…indowServer GPU load (#48376)

fix: macOS stop overriding private cornerMask API to fix WindowServer GPU load spike

Electron fetched a custom `_cornerMask` for `ElectronNSWindow` to smooth
vibrancy corners. On macOS 15 (Tahoe) that private hook forces the window
shadow to be rendered from a fully transparent surface, causing the
WindowServer GPU load regression. Remove the `cornerMask` property and
the `_cornerMask` override so we stay on Apple’s default shadow path.

Co-authored-by: avarayr <[email protected]>

…indowServer GPU load (#48376)

fix: macOS stop overriding private cornerMask API to fix WindowServer GPU load spike

Electron fetched a custom `_cornerMask` for `ElectronNSWindow` to smooth
vibrancy corners. On macOS 15 (Tahoe) that private hook forces the window
shadow to be rendered from a fully transparent surface, causing the
WindowServer GPU load regression. Remove the `cornerMask` property and
the `_cornerMask` override so we stay on Apple’s default shadow path.

Co-authored-by: avarayr <[email protected]>

…indowServer GPU load (#48376)

fix: macOS stop overriding private cornerMask API to fix WindowServer GPU load spike

Electron fetched a custom `_cornerMask` for `ElectronNSWindow` to smooth
vibrancy corners. On macOS 15 (Tahoe) that private hook forces the window
shadow to be rendered from a fully transparent surface, causing the
WindowServer GPU load regression. Remove the `cornerMask` property and
the `_cornerMask` override so we stay on Apple’s default shadow path.

Co-authored-by: avarayr <[email protected]>

…indowServer GPU load (electron#48376)

fix: macOS stop overriding private cornerMask API to fix WindowServer GPU load spike

Electron fetched a custom `_cornerMask` for `ElectronNSWindow` to smooth
vibrancy corners. On macOS 15 (Tahoe) that private hook forces the window
shadow to be rendered from a fully transparent surface, causing the
WindowServer GPU load regression. Remove the `cornerMask` property and
the `_cornerMask` override so we stay on Apple’s default shadow path.

Upgrades Electron from 34.5.1 to 38.6.0 to resolve excessive WindowServer
GPU usage on macOS 26 (Sequoia). This issue was caused by Electron's
override of the private _cornerMask API, which forced the compositor to
treat window masks as dynamic rather than static, resulting in persistent
high GPU load.

Changes:
- Upgrade electron: 34.5.1 → 38.6.0
- Upgrade electron-mksnapshot: 34.5.1 → 38.6.0
- Upgrade @electron/rebuild: ^3.7.1 → ^3.7.2
- Upgrade node-abi: ^3.67.0 → ^3.81.0 (required for Electron 38 support)

The fix was introduced in Electron 36.9.2, 37.6.0, 38.2.0, and all later
versions. We're upgrading to 38.6.0 as it's the latest stable version
compatible with Node 20.11.0.

Fixes: electron/electron#48376

…indowServer GPU load (electron#48376)

fix: macOS stop overriding private cornerMask API to fix WindowServer GPU load spike

Electron fetched a custom `_cornerMask` for `ElectronNSWindow` to smooth
vibrancy corners. On macOS 15 (Tahoe) that private hook forces the window
shadow to be rendered from a fully transparent surface, causing the
WindowServer GPU load regression. Remove the `cornerMask` property and
the `_cornerMask` override so we stay on Apple’s default shadow path.

…indowServer GPU load (electron#48376)

fix: macOS stop overriding private cornerMask API to fix WindowServer GPU load spike

Electron fetched a custom `_cornerMask` for `ElectronNSWindow` to smooth
vibrancy corners. On macOS 15 (Tahoe) that private hook forces the window
shadow to be rendered from a fully transparent surface, causing the
WindowServer GPU load regression. Remove the `cornerMask` property and
the `_cornerMask` override so we stay on Apple’s default shadow path.

…indowServer GPU load (electron#48376)

fix: macOS stop overriding private cornerMask API to fix WindowServer GPU load spike

Electron fetched a custom `_cornerMask` for `ElectronNSWindow` to smooth
vibrancy corners. On macOS 15 (Tahoe) that private hook forces the window
shadow to be rendered from a fully transparent surface, causing the
WindowServer GPU load regression. Remove the `cornerMask` property and
the `_cornerMask` override so we stay on Apple’s default shadow path.

* Fix macOS 26 GPU performance issue by upgrading to Electron 38

Upgrades Electron from 34.5.1 to 38.6.0 to resolve excessive WindowServer
GPU usage on macOS 26 (Sequoia). This issue was caused by Electron's
override of the private _cornerMask API, which forced the compositor to
treat window masks as dynamic rather than static, resulting in persistent
high GPU load.

Changes:
- Upgrade electron: 34.5.1 → 38.6.0
- Upgrade electron-mksnapshot: 34.5.1 → 38.6.0
- Upgrade @electron/rebuild: ^3.7.1 → ^3.7.2
- Upgrade node-abi: ^3.67.0 → ^3.81.0 (required for Electron 38 support)

The fix was introduced in Electron 36.9.2, 37.6.0, 38.2.0, and all later
versions. We're upgrading to 38.6.0 as it's the latest stable version
compatible with Node 20.11.0.

Fixes: electron/electron#48376

* Use optional chaining

Signed-off-by: Philip Peterson <[email protected]>

---------

Signed-off-by: Philip Peterson <[email protected]>
Co-authored-by: Philip Peterson <[email protected]>