diff --git a/tests/e2e/maximize.spec.ts b/tests/e2e/maximize.spec.ts
index 91c0cb2..2ecbbe1 100644
--- a/tests/e2e/maximize.spec.ts
+++ b/tests/e2e/maximize.spec.ts
@@ -56,6 +56,8 @@ test.describe('wxFrame::Maximize() Tests', () => {
 
   // Note: wxDisplay::GetFromWindow() has a bug returning invalid display index
   // This is a separate issue from the Maximize() functionality being tested
+  // Re-verified broken 2026-08-13: wxDisplay reports 0x0 in this harness app
+  // (JSPI build) — the port's display-geometry query, not Maximize().
   test.skip('Display geometry is reported correctly', async ({ page, testLogger }) => {
     await page.goto('/standalone/maximize/maximize_test.html');
     const loaded = await tryLoadApp(page);
diff --git a/tests/kicad/3d-viewer-deadlock.spec.ts b/tests/kicad/3d-viewer-deadlock.spec.ts
index ed99b06..f776cb6 100644
--- a/tests/kicad/3d-viewer-deadlock.spec.ts
+++ b/tests/kicad/3d-viewer-deadlock.spec.ts
@@ -58,7 +58,8 @@ test.describe('3D viewer camera-move deadlock', () => {
     // m_boardAdapter.m_Cfg while RenderEngineChanged() reads GetAppSettings<…>() — possibly
     // different instances in the merged kicad_editor bundle. Unskip once the toggle works:
     // the engagement guard below then validates the engine flip loudly.
-    test.skip(true, 'KNOWN ISSUE: the raytracer engine toggle is inert on the webgl-era wasm '
+    test.skip(true, // re-verified still inert 2026-08-13 (both engines, JSPI build)
+    'KNOWN ISSUE: the raytracer engine toggle is inert on the webgl-era wasm '
         + 'build — the deadlock mechanism cannot be driven until it works (see comment)');
     // One 187 MB wasm runtime is already heavy; keep this serial and generous.
     test.describe.configure({ mode: 'serial' });
diff --git a/tests/kicad/drift-trio-fuzz.spec.ts b/tests/kicad/drift-trio-fuzz.spec.ts
index 99bb876..aaa88c2 100644
--- a/tests/kicad/drift-trio-fuzz.spec.ts
+++ b/tests/kicad/drift-trio-fuzz.spec.ts
@@ -56,10 +56,10 @@ test.beforeAll(() => {
 });
 
 function skipFirefox(): void {
-  test.skip(
-    test.info().project.name.includes("firefox"),
-    "three heavy wasm tabs exceed Firefox's per-process wasm budget",
-  );
+  // 2026-08-13: guard retired — the JSPI build (~half the asyncify size) fits
+  // three editor tabs inside Firefox 153's per-process wasm budget; the
+  // whole file passes on kicad-firefox. Kept as a hook in case the wall
+  // returns with future growth.
 }
 
 /** mulberry32 — tiny deterministic PRNG. */
diff --git a/tests/kicad/drift-trio-scenarios.spec.ts b/tests/kicad/drift-trio-scenarios.spec.ts
index a754e23..52aea2a 100644
--- a/tests/kicad/drift-trio-scenarios.spec.ts
+++ b/tests/kicad/drift-trio-scenarios.spec.ts
@@ -46,10 +46,10 @@ test.beforeAll(() => {
 });
 
 function skipFirefox(): void {
-  test.skip(
-    test.info().project.name.includes("firefox"),
-    "three heavy wasm tabs exceed Firefox's per-process wasm budget",
-  );
+  // 2026-08-13: guard retired — the JSPI build (~half the asyncify size) fits
+  // three editor tabs inside Firefox 153's per-process wasm budget; the
+  // whole file passes on kicad-firefox. Kept as a hook in case the wall
+  // returns with future growth.
 }
 
 /** Poll until every tab's silent save contains `marker`. */
@@ -197,7 +197,8 @@ for (const ops of [SCH_OPS, PCB_OPS]) {
     // runs). A real same-item conflict-resolution race that needs its own
     // hunt — tracking: memory s4-value-race-divergence. The sequenced-edit
     // scenarios (S1–S3, S5–S8) have never diverged and stay active.
-    test.fixme(`${label} S4: move-vs-delete, value-vs-value, move-vs-move`, async ({
+    // re-enabled 2026-08-13: converges on the JSPI build
+    test(`${label} S4: move-vs-delete, value-vs-value, move-vs-move`, async ({
       context,
       testLogger,
     }) => {
@@ -241,7 +242,8 @@ for (const ops of [SCH_OPS, PCB_OPS]) {
     // locally at single-worker). A real CRDT/apply race that needs its own
     // hunt: capture both tabs' modelText diff at timeout, then bisect the
     // value-apply path. Tracking: memory s4-value-race-divergence.
-    test.fixme(`${label} S4b: value-vs-value converges (KNOWN ~5-8% divergence)`, async ({
+    // re-enabled 2026-08-13: converges on the JSPI build
+    test(`${label} S4b: value-vs-value converges (KNOWN ~5-8% divergence)`, async ({
       context,
       testLogger,
     }) => {
diff --git a/tests/kicad/drift-trio.spec.ts b/tests/kicad/drift-trio.spec.ts
index 69a5cce..59a17cb 100644
--- a/tests/kicad/drift-trio.spec.ts
+++ b/tests/kicad/drift-trio.spec.ts
@@ -51,10 +51,10 @@ test.beforeAll(() => {
 /** Heavy editors exceed Firefox's per-content-process wasm budget at 2+
  *  instances (see ysync-two-tab.spec.ts) — at 3 it is strictly worse. */
 function skipFirefox(): void {
-  test.skip(
-    test.info().project.name.includes("firefox"),
-    "three heavy wasm tabs exceed Firefox's per-process wasm budget",
-  );
+  // 2026-08-13: guard retired — the JSPI build (~half the asyncify size) fits
+  // three editor tabs inside Firefox 153's per-process wasm budget; the
+  // whole file passes on kicad-firefox. Kept as a hook in case the wall
+  // returns with future growth.
 }
 
 // ── pl_editor: green baseline validating the trio plumbing itself ────────────
diff --git a/tests/kicad/eeschema-collab.spec.ts b/tests/kicad/eeschema-collab.spec.ts
index 74215c5..9fcf41c 100644
--- a/tests/kicad/eeschema-collab.spec.ts
+++ b/tests/kicad/eeschema-collab.spec.ts
@@ -224,7 +224,8 @@ test.describe("eeschema collab bridge — single page", () => {
 test.describe("eeschema collab bridge — two tabs (BroadcastChannel)", () => {
   // SKIP headless for the same reason as the single-page apply test (harness open=false →
   // SCH_COMMIT no-ops). Verified working in the real web app.
-  test.skip("a local move propagates A→B", async ({ context, testLogger }) => {
+  // re-enabled 2026-08-13: passes on the JSPI build (flaked once under 2-worker trio load; green solo)
+  test("a local move propagates A→B", async ({ context, testLogger }) => {
     const channel = `ee-collab-e2e-${test.info().workerIndex}`;
     const bundle = path.resolve(__dirname, "../apps/kicad/collab-bundle.js");
 
diff --git a/tests/kicad/pcbnew-collab.spec.ts b/tests/kicad/pcbnew-collab.spec.ts
index ad23ec8..3588440 100644
--- a/tests/kicad/pcbnew-collab.spec.ts
+++ b/tests/kicad/pcbnew-collab.spec.ts
@@ -437,7 +437,8 @@ test.describe("pcbnew collab bridge — single page", () => {
 test.describe("pcbnew collab bridge — two tabs (BroadcastChannel)", () => {
   // SKIP headless for the same reason as the single-page apply test (harness can't PAINT).
   // Verified working in the real web app.
-  test.skip("a local move propagates A→B", async ({ context, testLogger }) => {
+  // re-enabled 2026-08-13: passes on the JSPI build (both engines)
+  test("a local move propagates A→B", async ({ context, testLogger }) => {
     const channel = `pcb-collab-e2e-${test.info().workerIndex}`;
     const bundle = path.resolve(__dirname, "../apps/kicad/collab-bundle.js");
 
diff --git a/tests/kicad/roundtrip.spec.ts b/tests/kicad/roundtrip.spec.ts
index c7f1bcb..0b20ad4 100644
--- a/tests/kicad/roundtrip.spec.ts
+++ b/tests/kicad/roundtrip.spec.ts
@@ -510,7 +510,7 @@ test.describe("round trip: file → yjs → file", () => {
   // fixture (via + gr_text + segments) therefore still loses those items on the
   // rebuild side. Un-fixme when the envelope parse is solved. Run with
   // --grep-invert skipped to see the live diff.
-  test.fixme(
+  test(  // re-enabled 2026-08-13: the asyncify-fragile envelope parse is gone with JSPI — passes both engines
     "pcbnew preserves items through a yjs round trip",
     async ({ context, testLogger }) => {
       const { orig, regen } = await roundTrip(context, PCB);
diff --git a/tests/kicad/ysync-libsymbols.spec.ts b/tests/kicad/ysync-libsymbols.spec.ts
index 5db382a..c748984 100644
--- a/tests/kicad/ysync-libsymbols.spec.ts
+++ b/tests/kicad/ysync-libsymbols.spec.ts
@@ -157,10 +157,8 @@ test.describe("v2 items wire — lib_symbols travel (miss 08A)", () => {
     context,
     testLogger,
   }) => {
-    test.skip(
-      test.info().project.name.includes("firefox"),
-      "two kicad_editor tabs exceed Firefox's per-process wasm budget",
-    );
+    // 2026-08-13: FF wasm-budget skip retired — the JSPI build fits two
+    // editor tabs on Firefox 153; passes on kicad-firefox.
 
     const room = `ysync-libsym-${test.info().workerIndex}`;
     const tabA = await context.newPage();
diff --git a/tests/kicad/ysync-two-tab.spec.ts b/tests/kicad/ysync-two-tab.spec.ts
index b3ee845..de2e4de 100644
--- a/tests/kicad/ysync-two-tab.spec.ts
+++ b/tests/kicad/ysync-two-tab.spec.ts
@@ -353,10 +353,8 @@ for (const [cfg, label] of [
       // same SpiderMonkey wall playwright-kicad.config.ts documents for x86
       // CI, hit at 2× on ARM). V8 handles it: runs on chromium-ci in CI and
       // --project=chromium locally.
-      test.skip(
-        test.info().project.name.includes("firefox"),
-        "two kicad_editor tabs exceed Firefox's per-process wasm budget",
-      );
+      // 2026-08-13: FF wasm-budget skip retired — the JSPI build fits two
+      // editor tabs on Firefox 153; passes on kicad-firefox.
 
       const room = `ysync-v2-${label}-bug01-${test.info().workerIndex}`;
       const tabA = await context.newPage();
diff --git a/tests/web/eeschema-fp-selector.spec.ts b/tests/web/eeschema-fp-selector.spec.ts
index 4960804..1799ffe 100644
--- a/tests/web/eeschema-fp-selector.spec.ts
+++ b/tests/web/eeschema-fp-selector.spec.ts
@@ -35,7 +35,8 @@ async function canvasCenter(page: Page): Promise<{ x: number; y: number }> {
 // 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(  // re-enabled 2026-08-13: the chooser fp-selector flow revived on the JSPI build (both engines)
+  'symbol chooser footprint selector populates and preview renders (eeschema)', async ({ page }) => {
   test.setTimeout(420000);
   const logs: string[] = [];
   page.on('console', (m) => logs.push(`[${m.type()}] ${m.text()}`));
diff --git a/tests/web/footprint-browse-remote.spec.ts b/tests/web/footprint-browse-remote.spec.ts
index 03daf67..4676df9 100644
--- a/tests/web/footprint-browse-remote.spec.ts
+++ b/tests/web/footprint-browse-remote.spec.ts
@@ -84,7 +84,14 @@ async function dblclickRow(page: Page, re: RegExp): Promise<string | null> {
   // KNOWN-BROKEN: the fp/sym editor kicadLibs enumerate/save flows are dead
   // (docs/features/web-e2e-rot/01-editor-lib-bridge-flows.md). fixme, not fail:
   // on CI this dies in a 180s boot timeout per engine — running it buys no signal.
-test.fixme('footprint editor browses + loads a real ingested footprint (read path / version cap)', async ({ page }) => {
+// Re-enabled 2026-08-13: the read path revived on the JSPI build (chromium).
+test(
+  'footprint editor browses + loads a real ingested footprint (read path / version cap)', async ({ page }) => {
+  test.skip(
+    test.info().project.name.includes('firefox'),
+    'FootprintEnumerate child rows never appear on Firefox within 60s — slow ' +
+      'wasm tier suspected (probed 2026-08-13); passes on chromium',
+  );
   const logs: string[] = [];
   page.on('console', (m) => logs.push(`[${m.type()}] ${m.text()}`));
   page.on('pageerror', (e) => logs.push(`[pageerror] ${e.message}`));
diff --git a/tests/web/footprint-write-remote.spec.ts b/tests/web/footprint-write-remote.spec.ts
index 8cd7ec7..e512e59 100644
--- a/tests/web/footprint-write-remote.spec.ts
+++ b/tests/web/footprint-write-remote.spec.ts
@@ -43,7 +43,10 @@ async function clickTreeRow(page: Page, label: string): Promise<boolean> {
   // KNOWN-BROKEN: the fp/sym editor kicadLibs enumerate/save flows are dead
   // (docs/features/web-e2e-rot/01-editor-lib-bridge-flows.md). fixme, not fail:
   // on CI this dies in a 180s boot timeout per engine — running it buys no signal.
-test.fixme('footprint editor save persists to the backend (remote write round-trip)', async ({ page }) => {
+// Probed 2026-08-13 on the JSPI build: still dead — wedges at the New Symbol/
+// Footprint dialog step on BOTH engines (web-e2e-rot 01 stands for writes).
+test.fixme(
+  'footprint editor save persists to the backend (remote write round-trip)', async ({ page }) => {
   const owner = `e2e-fp-${Date.now()}`;
   const logs: string[] = [];
   page.on('console', (m) => logs.push(`[${m.type()}] ${m.text()}`));
diff --git a/tests/web/footprint-write-spike.spec.ts b/tests/web/footprint-write-spike.spec.ts
index 7c90b74..c547860 100644
--- a/tests/web/footprint-write-spike.spec.ts
+++ b/tests/web/footprint-write-spike.spec.ts
@@ -34,7 +34,10 @@ async function bootFootprintEditor(page: Page): Promise<void> {
   // KNOWN-BROKEN: the fp/sym editor kicadLibs enumerate/save flows are dead
   // (docs/features/web-e2e-rot/01-editor-lib-bridge-flows.md). fixme, not fail:
   // on CI this dies in a 180s boot timeout per engine — running it buys no signal.
-test.fixme('footprint editor save routes through the pcbjam_fp write bridge (main thread)', async ({ page }) => {
+// Probed 2026-08-13 on the JSPI build: still dead — wedges at the New Symbol/
+// Footprint dialog step on BOTH engines (web-e2e-rot 01 stands for writes).
+test.fixme(
+  'footprint editor save routes through the pcbjam_fp write bridge (main thread)', async ({ page }) => {
   const logs: string[] = [];
   page.on('console', (m) => logs.push(`[${m.type()}] ${m.text()}`));
   page.on('pageerror', (e) => logs.push(`[pageerror] ${e.message}`));
diff --git a/tests/web/read-only-editor.spec.ts b/tests/web/read-only-editor.spec.ts
index 0b07a73..b245deb 100644
--- a/tests/web/read-only-editor.spec.ts
+++ b/tests/web/read-only-editor.spec.ts
@@ -231,7 +231,7 @@ test("a writer's edits stream into the viewer live (and never the reverse)", asy
   // for two fully WRITABLE tabs on a fresh kicad_editor build (the previous
   // CI artifacts were built at an older kicad rev). Un-fixme once the
   // envelope/parser mismatch is fixed on main.
-  test.fixme();
+  // fixme removed 2026-08-13: passes on the JSPI build (both engines):
 
   const itemId = await writer.evaluate(() =>
     (window as unknown as W).Module.kicadCollabTestSelectFirst(),
diff --git a/tests/web/symbol-write-remote.spec.ts b/tests/web/symbol-write-remote.spec.ts
index 6380512..4b64563 100644
--- a/tests/web/symbol-write-remote.spec.ts
+++ b/tests/web/symbol-write-remote.spec.ts
@@ -21,7 +21,10 @@ const BACKEND = process.env.BACKEND_URL ?? 'http://localhost:3060';
   // KNOWN-BROKEN: the fp/sym editor kicadLibs enumerate/save flows are dead
   // (docs/features/web-e2e-rot/01-editor-lib-bridge-flows.md). fixme, not fail:
   // on CI this dies in a 180s boot timeout per engine — running it buys no signal.
-test.fixme('symbol editor save persists to the backend (remote write round-trip)', async ({ page }) => {
+// Probed 2026-08-13 on the JSPI build: still dead — wedges at the New Symbol/
+// Footprint dialog step on BOTH engines (web-e2e-rot 01 stands for writes).
+test.fixme(
+  'symbol editor save persists to the backend (remote write round-trip)', async ({ page }) => {
   // Unique owner per run so the test is isolated from prior runs.
   const owner = `e2e-${Date.now()}`;
   const logs: string[] = [];
diff --git a/tests/web/symbol-write-spike.spec.ts b/tests/web/symbol-write-spike.spec.ts
index 4308be1..ba74824 100644
--- a/tests/web/symbol-write-spike.spec.ts
+++ b/tests/web/symbol-write-spike.spec.ts
@@ -31,7 +31,10 @@ async function bootSymbolEditor(page: Page): Promise<void> {
   // KNOWN-BROKEN: the fp/sym editor kicadLibs enumerate/save flows are dead
   // (docs/features/web-e2e-rot/01-editor-lib-bridge-flows.md). fixme, not fail:
   // on CI this dies in a 180s boot timeout per engine — running it buys no signal.
-test.fixme('symbol editor save routes through the pcbjam write bridge (main thread)', async ({ page }) => {
+// Probed 2026-08-13 on the JSPI build: still dead — wedges at the New Symbol/
+// Footprint dialog step on BOTH engines (web-e2e-rot 01 stands for writes).
+test.fixme(
+  'symbol editor save routes through the pcbjam write bridge (main thread)', async ({ page }) => {
   const logs: string[] = [];
   page.on('console', (m) => logs.push(`[${m.type()}] ${m.text()}`));
   page.on('pageerror', (e) => logs.push(`[pageerror] ${e.message}`));