Document recent goose PRs (#5683)

documentation/docs/guides/config-files.md

@@ -84,6 +84,12 @@ GOOSE_CLI_MIN_PRIORITY: 0.2
 # Recipe Configuration
 GOOSE_RECIPE_GITHUB_REPO: "block/goose-recipes"
 
+# Search Path Configuration
+GOOSE_SEARCH_PATHS:
+  - "/usr/local/bin"
+  - "~/custom/tools"
+  - "/opt/homebrew/bin"
+
 # Observability (OpenTelemetry)
 otel_exporter_otlp_endpoint: "http://localhost:4318"
 otel_exporter_otlp_timeout: 20000
@@ -130,6 +136,19 @@ extensions:
     envs: {}                  # Environment values
 ```
 
+## Search Path Configuration
+
+Extensions may need to execute external commands or tools. By default, goose uses your system's PATH environment variable. You can add additional search directories in your config file:
+
+```yaml
+GOOSE_SEARCH_PATHS:
+  - "/usr/local/bin"
+  - "~/custom/tools"
+  - "/opt/homebrew/bin"
+```
+
+These paths are prepended to the system PATH when running extension commands, ensuring your custom tools are found without modifying your global PATH.
+
 ## Configuration Priority
 
 Settings are applied in the following order of precedence: