refactor(agent): consolidate enableYoloMode() to use applySessionMode

[gobylor]

Problem

enableYoloMode() in acp/index.ts performs the same setSessionMode call as the newly extracted applySessionMode helper, but with no error handling (errors propagate unhandled to the caller). This is a third duplication site.

Suggested Fix

Have enableYoloMode() delegate to this.applySessionMode(sessionMode, true, ...) instead of inlining the setSessionMode call. This consolidates all session mode application into a single method with consistent error handling and perf logging.

Files

• src/process/agent/acp/index.ts (enableYoloMode method, applySessionMode method)