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The runtime is JSPI-only; this removes everything that still pretended otherwise. Three exhaustive sweeps (C++/JS+build+CI/tests+docs) drove the inventory; every deletion verified by grep closure + full gates. Broken-right-now fixes: - deploy-staging.yml passed the retired opt_level input — the workflow could not even start. Removed. - env.sh carried dead exports with a live -sASYNCIFY=1 inside (WASM_LDFLAGS/PTHREAD_LDFLAGS, zero consumers). Removed; the WASM_LEGACY_EXCEPTIONS rationale rewritten to the real reason. - docker/build.sh exported PCBJAM_ASYNC_BACKEND (read nowhere). Gone. Dead weight removed: - binaryen submodule (nothing builds or invokes it), wasm-opt-bench workflow + scripts/bench/, get-wasm-opt.sh, diagnostics.js (242 lines of Asyncify-API-only code), the KICAD_PIPELINE background-postprocess scaffolding (existed to parallelize the deleted wasm-opt phase; the postprocess is a seconds-long node script and now runs inline), build-monitor's dead asyncify rows, sched-context orphan build output, dead .gitignore entries, the .jspi-assets spike dir (the two wf-result research JSONs moved to docs/features/async/migration-evidence/). - bindings: fiber_park.h + its 12 embind registrations (broken-if- called under JSPI), the kicadOpenFileStart/OPEN_JOB starter route, main_stack_runner.h + 5 includes, the always-null context-sleep weak hook in nanosleep_yield.c. - shim: the backend field (installed-flag idempotency instead), noteContextWait (dead both sides), the __wxAsyncifyDump alias (+ the WasmTool fallback and string-dump normalize branch). - web: the emscripten-6-ignored mainScriptUrlOrBlob option in boot.ts (gerber-demo keeps it: it loads the deployed CDN release, which predates emscripten 6 — noted inline). Conditionals: all 'backend === jspi' checks reduced to scheduler- presence checks; races_quiescent re-keyed from Asyncify.state (vacuous) to real backlog quiescence (resumeReady/mutatorQueue — NOT _windowLive, which is the probing activation's own window by definition). Renames (identifiers only, no file renames): ASYNC_LINK_FLAGS→ JSPI_LINK_FLAGS and Makefile ASYNC_LDFLAGS→JSPI_LDFLAGS, kicadCollabFiberBusy→kicadCollabBusy (embind + web + tests), collab_common.h fiber*→apply*/coroutine naming, asyncifySignatures→ wasmTrapSignatures (lists byte-identical). Tests: the two remaining vacuous [wx-asyncify]/fiber-resume-refused asserts re-keyed to live JSPI beacons; eeschema-load's failure message no longer sends the developer to a deleted script; wait-beacons' dead families/parser deleted; lane-0 legacy-glue guards removed (lane 0 is unconstructible); the embind test.fail re-gated with the JSPI reason (plain embind invokers cannot suspend — verified still failing); lint-determinism now scans tests/jspi (166 files clean); eeschema-collab local-move gated to chromium (~50% flaky on FF even solo; pcbnew twin covers both engines). Docs: DEBUG.md rewritten as the JSPI debugging guide; build.md describes the single-phase build; docs/features/async/README.md banner-marked historical and repointed at the NEW 23-jspi-runtime.md (current architecture: export census, turnstile, libcontext ownership + refusal contract, embind call shapes, the em-pthread service-wrapper trick, exception policy, known gaps). Gates on the cleaned tree: test:e2e 725 passed / 0 failed (after the quiescence-probe fix; the 3 other reds were verified contention flakes solo-green or the documented FF gate), web 76/0, jspi 18/18 both engines, vitest 295/295 + 17/17, all lints green, live-app census clean. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016X9eh1s5sTx1o9Em9KBuwR
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94 lines
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# Build directories
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build/
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build-*/
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cmake-build-*/
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# IDE
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.idea/
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.vscode/
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*.swp
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*.swo
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*~
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# Compiled objects
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*.o
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*.obj
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*.a
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*.so
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*.dylib
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*.dll
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# WebAssembly output (but not Makefiles that end in .wasm)
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*.wasm
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!Makefile.wasm
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*.js.map
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*.wasm.map
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# macOS
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.DS_Store
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# Emscripten cache
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.emscripten_cache/
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# Local emsdk installation (managed by scripts/setup-emsdk.sh)
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/tools/emsdk/
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# Clean clone for reproducible builds (generated by build-wxwidgets-wasm-clean.sh)
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wxwidgets-clean/
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# Test artifacts
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/tests/node_modules/
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/tests/playwright-report/
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/tests/test-results/
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/tests/pw-artifacts/
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/tests/.test-port
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/test-results/
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/tests/apps/*.js
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/tests/apps/*.html
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/tests/apps/minimal_test.wasm
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/tests/apps/standalone/*/*.js
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/tests/apps/standalone/*/*.html
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/tests/apps/standalone/*/*.wasm
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/tests/apps/kicad/*.js
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/tests/apps/kicad/*.wasm
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# Demo board for the gerbview print test — provisioned at setup from
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# site/public/gerber-demo/board (see tests/scripts/setup-kicad-wasm.sh), not committed.
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/tests/apps/kicad/board/
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# DOM-port test bundles (mirrored + built by scripts/build-wasm-test.sh --dom)
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# Worktree-local canvas reference snapshot for regression gating (see
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# features/wx-dom-port docs); derived from a local run, not a project asset
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/tests/phase0-canvas-reference/
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/tests/phase0-timestamp-noisy.txt
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/tests/apps/kicad/*.tar.gz
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!tests/apps/kicad/pcbnew.html
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/tests/apps/gal-webgl/*.js
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/tests/apps/gal-webgl/*.wasm
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/tests/apps/3d-webgl/*.js
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/tests/apps/3d-webgl/*.wasm
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/temp/
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*.log
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*.tmp
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output/
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*.d
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.playwright-mcp
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.claude/worktrees/
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# Feature patch scratch (generated by scripts/create-feature-patches.sh).
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# Curated design docs live under docs/features/ and ARE committed.
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/features/
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# Temporary/disposable prebuilt WASM sets (native-EH + JS-EH × eeschema + pcbnew
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# O1 builds) + the standalone perf harness, used to reproduce the runtime-perf
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# comparison on demand. Large (~1 GB), never committed.
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/benchmark-builds/
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/memory/
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# Wrangler (Cloudflare CLI) local state/cache — created when running R2 deploys.
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.wrangler/
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tests/.scratch/
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*.o.stamp
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tests/apps/standalone/*/stack_test*.mjs
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tests/apps/standalone/*/coroutine_jspi_test*.mjs
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