test: pin readSkillEffective's added-subsection change in harness-version.json as non-behavioral (CI quick-bun-default)

skill-startup.ts changed in this PR so readSkillEffective appends a variant's added ### subsections.
Its output is byte-identical to the pinned helper for every tier 2+ render without added
subsections (735 across all hosts) and for office-hours' pre-change SKILL.md, so no pass-rate
series resets. CHANGELOG Tests line updated.

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

scripts/harness-version.json

@@ -49,7 +49,7 @@
     "test/helpers/session-ledger.ts": {"blob":"a10bf28bf100f135b93c73818670dd147253cdd3","since":6,"nonBehavioral":"credential rejections are classed infra instead of assertion: no case's pass or fail changes; only failed trials whose provider rejected the run's key move class, so no rerun spends on a rejected key"},
     "test/helpers/session-runner.ts": {"blob":"cc65a66adafa9c053e3da3c6f17b5ac86c0eade7","since":6,"nonBehavioral":"Claude-host verdicts are unchanged: the Codex host (EVALS_HOST=codex, codex-host-runner) runs only when selected and records its own per-model series; the Codex runner refactor (execCodex extraction, onSpawn hook) keeps its events and verdicts and adds token cost accounting; host fields on the plan/report are absent for claude"},
     "test/helpers/skill-fixture.ts": {"blob":"8a654dae6b0a396d839b02179119ae3e3bb13f69","since":6,"nonBehavioral":"extractSkillBody and extractSkillSections follow the shared-preamble hoist (pointer plus sections/preamble.md); every fixture they build is byte-identical to the pre-hoist output (compared for 8 body and 4 section extractions), so no case's input or verdict changes; the /ship review then reworded only comments and two error messages, so no fixture byte changes"},
-    "test/helpers/skill-startup.ts": {"blob":"f2096462850a33e0913cad4cca2cf3c75eedb0e3","since":6,"nonBehavioral":"new in the shared-preamble hoist: skill-fixture.ts's extraction splices sections/preamble.md through readSharedSections and readSkillEffective, and every fixture it builds is byte-identical to the pre-hoist output (skill-fixture.ts's entry), so pinning it changes no case's input or verdict"},
+    "test/helpers/skill-startup.ts": {"blob":"a8d21e3817c3f35a1d06af325c92fde7d420e377","since":6,"nonBehavioral":"readSkillEffective also appends a variant's added ### subsections (office-hours' Open-ended questions); readSkillStartup, readSharedSections and readSkillEffective return bytes identical to the pinned helper for every tier 2+ render without added subsections (735 across all hosts) and for office-hours' SKILL.md before this PR, so office-hours' fixture input changes only because its prompt changed in this PR, not because the helper did"},
     "test/helpers/test-selection.ts": {"blob":"51655f89f66be7a5ec487e2abfe4744300ebd5f6","since":6},
     "test/helpers/touchfiles.ts": {"blob":"15f369056d41b9dc42dcd86f81f60c878074704c","since":6}
   }