Three tasks, ordered by compile-gate discipline (each leaves a coherent build
gate satisfiable):
1. aura-core Firing enum + InputSpec.firing, threaded through aura-std Sma/Sub
in the same task (the field addition breaks both callers) -> full workspace
gate green.
2. aura-engine production rewrite: SourceSpec, SlotState (fresh_at + last_ts, the
two read clocks), NodeBox/Harness fields, the k-way merge run loop, and the
fires() firing predicate. The bootstrap/run signature change breaks the
in-module tests, so this task ends on a PARTIAL gate (cargo build -p
aura-engine --lib, which excludes #[cfg(test)]).
3. aura-engine tests: rewrite the 5 cycle-0003 tests onto the multi-source API
and add the firing rails -- mode A as-of hold, mode B barrier wait, mixed A+B
OR-combine, each with worked expected vectors -> full workspace gate.
Orchestrator decisions baked in: run length-mismatch is a caller bug -> assert_eq!
(not a typed error, not a silent no-op); historical specs/plans (0002/0003) pin
pre-cycle disk state and are left frozen; the test module gets an explicit
`use aura_core::{InputSpec, NodeSchema}` (harness.rs production never names those
types, so `use super::*` does not bring them, and putting them in the top-level
use would be an unused-import under -D warnings); the harness doc keeps RustAst's
model phrased without the literal Rc/RefCell tokens so the purity grep does not
self-match.
Grounding-check on the parent spec PASS; plan-recon confirmed every spec-named
path exists and the "before" shapes match disk.
refs walking-skeleton
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Three tasks, each leaving the workspace green:
1. Sub 2-input difference node in aura-std (+ test).
2. Sim in aura-engine: Edge/Target/BootstrapError + bootstrap (schema-sizing,
edge kind-check, Kahn topo-sort, cycle/bad-index/kind-mismatch rejection) +
the forwarding run loop (disjoint &mut-self destructure, no per-cycle alloc),
with 5 tests (chain, fan-out/join + determinism, cycle, kind-mismatch,
bad-index). aura-engine gains a test-only dev-dependency on aura-std.
3. Workspace gate: build / test (26) / clippy -D warnings / purity grep.
Orchestrator decisions baked in: observe captured at eval-time (no output
column); Sim stores only fields run reads (no write-only cycle_id/source_kind
that would trip `field never read`); the sim.rs doc avoids the literal
Rc/RefCell tokens so the purity grep does not self-match.
Five-task plan executing spec 0001: scalar set, Column/Window, KindMismatch,
AnyColumn, then a workspace build/test/clippy + surface-purity gate. Each task
adds its own module + re-export so the crate compiles green after every task;
14 unit tests pin the substrate contract incl. the wrong-kind-push guard.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Cargo workspace aura-core -> aura-engine -> aura-cli (bin `aura`) plus nodes/ for hot-reloadable cdylib node crates. Crate bodies are intentionally API-free; types arrive from the first spec. Adds the skills profile (.claude/dev-cycle-profile.yml), the project CLAUDE.md with the eight domain invariants, and the design-ledger skeleton.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Brummel