tui: enable password authentication for remote session attachment

Allow users to authenticate when attaching to a remote OpenCode session by supporting basic auth via a password flag or OPENCODE_SERVER_PASSWORD environment variable

packages/opencode/src/cli/cmd/tui/app.tsx

@@ -104,6 +104,7 @@ export function tui(input: {
   args: Args
   directory?: string
   fetch?: typeof fetch
+  headers?: RequestInit["headers"]
   events?: EventSource
   onExit?: () => Promise<void>
 }) {
@@ -130,6 +131,7 @@ export function tui(input: {
                         url={input.url}
                         directory={input.directory}
                         fetch={input.fetch}
+                        headers={input.headers}
                         events={input.events}
                       >
                         <SyncProvider>