- non-core scr_trap/scr_trap_fmt move from scr_console.c to scr_exception.c: the failure-channel unit is in every link, the runtime's own unit-test TU subsets included (the console unit is not)
- K8 additionally asserts no scr_loop/fiber/timer/child symbol is defined in or referenced by the archive — the design's mechanical backstop for the narrowed core base set
- five generic fixtures under tests/core-mode (scalars, buffers, reinit, traps, init-trap) with C probe drivers; the harness flips the profile emission and pins identical outputs across the two lanes
- K1 nm symbol exactness both directions; K8 ambient audit (no sigaction/signal/pthread_create/atexit/setvbuf references — scr_init and scr_lib_init compile out under SCR_CORE)
- K3 covers both arena postures over one core; K5-K7 cover sink-exactly-once, init traps, pre-registration abort, Uncaught rendering, poisoned-core aborts; K10 reruns K4/K5/K7 under ASan + the RC audit's re-init zero-heap seam
- K9 drives SC4002/SC4003/SC4004/SC4005/SC4007 end to end with the profile-teaching rider verbatim
- executable expansion in scr_console.c is byte-identical fputs/vfprintf + abort; core expansion in the new scr_core.c poisons, delivers to the registered sink exactly once, aborts pre-registration or if the sink returns
- 89 fputs/fprintf+abort pairs and 10 bare OOM aborts across the 20 core-linkable TUs now funnel; lazy atexit teardowns (json errdyn, regex bytecodes, symbol registry) reroute to the core reset registry via scr_atexit
- scr_core.c owns sink/poison/result-arena/reset-registry/marshalling helpers; scr_exception.c renders escaped exceptions as "Uncaught ..." into the funnel; scr_lib exposes its cleanup to the reset seam
- export default <mutable let> registers Node's snapshot as const storage keyed by the default alias symbol; resolveValueSymbol's default-hop walk stops importer reads there instead of chasing to the live let (corpus 2426 pins the snapshot/live split against export { x as default })
- named re-exports from installed npm packages lower as import-plus-export plumbing: the island load registers at the statement's position and bindings key the aliased symbols direct imports use (npm case npm-reexport covers named, renamed, CJS, and as-default spellings)
- node:perf_hooks joins the supported builtins: performance.now() lowers to scr_perf_now (the uptime anchor's monotonic clock, fractional ms), and performance.now.bind(performance) lowers as a () => number function value (corpus 2427); both backends
- scr_string_to_number: ECMA-262 StringNumericLiteral exactly — StrWhiteSpace trim (empty → +0), signed decimals through strtod over the validated span, unsigned 0x/0o/0b through the exact bignum rounding, trailing garbage → NaN
- oracle suite mirrors the formatting precedent: gen-tonumber-cases.mjs (Node is the oracle), 50k committed cases asserting bit-equal doubles under ASan + RC audit
- fuzzed once against Node on 1,000,000 mixed-shape strings: 1000000/1000000 bit-exact
Chris Tate