Brummel
3f75d59598
Closes the cycle-0090 (#156) work and delivers the "Topology-as-data: blueprint serialization & loader (C24)" milestone. Cycle-0090 audit (architect drift review, range 7ad7f58..HEAD): drift-clean on substance. Tier-1 forward-tolerance is genuinely serde-default (deny_unknown_fields = 0 in every production struct), pinned at envelope + primitive across both the in-crate and public-seam tests; Tier-2 refusals real and green; no struct/signature/runtime change; the invariant-5 acyclicity lockstep (construction gate <-> bootstrap Kahn sort) undisturbed; invariant-9 resolver stays injected, no registry. The one medium item the architect flagged — the C24 Remaining block carried no deferral signal for #158/#159 — is fixed in this commit's ledger update. Milestone fieldtest (fieldtests/milestone-topology-as-data/, the close-gate evidence): GREEN, 0 behavioural bugs. A downstream consumer ran the full author -> serialize -> load -> construct -> introspect -> reproduce story from the public surface alone — round-trip bit-exact on both authoring surfaces (Rust builder + op-script CLI), build-free introspection, Tier-1/Tier-2 forward-compat by name, fail-fast diagnostics by identifier. Verified the headline claims myself (the two Rust binaries + the CLI build/diff + the fail-fast exits), not just the agent's report. Findings triaged to the forward queue (none blocking): op-script grammar undocumented + a stale cycle-0088 example (#163); canonical trailing-newline divergence + Composite Debug/PartialEq ergonomics (#164); CLI discoverability of build/introspect + no `graph run` (commented on #159); the newline as a content-addressing prerequisite (commented on #158). #158 (content-address topology in the manifest) and #159 (retire the hard-wired harnesses) were moved OUT of this milestone: both are premature until the World generates runs from blueprint-data (commit still fully identifies every hard-wired topology), so they belong to the project-as-crate / World cycle. The C24 ledger Status records the delivery and the deferral. Ephemeral cycle-0090 spec + plan removed per the lifecycle convention. The Gitea milestone container is closed on user ratification (this run tees up the close, does not click it).