v0.66.0

Changelog

Features

• 69360da feat(agent): sub-node turn checkpointing for mid-node resume (#427)
• d1d1859 feat(cli): progressive-disclosure help + preset design (#463)
• 513ef80 feat(parallel): branch-scoped ctx.branch_id for non-clobbering per-branch counters (#420)

Other

• 4439c7d docs(architecture): decision record for review fan-out cost asymmetry (#353)
• cea722b docs(build_product): proposal for verification cadence tuning (#490)
• 217a50d docs(release): v0.66.0 — sub-node checkpointing, branch_id, catalog retirement (dippin v0.68.0)
• f10daac docs+refactor(workflows): document base vs superspec, reconcile SpecLint drift (#307)
• c57be8a merge: branch_id engine primitive for branch-scoped counters (#420, engine half)
• 951d297 merge: document build_product vs superspec + spec-coherence preflight + examples dedup (#307)
• b0f1470 merge: retire the hand-maintained identity catalog; derive display names from dippin v0.68.0 (#570)
• 434357b merge: review fan-out cost asymmetry design analysis (#353)
• a8f359b merge: sub-node turn checkpointing for mid-node resume (#427, AC3)
• 389c83e merge: tiered --help disclosure for the run-flag surface + presets design doc (#463)
• 1e55c45 merge: verify-cadence design analysis — verification cost ~= implementation cost (#490)
• 8d31a7c refactor(llm): retire hand-maintained catalog, derive from dippin (#570)