[mvallebr]

Summary

Final batch of audit follow-ups: #130 (DagNode), #132 (test naming + factory marker), and the #128 documentation note. Also refreshes uv.lock for v0.32.4.

Changes

#130 — DagNode

• Dropped the stringly-typed __getitem__/__setitem__/get proxies and the unused Dag.pop — zero callers in src or tests; three test call sites migrated to attribute access
• Grouped the 28 fields into five labeled layers (identity → user policy → compiled contracts → private diagnostics → scope metadata) so the distinct reasons to change are visible at a glance; the module docstring now states where "immutability" actually lives (frozen contract dataclasses like OutputContract/PublishPlan, not the mutable record itself)
• Assessed and deferred: the full StepSpec/CompiledNode split would rename attribute access across every executor and test construction site for zero behavioral gain. The field grouping makes that split mechanical if it's ever wanted — flagged in the code and in refactor(core): split DagNode god object; drop stringly-typed accessors #130.

#132 — test naming + factory marker

• 61 test functions renamed to test_given_X_when_Y_then_Z across the concentrated files (error threshold ×2 engines, wait_for_workers_after_shutdown, lifecycle stream ×2, each-resource lifecycle ×2, tee concurrency, expansion, observer runtime). Renames are mirrored across engines; the parity meta-test exception lists were updated accordingly
• Additive mark_as_factory() / FACTORY_MARKER protocol: materializer factories whose signature cannot be sniffed (partials over plain callables, callable objects) can now be tagged explicitly. Signature sniffing remains the default — nothing existing changes

#128 — docs

• New DESIGN_PHILOSOPHY §3.17 Bounded Lockstep Consumption Contract: sibling fan-out branches must be consumed in lockstep; sequential consumption circular-backpressures a bounded push runtime and is mathematically guaranteed to deadlock (the complex_parallel case — unfixable without unbounded buffering, hence documented instead)
• ROADMAP: completed bullets for sync/async parity enforcement, loud post-run streams, and fail-loud build validation

Tests

• 834 passing (was 832; +2 factory-marker tests)
• Full suite, corpus spec tests, sync/async parity meta-tests, ruff format/lint, mkdocs build --strict, and the pre-commit coverage gate all green
• No behavioral changes: accessor removal is dead-code deletion, renames are test-only, the marker protocol is additive, and docs are prose