docs: update SDK binary auto-download documentation (#20)

- Add binary auto-download note to troubleshooting
- Clarify that Python SDK v2.4.1+ handles binary automatically
- Add CAPISCIO_BINARY override documentation

Author: beonde

docs/troubleshooting.md

@@ -350,7 +350,10 @@ Note: `capiscio` is the CLI, `capiscio-sdk` is the Python SDK.
 
 **Problem:** The Go binary isn't accessible.
 
-**Solution:**
+!!! info "Automatic Download (Python SDK)"
+    As of SDK v2.4.1+, the Python SDK **automatically downloads** the capiscio-core binary if not found. No manual installation needed!
+
+**Solution for manual installation:**
 
 ```bash
 # Verify Go binary exists
@@ -361,6 +364,12 @@ curl -L https://github.com/capiscio/capiscio-core/releases/latest/download/capis
 chmod +x /usr/local/bin/capiscio
 ```
 
+**Custom binary location:**
+```bash
+# Override automatic detection
+export CAPISCIO_BINARY=/path/to/capiscio-core
+```
+
 ---
 
 ## CI/CD Issues