fix(desktop): warm and isolate Vite dev renderer

[seekskyworld]

Summary

Fixes #4775

Dev launches now warm the Vite client entry and wait for its import graph to become idle before Electron starts. The main window clears the renderer session cache only for the Vite development entry, preventing stale immutable dependency generations from being combined with a fresh optimizer graph; packaged file:// launches keep their existing cache behavior.

Verification

• node --test apps/desktop/scripts/dev-renderer-warmup.test.mjs (2 passed)
• npm --workspace @maka/desktop run build:main (passed)
• node --test apps/desktop/dist/main/__tests__/main-renderer-loader.test.js (1 passed)
• npx tsc -p apps/desktop/tsconfig.main.json --noEmit (passed)
• npx biome lint on all changed files (passed)
• npm --workspace @maka/desktop run build:workspace-deps reaches the existing @maka/ui baseline type errors on current main; it is not green in this checkout.

AI use

• No generative tool made a substantive contribution
• Generative tooling made a substantive contribution

Tool(s) and scope: OpenAI Codex authored the implementation and tests, then ran the focused checks listed above.

Checklist

• Tests cover the change and fail without it
• Lint, format, typecheck and the affected suites pass locally

Does this PR entail a change in behavior?

• Yes — development launches now clear stale renderer cache and wait for Vite warmup before opening Electron.
• No

[seekskyworld]

Closing as duplicate after verifying the existing implementation in #4782. I will not compete with that PR.