Merge origin/main into dev (second round)

Resolve 21 conflicts from latest main (provider profiles, Windows fixes, 0.1.55-rc.1).
Fix all type errors and syntax issues from merge artifacts.

packages/app/e2e/helpers/workspace-lifecycle.ts

@@ -1,8 +1,5 @@
 import { expect, type Page } from "@playwright/test";
-import {
-  clickNewChat,
-  clickTerminal,
-} from "./launcher";
+import { clickNewChat, clickTerminal } from "./launcher";
 import { setupDeterministicPrompt, waitForTerminalContent } from "./terminal-perf";
 
 function terminalSurface(page: Page) {