103def317d
Closes the cross-file checkpoint-atomicity gap in ADR-0156. The four checkpoint files now live in a committed gen-NNNN/ directory; the single atomic os.replace of a 'current' pointer file is the commit boundary. A kill before the pointer swap leaves the prior committed generation intact; a kill after commits the new generation. Unreferenced gen dirs are ignored. ADR-0156's deferred parent-dir fsync is also closed. Key changes: - engine_state/__init__.py: begin_generation() + commit_generation() + _resolve_dir() for all load_* methods. Flat-layout legacy checkpoints migrate into gen-0000 on first begin_generation call. GC retains K=2 committed generations. - chat/runtime.py: checkpoint_engine_state uses the two-phase commit; finalize_turn_trace_hash no longer writes discovery_candidates outside the generation sequence (the second unguarded write path is closed). - evals/l10_continuity/runner.py: _inject_orphan_tmp updated to inject the two orphan shapes of the generation model. - tests/test_adr_0219_generation_checkpoint.py: 18 tests, one per acceptance-gate bullet + biting mutation variant each. L10 lane: all_gates_pass=true; versor_condition<1e-6 throughout. Smoke: 95 passed. Runtime: 20 passed. |
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| .. | ||
| adr | ||
| analysis | ||
| architecture | ||
| audit | ||
| brief | ||
| briefs | ||
| curriculum | ||
| decisions | ||
| evals | ||
| handoff | ||
| handoffs | ||
| implementation | ||
| issues | ||
| lab | ||
| planning | ||
| plans | ||
| research | ||
| sessions | ||
| workbench | ||
| zig | ||
| admissibility-exemplars.md | ||
| audio_pipeline_overview.md | ||
| capability_roadmap.md | ||
| claims_ledger.md | ||
| ethics_packs.md | ||
| EVAL_AUDIT_2026-05-20.md | ||
| eval_methodology.md | ||
| formation_pipeline_plan.md | ||
| frontier_baselines.md | ||
| gaps.md | ||
| hitl-backpressure.md | ||
| holdout_recipients.txt | ||
| identity_packs.md | ||
| master-plan-post-substrate-audit.md | ||
| memo.html | ||
| model_dependency_size_tally.md | ||
| pack_inventory_2026-05-21.md | ||
| position_paper.md | ||
| PROGRESS.md | ||
| recognizer-registry.md | ||
| refusal-taxonomy.md | ||
| reviewers.yaml | ||
| runtime_contracts.md | ||
| RUST.md | ||
| safety_packs.md | ||
| teaching_order.md | ||
| test-debt-quarantine.md | ||
| truth_seeking_schema.md | ||
| Whitepaper.md | ||
| Yellowpaper.md | ||