[codex] Harden compiler for Haiku

[irl-dan]

Summary

• Rework the compiler program into a single-session pass list so cheap/fast models do not launch nested agent sessions during prose compile.
• Tighten the IR/Forme checklist around trigger-to-judge wiring, system fulfillment formeManifestId, diagnostic severity, and full Forme manifest shape.
• Add test coverage to keep the compiler from reintroducing agent ... pass blocks.

Haiku validation

Using claude-haiku-4-5-20251001 with the Claude SDK harness and a fresh temporary skill install from this branch:

• research-inbox-triage: compile exit 0 in 63s; serve health passed.
• content-performance-loop: compile exit 0 in 66s; serve health passed.
• incident-briefing-room: compile exit 0 in 55s; serve health passed.
• release-readiness: compile exit 0 in 64s; serve health passed.

Initial Haiku runs had stalled or emitted invalid Forme shorthand/source summaries; the single-session compiler shape fixed the repeated failures.

Tests

• npm test -- tests/skills/open-prose.test.ts tests/prose/repository-ir.test.ts
• npm run typecheck
• npm run build