fix(startup): create config directory before singleton lock (#242)

docs/architecture/README.md

@@ -40,3 +40,7 @@ The desktop app keeps `src/main.ts` as composition root and pushes behavior into
 - Composition over monoliths
 - Pure helpers where possible
 - Stable user behavior while internals evolve
+
+Startup resolves and creates the user-data directory in `src/main-entry-runtime.ts`
+before the entry process requests Electron's single-instance lock. Main-process
+config bootstrap then writes the default config only when no config file exists.

docs/workflow/verification.md

@@ -23,6 +23,8 @@ Read when: selecting the right verification lane for a change
   there instead of copying them into caller workflows.
 - The reusable gate installs Lua and runs `bun run test:env`, so the shipped mpv
   plugin tests run for every pull request and tagged release.
+  Lua installation uses only the runner's Ubuntu package sources so unrelated
+  third-party repository failures do not block the gate.
 
 ## Default Handoff Gate