fix(init): Change Nushell init for nu 0.60 (#3773)

src/init/starship.nu

@@ -1,8 +1,17 @@
 let-env STARSHIP_SHELL = "nu"
 let-env STARSHIP_SESSION_KEY = (random chars -l 16)
+let-env PROMPT_MULTILINE_INDICATOR = (^::STARSHIP:: prompt --continuation)
 
-def starship_prompt [] {
+# Does not play well with default character module.
+# TODO: Also Use starship vi mode indicators?
+let-env PROMPT_INDICATOR = ""
+
+let-env PROMPT_COMMAND = {
     # jobs are not supported
-    # status is not supported
-    ^::STARSHIP:: prompt --cmd-duration $nu.env.CMD_DURATION_MS
+    ^::STARSHIP:: prompt --cmd-duration $env.CMD_DURATION_MS --status $env.LAST_EXIT_CODE
 }
+
+# Not well-suited for `starship prompt --right`.
+# Built-in right prompt is equivalent to $fill$right_format in the first prompt line.
+# Thus does not play well with default `add_newline = True`.
+let-env PROMPT_COMMAND_RIGHT = {''}