Summary

• Adds a "Prefer TCP connection" network setting, default off, passed as preferYamuxTransport in AccountCreate/AccountSelect RPC requests.


• Available in two places:
  
  
  • The pre-auth Preferences popup (next to the Network dropdown)
  
  
  • Settings > Preferences > Advanced (in the authorized app)
  
  
  
  


• An info icon next to the toggle shows a hover hint explaining the setting (UDP being blocked can cause connection problems; this switches to prefer TCP).


• Changing the in-app Advanced toggle requires reconnecting the account to take effect, so it confirms with the user ("Restart Required") before applying: it persists the new setting, calls AccountStop, then reloads the app (which re-authenticates and calls AccountSelect again with the updated config).


• Also fixes a pre-existing bug in the shared Preview.tooltipShow utility: "big" tooltips positioned below their anchor could run past the bottom of the window with no clamp/flip (unlike Menu's positioning, which already handles this). Now mirrors Menu's flip-then-clamp behavior on the y-axis.

Linear

JS-9867

Test plan

• 
  bun run typecheck and bun run lint pass


• Manually verified: toggle in the pre-auth popup persists via networkConfigSet; toggle in Settings > Advanced shows the restart-required confirm, then reconnects


• Manually verified the tooltip clipping fix by triggering the hint near the bottom of the Settings > Advanced window

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