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engine: check_model_units rebuilds Stage0/Stage1 for the whole project per target model (quadratic in model count)

engineIssues with the rust-based simulation engineIssues with the rust-based simulation engine

rustPull requests that update Rust codePull requests that update Rust code

tech debt

Status: Open.

#966 In bpowers/simlin;

· bpowers opened on Jul 15, 2026

ltm: replace string-backed synthetic equations with typed IR

engineIssues with the rust-based simulation engineIssues with the rust-based simulation engine

ltmLoops that Matter (LTM) analysis subsystemLoops that Matter (LTM) analysis subsystem

tech debt

Status: Open.

#965 In bpowers/simlin;

· bpowers opened on Jul 15, 2026

engine: emit layout-independent fragments directly

engineIssues with the rust-based simulation engineIssues with the rust-based simulation engine

rustPull requests that update Rust codePull requests that update Rust code

tech debt

Status: Open.

#964 In bpowers/simlin;

· bpowers opened on Jul 15, 2026

diagram: sim-specs fields silently revert invalid input with no feedback

Status: Open.

#962 In bpowers/simlin;

· bpowers opened on Jul 13, 2026

app: NewUser marks the Username field invalid for the unrelated terms-agreement error

Status: Open.

#961 In bpowers/simlin;

· bpowers opened on Jul 13, 2026

diagram: Button silently drops unknown props (dead data-testid in ModuleDetails)

Status: Open.

#959 In bpowers/simlin;

· bpowers opened on Jul 13, 2026

build: per-package needs-format/format prettier scripts glob generated lib/ output (server, diagram); server also errors on a non-matching tsx pattern

bugSomething isn't workingSomething isn't working

Status: Open.

#957 In bpowers/simlin;

· bpowers opened on Jul 13, 2026

build: rstest node environment silently breaks named imports from goog-style CJS modules (google-protobuf *_pb)

Status: Open.

#956 In bpowers/simlin;

· bpowers opened on Jul 13, 2026

engine: LTM element-level circuit enumeration spends most of its time in string canonicalization/rotation churn (cross-product shapes)

ltmLoops that Matter (LTM) analysis subsystemLoops that Matter (LTM) analysis subsystem

Status: Open.

#955 In bpowers/simlin;

· bpowers opened on Jul 12, 2026

test: no corpus fixture for the belt apportion loop or for FIFO backlog / the four batch rules (README says #949 covers them; it does not)

Status: Open.

#954 In bpowers/simlin;

· bpowers opened on Jul 11, 2026

cli: stdout/stderr stream discipline is documented but unpinned by any test

Status: Open.

#953 In bpowers/simlin;

· bpowers opened on Jul 11, 2026

engine: model-level diagnostics leak the internal ModelError{code: details} Display form into user-facing messages

Status: Open.

#952 In bpowers/simlin;

· bpowers opened on Jul 11, 2026