> Gate definition. The spawning skill passes this file's path to the director agent; the AGENT reads it — the parent session should not. # TD-CHANGE-IMPACT — Design Change Impact Review Agent: `technical-director` | Model tier: Opus | Domain: Architecture, engine risk, performance **Trigger**: After the Design Change Impact Report is produced (`/propagate-design-change` Phase 6), before the resolution workflow begins **Context to pass**: - The full Design Change Impact Report from Phase 6 — change summary, every affected ADR with its Still Valid / Needs Review / Likely Superseded classification, and the recommended actions **Prompt**: > "Review this design-change impact assessment before any ADR is revised. Are the > impact classifications correct — in particular, is any ADR under-classified > (marked Still Valid when the change actually contradicts its assumptions)? Are > the recommended actions architecturally sound? Were any cascading effects on > other ADRs or systems missed — decisions that depend on the ones already > flagged? Return APPROVE, CONCERNS [the specific ADRs or recommendations to > revisit], or REJECT [the assessment must be re-analyzed before resolution > begins — say what was missed]." **Verdicts**: APPROVE / CONCERNS / REJECT