feat(config): add macOS vibrancy state setting

[zelenskymike]

Summary

• add an optional window:visualeffectstate setting with followWindow, active, and inactive values
• pass the validated value to Electron's BaseWindow when macOS vibrancy is enabled
• document the setting and update the generated config schema and types

Motivation

Electron defaults visualEffectState to followWindow, which changes the vibrancy backdrop to its inactive appearance whenever the Wave window loses focus. For translucent window configurations, this can make the blur appear to disappear when switching to another app.

This setting lets users opt into active so the native vibrancy backdrop remains visually consistent across focus changes. Existing behavior is unchanged when the setting is omitted or invalid: Wave uses followWindow.

{
  "window:blur": true,
  "window:visualeffectstate": "active"
}

The setting is macOS-only and is ignored on Windows and Linux. Windows keeps its existing acrylic material behavior; no cross-platform defaults change.

Validation

• npm test -- --run — 14 test files, 46 tests passed
• npm exec eslint -- emain/emain-window.ts
• go test ./pkg/wconfig
• git diff --check
• packaged an arm64 macOS app with Electron 41.1.0 and verified its ad-hoc signature
• manually verified that active preserves native vibrancy after moving focus to another application

Scope

This PR intentionally does not add new vibrancy materials or alter fullscreen behavior. It exposes only Electron's existing visual-effect activity state as a focused, opt-in configuration option.

[CLAassistant]

All committers have signed the CLA.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 6ebcbe73-58a4-49c4-ad60-e44ce22f053d

📥 Commits

Reviewing files that changed from the base of the PR and between a4447c1 and 7a38990.

📒 Files selected for processing (6)

• docs/docs/config.mdx
• emain/emain-window.ts
• frontend/types/gotypes.d.ts
• pkg/wconfig/metaconsts.go
• pkg/wconfig/settingsconfig.go
• schema/settings.json

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Walkthrough

Adds the window:visualeffectstate configuration key with followWindow, active, and inactive values across Go settings, frontend types, constants, and JSON schema. On macOS, blurred windows now apply the configured visual effect state, defaulting to followWindow for other values. Documentation describes the macOS-only behavior and restart requirements.

Estimated code review effort: 2 (Simple) | ~10 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly matches the main change: adding a macOS vibrancy state setting.
Description check	✅ Passed	The description accurately covers the setting, its behavior, and the related schema/type updates.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

Warning

There were issues while running some tools. Please review the errors and either fix the tool's configuration or disable the tool if it's a critical failure.

🔧 Biome (2.5.5)

frontend/types/gotypes.d.ts

File contains syntax errors that prevent linting: Line 1880: Expected a property, or a signature but instead found '#'.; Line 1880: Expected an expression, or an assignment but instead found ':'.; Line 1880: Expected an expression but instead found ']'.; Line 2193: Expected a statement but instead found '}'.

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