feat(config): unify mpv plugin options under main config and add CSS/Ani

- Replace subminer.conf plugin config with mpv.* fields in config.jsonc
- Add socketPath, backend, autoStartSubMiner, pauseUntilOverlayReady, aniskipEnabled/buttonKey, subminerBinaryPath to mpv config
- Add subtitleSidebar.css field; migrate legacy sidebar appearance fields
- Add paintOrder and WebkitTextStroke to subtitle style options
- Update default subtitle/sidebar fontFamily to CJK-first stack
- Fix overlay visible state surviving mpv y-r restart
- Fix live config saves applying subtitle CSS immediately to open overlays
- Migrate legacy primary/secondary subtitle appearance into subtitleStyle.css on load
- Switch AniSkip button key setting to click-to-learn key capture

launcher/aniskip-metadata.ts

@@ -567,9 +567,11 @@ export function buildSubminerScriptOpts(
   logLevel: LogLevel = 'info',
   extraParts: string[] = [],
 ): string {
+  const hasBinaryPath = extraParts.some((part) => part.startsWith('subminer-binary_path='));
+  const hasSocketPath = extraParts.some((part) => part.startsWith('subminer-socket_path='));
   const parts = [
-    `subminer-binary_path=${sanitizeScriptOptValue(appPath)}`,
-    `subminer-socket_path=${sanitizeScriptOptValue(socketPath)}`,
+    ...(hasBinaryPath ? [] : [`subminer-binary_path=${sanitizeScriptOptValue(appPath)}`]),
+    ...(hasSocketPath ? [] : [`subminer-socket_path=${sanitizeScriptOptValue(socketPath)}`]),
     ...extraParts.map(sanitizeScriptOptValue),
   ];
   if (logLevel !== 'info') {