I1: office-hours-brain-writeback reads the long skill with Read and skips the preamble

4 of 18 trials ended error_max_turns at the unchanged 12-turn budget with a
gbrain search but no gbrain put. The failing trial in 37151477069 read the
1260-line rendered SKILL.md with cat, got truncated output, spent four more
turns re-reading it with sed, then ran the preamble's skill-start block. The
passing trials skipped the preamble. The prompt now says to read the skill
with the Read tool and skip the preamble, onboarding, telemetry and
contributor sections, as the plan-eng fixtures already do. Budget unchanged.

test/skill-e2e-office-hours-brain-writeback.test.ts

@@ -235,7 +235,7 @@ exit 0
           model: resolveEvalModel('capture'),
           run: (signal) => runSkillTest({
             signal,
-            prompt: `Read office-hours/SKILL.md for the workflow.
+            prompt: `Read office-hours/SKILL.md for the workflow with the Read tool (it is long; Bash output truncates it). Skip its preamble bash block, onboarding, telemetry and contributor sections — go straight to the workflow.
 
 Read pitch.md — that's a founder pitch coming to office hours. Select Startup Mode. Skip any AskUserQuestion — this is non-interactive; auto-decide the recommended option for any question.