feat(desktop): notify renderer when GPU acceleration is disabled due to remote display

[sprmn24]

What does this PR do?

When Hermes Desktop detects a remote display (RDP, SSH X11-forwarding), it silently disables GPU hardware acceleration to prevent Chromium compositor flicker. The detection and disable already worked correctly, but the renderer had no way to know — only a console.log was written to the main process log.

This PR surfaces that information to the user via a dismissible banner:

• Adds hermes:get-remote-display-reason IPC handler in main.cjs returning the already-computed REMOTE_DISPLAY_REASON string (or null in normal sessions)
• Exposes it via preload.cjs as window.hermesDesktop.getRemoteDisplayReason()
• Adds getRemoteDisplayReason? to the hermesDesktop type in global.d.ts
• New <RemoteDisplayBanner /> component: calls the IPC on mount, shows a dismissible Alert only when reason is non-null — e.g. "Software rendering active — RDP session detected. GPU acceleration is disabled to prevent flickering."
• Rendered at shell root in desktop-controller.tsx alongside other overlays (same pattern as NotificationStack)
• i18n key remoteDisplayBanner added to en.ts, types.ts, zh.ts, zh-hant.ts, and ja.ts

In a normal local session REMOTE_DISPLAY_REASON is null and the banner never renders — zero overhead for the common case.

Related Issue

Related: #37932 (merged — detects remote displays and disables GPU acceleration to stop flicker; this PR surfaces that already-computed reason to the renderer, the user-facing layer #37932 lacked) and #45341 (open — Windows GPU crash --no-angle + HERMES_DESKTOP_DISABLE_GPU, complementary mechanism).

Type of Change

• ✨ New feature

Changes Made

• apps/desktop/electron/main.cjs — add hermes:get-remote-display-reason IPC handler
• apps/desktop/electron/preload.cjs — expose getRemoteDisplayReason
• apps/desktop/src/global.d.ts — type declaration
• apps/desktop/src/components/remote-display-banner.tsx — new dismissible banner component
• apps/desktop/src/app/desktop-controller.tsx — render banner at shell root
• apps/desktop/src/i18n/en.ts — banner i18n strings
• apps/desktop/src/i18n/types.ts — i18n type definitions
• apps/desktop/src/i18n/zh.ts, zh-hant.ts, ja.ts — translations

How to Test

1. On Windows, open an RDP session and launch Hermes Desktop — banner should appear with the RDP reason
2. On Linux, SSH with X11 forwarding (ssh -X) and launch — banner should appear with ssh-session reason
3. In a normal local session — banner should not appear
4. Set HERMES_DESKTOP_DISABLE_GPU=1 — banner should appear with override reason
5. Click dismiss — banner disappears for the session
6. node --check and tsc --noEmit both pass clean

Checklist

• Contributing Guide read
• Conventional Commits format
• Duplicate PR check done (no existing PR surfaces remote-display reason to renderer)
• node --check apps/desktop/electron/main.cjs && node --check apps/desktop/electron/preload.cjs passed
• npx tsc --noEmit passed clean
• Platform: Windows 11 + WSL2 Ubuntu

[alt-glitch]

Related: #37932 (merged — detects remote displays and disables GPU acceleration to stop flicker; this PR surfaces that already-computed reason to the renderer, the user-facing layer #37932 lacked) and #45341 (open — Windows GPU crash --no-angle + HERMES_DESKTOP_DISABLE_GPU). Same desktop GPU-handling area, complementary mechanisms.

[teknium1]

Merged via #49310 — your commit was cherry-picked onto current main with your authorship preserved in git history (commit 8ebe37f). Thanks for completing the user-facing layer #37932 was missing!