design-b D-1 gate: battery green scheduler-only; startModal import scrub + work log

Gate results (single battery, scheduler-only): wx app battery +
asyncify + coroutine 363 passed / 3 skipped / 0 failed; full kicad
suite 138 passed / 30 skipped / 1 failed — the one failure is the
pre-existing local occ-probe glb case (predates D-1, unrelated).

Post-gate scrubs: vestigial 'startModal' removed from ASYNCIFY_IMPORTS
(tests/apps/Makefile.wasm) and env.startModal from
scripts/common/asyncify-imports.txt (the import no longer exists in any
wasm; both lists are boundary supersets so behavior is identical).
Stale comment pointers to the deleted legacy modal machinery updated.
Doc 20: D-1 work log added, status flipped to IN PROGRESS.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TEHGiiXMShNXbBr7gSJ7iz

docs/features/async/20-design-b-core-plan.md

@@ -1,9 +1,10 @@
 # 20 — Design B core: parkable activities as scheduler contexts
 
-> **Status: PLAN (2026-08-05), not started.** The remaining core of Design B
-> ([`06`](06-design-b-fiber-first-runtime.md) B1+B2), scoped against what S0–S6 actually
-> built ([`17`](17-mailbox-scheduler-plan.md)) and motivated by the stranded-fiber hang
-> ([`19`](19-quasimodal-fiber-strand.md)). Supersedes doc 12's phases 2–3 for this layer.
+> **Status: IN PROGRESS — D-1 DONE (2026-08-05, work log §10).** The remaining core of
+> Design B ([`06`](06-design-b-fiber-first-runtime.md) B1+B2), scoped against what S0–S6
+> actually built ([`17`](17-mailbox-scheduler-plan.md)) and motivated by the
+> stranded-fiber hang ([`19`](19-quasimodal-fiber-strand.md)). Supersedes doc 12's
+> phases 2–3 for this layer.
 
 ## 1. The one-sentence goal
 
@@ -185,3 +186,36 @@ mailbox migration.
   the ambiguity — the 68/1 class is currently held closed by v0.1.28's scheduling trick,
   and D5 replaces a working mitigation with a structural one. Re-evaluate with D4's
   telemetry in hand rather than committing now.
+
+## 10. Work log
+
+### D-1 — legacy runtime deleted (2026-08-05) ✅
+
+Baseline tag `d-1-pre-delete` on root/pcbjam/kicad/wxwidgets/binaryen before the first
+deletion. Four commits, one per deletion group:
+
+- **D-1a** (pcbjam `e87d7f7`): `races_test_noheal`/`races_test_nosleepfix` link+inject
+  variants out of `tests/apps/Makefile.wasm`; the shim-redundancy pin specs out of
+  `asyncify-races.spec.ts`; `tests/README.md` open task resolved.
+- **D-1b** (pcbjam `0a143ab`): injector injects asyncify-scheduler.js unconditionally —
+  `WX_SCHEDULER=0`, `SHIM_DISABLE_HANDLESLEEP`, `SHIM_DISABLE_TRAMPOLINE_HEAL` deleted;
+  `shims/handlesleep.js` deleted (423 lines); `.ci-cache-epoch` → 11.
+- **D-1c** (wx `c44c684f7d`): every `wxWasmMailboxEnabled()` branch collapsed to the
+  scheduler lane (timer enqueue, wheel replay, modal wait, nested wait, unconditional
+  top-level tick, ungated deliver); probe deleted from mailbox.h; replaced by a
+  fail-fast `wxWasmSchedulerAssertInstalled()` abort at DoRun entry.
+- **D-1d** (wx `24843897e8` + pcbjam `1831668`): `startModal`, `wxWasmRunNestedLoop`,
+  the wx-dom popup pump, `_wxModalResolvers`/`_endModal`/`_pendingModalResult`/
+  `_wxNestedLoopExit`, and the bare `emscripten_async_call` timer entries deleted
+  (timer parked-retry re-arms via the mailbox, kept as a tripwire); the scheduler
+  shim's delivery-tick error path and diagnostics.js moved to wait-registry
+  containment/observation.
+
+**Gate (all scheduler-only, single battery):** wx app battery + asyncify (races +
+scheduler core) + coroutine trio = 363 passed / 3 skipped / 0 failed; full kicad suite
+= 138 passed / 30 skipped / 1 failed — the failure is the pre-existing local
+occ-probe `glb` case (known-unrelated, predates D-1). Vestigial `startModal` scrubbed
+from `ASYNCIFY_IMPORTS` (Makefile.wasm) and `asyncify-imports.txt` post-gate.
+
+Consequence: every later phase is single-path — one code path per park site, one glue
+per build, one battery per gate. Next: **D0** (park-site audit + the doc-19 red spec).

scripts/common/asyncify-imports.txt

@@ -17,5 +17,4 @@ env.emscripten_idb_*
 # --- Project suspending imports ---
 env.__asyncjs__*
 env.emscripten_fiber_swap
-env.startModal
 env.js_*

tests/apps/Makefile.wasm

@@ -61,14 +61,13 @@ CXXFLAGS += $(EH_FLAGS)
 # Base Emscripten flags (for all apps)
 # ASYNCIFY enables blocking modal dialogs (ShowModal waits for user)
 # ASYNCIFY_IMPORTS tells Emscripten which imported JS functions can unwind the stack
-# - startModal: for modal dialogs
 # - js_writeTextToClipboard, js_readTextFromClipboard, js_clipboardHasText, js_clearClipboard: for clipboard
 # - js_enumerateFonts: for font enumeration via Local Font Access API
 BASE_LDFLAGS = $(EH_FLAGS) -sALLOW_MEMORY_GROWTH -sERROR_ON_UNDEFINED_SYMBOLS=0 \
                -s "EXPORTED_RUNTIME_METHODS=['HEAPU8','HEAP8','HEAP32','ccall']" \
                -sASYNCIFY=1 \
                -sASYNCIFY_STACK_SIZE=65536 \
-               -sASYNCIFY_IMPORTS=['startModal','js_writeTextToClipboard','js_readTextFromClipboard','js_clipboardHasText','js_clearClipboard','js_enumerateFonts']
+               -sASYNCIFY_IMPORTS=['js_writeTextToClipboard','js_readTextFromClipboard','js_clipboardHasText','js_clearClipboard','js_enumerateFonts']
 
 # LDFLAGS for non-GL apps (standalone tests)
 LDFLAGS_NOGL = $(DEBUG_LDFLAGS) $(BASE_LDFLAGS) $(WX_LDFLAGS_NOGL)
@@ -103,7 +102,7 @@ COROUTINE_BASE_LDFLAGS = $(EH_FLAGS) -sALLOW_MEMORY_GROWTH -sERROR_ON_UNDEFINED_
                -s "EXPORTED_RUNTIME_METHODS=['HEAPU8','HEAP8','HEAP32','ccall']" \
                -sASYNCIFY=1 \
                -sASYNCIFY_STACK_SIZE=65536 \
-               -sASYNCIFY_IMPORTS=['startModal','js_writeTextToClipboard','js_readTextFromClipboard','js_clipboardHasText','js_clearClipboard','js_enumerateFonts','emscripten_fiber_swap']
+               -sASYNCIFY_IMPORTS=['js_writeTextToClipboard','js_readTextFromClipboard','js_clipboardHasText','js_clearClipboard','js_enumerateFonts','emscripten_fiber_swap']
 LDFLAGS_COROUTINE = $(DEBUG_LDFLAGS) $(COROUTINE_BASE_LDFLAGS) $(WX_LDFLAGS_NOGL)
 
 # The asyncify-races harness must match PRODUCTION asyncify semantics: the KiCad

tests/asyncify/asyncify-races.spec.ts

@@ -90,10 +90,12 @@ test.describe('Asyncify races — green targets (full shims)', () => {
     page,
     testLogger,
   }) => {
-    // RED today: wx dialog.cpp keeps the modal resolver in a single slot
-    // (Module._endModal = fn; delete after use), so with three nested modals
-    // the middle EndModal resolves nothing and its ShowModal parks forever.
-    // GREEN after the Stage-3 wx fix (LIFO resolver stack).
+    // Historical red: the pre-scheduler wx dialog.cpp kept the modal resolver
+    // in a single slot (Module._endModal), so with three nested modals the
+    // middle EndModal resolved nothing and its ShowModal parked forever.
+    // Green since the LIFO resolver semantics, now the scheduler wait
+    // registry's per-kind stacks (doc 17 S4; legacy machinery deleted at
+    // doc 20 D-1).
     await page.goto('/standalone/asyncify-races/races_test.html#only=modal_in_modal_in_modal');
     await tryLoadApp(page, 30000);
 

tests/web/eeschema-fp-selector.spec.ts

@@ -31,11 +31,10 @@ async function canvasCenter(page: Page): Promise<{ x: number; y: number }> {
 // very commit that dropped its expected-fail marker): the no-fp-index path
 // trips the crash-free gate below with "[wxWasm] modal event pump error -
 // cancelling modal: RuntimeError: index out of bounds" — the known
-// nested-modal-inside-doRewind asyncify pump limitation (see
-// wxwidgets/src/wasm/dialog.cpp startModal comment and
-// docs/features/ngspice-split/README.md "The editor side"). Needs the pump
-// crash fixed (or the chooser's modal flow kept off the nested-rewind path),
-// not a looser assertion.
+// nested-modal-inside-doRewind asyncify pump limitation (historical: the
+// legacy startModal pump was deleted at doc 20 D-1; modals are scheduler
+// waits now — re-evaluate against the scheduler runtime; see also
+// docs/features/ngspice-split/README.md "The editor side").
 test.skip('symbol chooser footprint selector populates and preview renders (eeschema)', async ({ page }) => {
   test.setTimeout(420000);
   const logs: string[] = [];