[Claude Code plugin] k8s-gate 'helm dependency build || true' swallows helm crash as no dependencies

## Observed symptom fix(bootstrap): k8s-gate's 'helm dependency build || true' swallows a helm crash as 'no dependencies' <!-- story-spec:prose:start --> Problem The shipped IaC gate template, `development/skills/bootstrap/templates/iac/scripts/k8s-gate.zsh.tmpl`, runs this in its render stage: ## Literal error text ``` failure is undiagnosable. helm dependency build "$d" >/dev/null || true ``` ## Environment GitHub timo-jakob/timos-claude-code-plugins #1874 ## Trigger / context Public GitHub report in timo-jakob/timos-claude-code-plugins (FRESH_7D). ## Source evidence - https://github.com/timo-jakob/timos-claude-code-plugins/issues/1874 (2026-09-26T20:10:32Z) — evidence_class: PRIMARY_ISSUE_REPORT — #1874 ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:49:02.645589Z - scout_id: C343cff3a51 ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome. Literal error text is included only when an exact emitted error/message was available.