B8 (EPIC): full orchestrator dissolution

[aarontrowbridge]

What to build

Full orchestrator dissolution: move ALL control flow (experiment loop + develop-mode DAG walk) into the harness/score, and retire orchestrator.md on the amicode side. Claude Code keeps its root-orchestrator until the harness reaches parity (dual-runtime is correct until then, W-8). Epic — break into sub-issues when B4 lands. (Spec spec-20260708-112732 §1, §3.1, §8.)

Acceptance criteria

• experiment loop + develop DAG both run from harness/score on the amicode runtime
• orchestrator.md no longer carries control flow (amicode side)
• convergence trigger documented; CC root-orchestrator retirement is a follow-up

Blocked by

• Blocked by B4: harness-reframe prototype (experiment iteration → score+extension) #109

Provenance

Design spec (Aaron's vault): spec-20260708-112732; plan plan-20260708-214610 (slice B8, EPIC — subdivide when B4 lands).

[aarontrowbridge]

Decomposed (B4 landed, PR #120). Per this epic's own note, subdividing now: #121 (N-iteration loop), #122 (develop DAG walk), #123 (retire orchestrator.md), #124 (real leaf dispatch). All build on the B4 prototype + the merged tool spine, and want Jack's review of the harness approach before implementation. This epic tracks them.