adopt-project.py: what execute and AGENTS.md say around a run (the plan's follow-up, a failed verification's open PR, an answer with no resolution:, the ruleset hint) #523

Four places where adopt's printed text, or AGENTS.md about it, says something the tool does not do. One wording change over adopt-project.py, AGENTS.md and the tests that pin the text.

From the v1.1.0 triage of the v1.0.0 known limits on #457 and #459. One pull request covers the lines below.

Lines

• N1: follow-up "open the split as a pull request… legs are seeded" goes into the plan and PR body, though execute opens the PR. Where: adopt-project.py follow-ups, _split_message. Effort S; all. On main 3121945: The text at adopt-project.py:1676-1679 is unchanged and listed under "FOLLOW-UPS, which this commit does NOT do" (:7931). (source)
• auA-12: a failed verification in GitHub mode leaves an open PR; the exit-1 text and AGENTS.md say the source is untouched. Where: adopt-project.py _finish_by_hand, AGENTS.md:146-149. Effort S; all. On main 3121945: The PR is still opened before _verify (adopt-project.py ~7610-7621), _finish_by_hand says nothing when the run failed and the PR is open, and AGENTS.md is unchanged. (source)
• N3: AGENTS.md says an answer with no resolution: "will be read as a finding", but check says plan ok. Where: AGENTS.md:135, check. Effort S; all. On main 3121945: AGENTS.md:135 is unchanged, and check never asks for a resolution: (it is read only for the submodule record). (source)
• adopt's ruleset hint still offers "the scaffold's other exit, a seed branch and a pull request", removed by scaffold-project.py and family.py init: --reuse-empty-repo reuses a leg that is empty or whose one commit is the scaffold's own seed, and the ruleset hint offers that re-run, by an operator holding the bypass right, as its one exit, so a project a ruleset refused part-way is finished by one re-run, not refused scaffold-remote-exists for its own legs or sent to a pull request with no base (#462) #506. Where: adopt-project.py ADOPT_RULESET_HINT (:6045); tests/test_ruleset_hint_tracking_branch.py:115. Effort S; all. On main 3121945: The sentence is still at adopt-project.py:6045, and the test still pins it at :115. (source)

Rides along (backlog; tick it here if the same change covers it)

• N2: under --local-remote-dir, NEXT still says "review the pull request" (source)

Note: #457's N5 line was closed as a duplicate of auA-12, which is here.

Each line above is marked → this issue on its tracking issue. Tick it there too when this closes.