Draw every path through drawSteps over its compiled steps, deleting pathDraw and pathProbe

todo.md

@@ -40,10 +40,6 @@ maintainer chose on 2026-09-30 to go on with the path steps regardless.
 
 This round, in order:
 
-- Draw every path through one interpreter over those steps, `drawSteps`, with `descend`
-  probing into a stack buffer, deleting `pathDraw`, and replace the decision "The path
-  walks are separate loops": the prototype held `perf_test.go` once a step held no
-  node, the probe returned its slice and the interpreter took `levels`.
 - Fold `checkNoOverlap` and `checkNoRepeatedRead` into `heldCheck`, so `compileFormat`
   compiles and nothing more.
 - Fix at compile how `readField` reads an arm, `arm.kind`, deleting its two panics and