forth: Hayes conformance runner + baseline scoreboard (165/590, 28%)

plans/forth-on-sx.md

@@ -74,8 +74,8 @@ Representation:
 - [x] `DO`, `LOOP`, `+LOOP`, `I`, `J`, `LEAVE` — counted loops (needs a return stack)
 - [x] Return stack: `>R`, `R>`, `R@`, `2>R`, `2R>`, `2R@`
 - [x] Vendor John Hayes' test suite to `lib/forth/ans-tests/`
-- [ ] `lib/forth/conformance.sh` + runner; `scoreboard.json` + `scoreboard.md`
-- [ ] Baseline: probably 30-50% Core passing after phase 3
+- [x] `lib/forth/conformance.sh` + runner; `scoreboard.json` + `scoreboard.md`
+- [x] Baseline: probably 30-50% Core passing after phase 3
 
 ### Phase 4 — strings + more Core
 - [ ] `S"`, `C"`, `."`, `TYPE`, `COUNT`, `CMOVE`, `FILL`, `BLANK`
@@ -99,6 +99,28 @@ Representation:
 
 _Newest first._
 
+- **Phase 3 — Hayes conformance runner + baseline scoreboard (165/590, 28%).**
+  `lib/forth/conformance.sh` preprocesses `ans-tests/core.fr` (strips `\`
+  and `( ... )` comments + `TESTING` lines), splits the source on every
+  `}T` so each Hayes test plus the small declaration blocks between
+  them are one safe-resume chunk, and emits an SX driver that feeds
+  the chunks through `lib/forth/hayes-runner.sx`. The runner registers
+  `T{`/`->`/`}T` as Forth primitives that snapshot the dstack depth on
+  `T{`, record actual on `->`, compare on `}T`, and install stub
+  `HEX`/`DECIMAL`/`TESTING` so metadata doesn't halt the stream. Errors
+  raised inside a chunk are caught by `guard` and the state is reset,
+  so one bad test does not break the rest. Outputs
+  `scoreboard.json` + `scoreboard.md`.
+
+  First-run baseline: 165 pass / 425 error / 0 fail on the first 590
+  chunks. The default cap sits at 590 because `core.fr` chunks beyond
+  that rely on unsigned-integer wrap-around (e.g. `COUNT-BITS` with
+  `BEGIN DUP WHILE … 2* REPEAT`) which never terminates on our
+  bignum-based Forth; raise `MAX_CHUNKS` once those tests unblock.
+  Majority of errors are missing Phase-4 words (`RSHIFT`, `LSHIFT`,
+  `CELLS`, `S"`, `CHAR`, `SOURCE`, etc.) — each one implemented should
+  convert a cluster of errors to passes.
+
 - **Phase 3 — vendor Gerry Jackson's forth2012-test-suite.** Added
   `lib/forth/ans-tests/{tester.fr, core.fr, coreexttest.fth}` from
   https://github.com/gerryjackson/forth2012-test-suite (master, fetched