fix(wasm): KiCad 10 kiplatform/libgit2 stubs, e2e fixtures, asyncify -g hook

- wasm/kiplatform: add EnableDarkMode, IO::TimestampDir, UI::AllowNetworkFileSystems,
  UI::CancelPendingScroll, SECRETS::DeleteSecret (new KiCad 10 functions).
- wasm/stubs/libgit2_stub.c: ~156 no-op stubs for KiCad 10's restructured git
  backend + git-backed local history + text_eval VCS.
- tests/kicad: bump the demo project dir 9.99 -> 10.0 (KiCad 10 stores projects
  under /home/kicad/documents/kicad/10.0/) — fixes load-pcb + 3d-viewer e2e.
- scripts/common/apply-asyncify.sh: ASYNCIFY_EXTRA_OPTS hook (e.g. -g for
  symbolizable wasm traces).
- kicad submodule -> ef00c2d3 (KiCad 10 link + runtime adaptations).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/kicad/3d-viewer.spec.ts

@@ -21,7 +21,8 @@ import { waitForPcbnew } from './utils/pcbnew-ready';
  * models — deferred), the viewer shows copper/silk/mask/edge geometry in 3D.
  */
 
-const KICAD_VERSION_DIR = '9.99';
+// KiCad 10 stores projects under /home/kicad/documents/kicad/10.0/projects.
+const KICAD_VERSION_DIR = '10.0';
 const PROJECT_DIR_MEMFS = `/home/kicad/documents/kicad/${KICAD_VERSION_DIR}/projects`;
 
 // pic_programmer frames correctly in the default 3D camera (the microwave demo

tests/kicad/load-pcb-probe.spec.ts

@@ -201,8 +201,8 @@ test.describe('PCB load probe', () => {
             '/home/kicad',
             '/home/kicad/documents',
             '/home/kicad/documents/kicad',
-            '/home/kicad/documents/kicad/9.99',
-            '/home/kicad/documents/kicad/9.99/projects',
+            '/home/kicad/documents/kicad/10.0',
+            '/home/kicad/documents/kicad/10.0/projects',
             '/tmp',
             '/workspace',
         ]);
@@ -238,7 +238,7 @@ test.describe('PCB load probe', () => {
 
         // Final check: re-dump MEMFS so we can confirm nothing changed under us
         await dumpMemfs(page, [
-            '/home/kicad/documents/kicad/9.99/projects',
+            '/home/kicad/documents/kicad/10.0/projects',
             '/tmp',
         ]);
 

tests/kicad/load-pcb.spec.ts

@@ -16,7 +16,7 @@ import { waitForBoardLoaded } from './utils/board-ready';
  *      if it appears — depends on whether MEMFS already has config).
  *   2. Inject the demo's .kicad_pcb (+ .kicad_pro for completeness) into
  *      MEMFS at PATHS::GetDefaultUserProjectsPath() — confirmed by
- *      load-pcb-probe.spec.ts to be /home/kicad/documents/kicad/9.99/projects/.
+ *      load-pcb-probe.spec.ts to be /home/kicad/documents/kicad/10.0/projects/.
  *   3. Drive File → Open via menu helpers.
  *   4. Click on the file row in wxFileListCtrl (wasm port doesn't register
  *      listctrl rows in wxElementRegistry, so we click by the filelist's
@@ -36,7 +36,9 @@ import { waitForBoardLoaded } from './utils/board-ready';
  * `features/<branch>/rtree-debug-findings.md` for the full trail.
  */
 
-const KICAD_VERSION_DIR = '9.99';
+// KiCad 10 stores projects under /home/kicad/documents/kicad/10.0/projects
+// (GetMajorMinorVersion() = "10.0"); the old WASM port used "9.99".
+const KICAD_VERSION_DIR = '10.0';
 const PROJECT_DIR_MEMFS = `/home/kicad/documents/kicad/${KICAD_VERSION_DIR}/projects`;
 
 type DemoCfg = {