build or run the CLI from source first.
+
+Quick references:
+- `docs/API_CLI_REFERENCE.md`
+- `src/AdvisoryAI/__Tests/INFRASTRUCTURE.md`
+
+```bash
+# Run directly from source
+dotnet run --project "src/Cli/StellaOps.Cli/StellaOps.Cli.csproj" -- --help
+
+# Publish a reusable local binary
+dotnet publish "src/Cli/StellaOps.Cli/StellaOps.Cli.csproj" -c Release -o ".artifacts/stella-cli"
+
+# Windows
+.artifacts/stella-cli/StellaOps.Cli.exe advisoryai index rebuild --json
+
+# Linux/macOS
+./.artifacts/stella-cli/StellaOps.Cli advisoryai index rebuild --json
+```
+
 #### Option 1: .NET Tool (Recommended)
 
 ```bash