The /__forge/ door's "More pulls" line says how many and links to the open pulls (from branch scout/6411-…) #6438

Later: The repository is flow only (#5930, owner, 2026-10-26); this door fix serves P6 after the alarms stay clear.

Replaces #6411. The work is built on branch scout/6411-the-forge-door-s-more-pulls-are-open-lin (pull #6414). It met the review asks on its code: the old test/door-pulls.test.ts is kept, and env state is resolved only for the five pulls drawn.

Done when:

• [ ] That branch is rebased on main and opened as a pull: "N more open pulls" (or "N+" at the 50 read), linking to <forge>/<repo>/pulls for a reader, and the count only for a guest.
• [ ] test/door-more-pulls.test.ts, test/door-pulls.test.ts and test/apps-door.test.ts pass, and the door's CSP is unchanged.