Add show_full_output option to control output verbosity (#580)

* Add show_full_output option to control output verbosity

* Update base-action/src/run-claude.ts

Co-authored-by: Ashwin Bhat <ashwin@anthropic.com>

* Wire show_full_output through to base-action

* Document show_full_output security warnings in docs/security.md

---------

Co-authored-by: Ashwin Bhat <ashwin@anthropic.com>

base-action/src/index.ts

@@ -41,6 +41,7 @@ async function run() {
       model: process.env.ANTHROPIC_MODEL,
       pathToClaudeCodeExecutable:
         process.env.INPUT_PATH_TO_CLAUDE_CODE_EXECUTABLE,
+      showFullOutput: process.env.INPUT_SHOW_FULL_OUTPUT,
     });
   } catch (error) {
     core.setFailed(`Action failed with error: ${error}`);