Submit framed every run the same way — a "Stack to submit:" header and a
per-branch tree — regardless of whether there was a real stack to show.
The output now adapts to where submit is run from:

• A lone branch off trunk reads as a single PR ("name → base"), dropping
  the stack header, the "Submitting 1 branch" count, the per-row branch
  name, and the "Pull requests" list in favor of a bare ref + URL.
• A real stack keeps the stack framing, now annotated with its base
  ("Stack to submit → main") and aligned action columns.
• Running submit while checked out on trunk surfaces a distinct outcome
  (OutcomeOnTrunk) that points at creating or checking out a branch,
  rather than a bare "No branches to submit".

The plan snapshot already carries the branch set, current branch, and
trunk, so the shape is known before the first plan line streams in.

Stack

• PR fix(submit): compact submit progress output #935
  • PR fix(submit): persist per-branch failures after the submit TUI exits #1189
    • PR refactor(submit): remove dead stack-tree rendering from submit TUI #1190
      • PR fix(submit): persist the plan view when nothing is submitted #1194
        • PR fix(submit): tidy non-TTY submit output #1195
          • PR feat(submit): defer the submit TUI until the submission phase begins #1196
            • PR fix(submit): tighten submit output and surface swallowed warnings #1197
              • PR feat(submit): tailor submit output to stack shape #1270 👈
                • PR feat(submit): group submit plan output #1271

_{Auto-generated by Stackit}