feat(desktop): OSC debugging moves into Output, and looks stay in the show UI

[pyramation]

Summary

Three sidebar destinations disappear, one gains a tab.

Route loses nova, osc and traffic, so those hashes are no longer routes at all:

-  { id: 'run', label: 'Run', routes: ['show', 'nova', 'status'] },
+  { id: 'run', label: 'Run', routes: ['show', 'status'] },
-  { id: 'advanced', routes: ['devices', 'access', 'osc', 'traffic', 'settings'] }
+  { id: 'advanced', routes: ['devices', 'access', 'settings'] }

• Nova lives only in the artist UI's own tabs (the show screen's embedded UI), which is where an artist reaches for looks. The shell's standalone panel and the nova:* IPC that backed it are gone.
• OSC debugging becomes Output → Advanced: the question it answers ("why is nothing lighting up?") is a question about Output's target, so OscRoute is now OscPanel, rendered by OutputRoute inside a tab. The panel only mounts when that tab is opened, so it still probes nothing until asked.
• Traffic leaves the app entirely — packet capture is protocol archaeology, and tools/traffic remains as terminal tooling. Its renderer route, main-process module and IPC surface (traffic:*, and the Traffic* types) are removed with it; the desktop app no longer looks for Wireshark at all.

OutputRoute gains status because the panel needs it to warn when the project being debugged isn't the one running:

<TabsContent value='advanced'>
  <OscPanel activeProject={activeProject} status={status} />
</TabsContent>

Unrelated but in the same breath, from a request while this was in flight: the artist UI's parameters panel now defaults to the right of the grid instead of underneath it, and the choice is remembered (wavegrid-panel-layout) rather than resetting to bottom each load.

Docs that pointed at Advanced → OSC or the Traffic tab now point at Output → Advanced or the terminal.

Link to Devin session: https://app.devin.ai/sessions/ec43152136134467a853ec0bbf783ea9
Requested by: @pyramation

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment, CI, and merge conflict monitoring