Add the December 2026 summit page The Fall 2026 summit is set for December 2-3, announced on dev@. The new page carries the joining details, the call for talks (closes November 13) and the draft agenda. ATS Summit Planning now points to it, and the sidebar, Home and Summits link to it directly.
Move the next-summit draft to its own page and restore the May 2026 record The May 2026 page had been reworked into the plan for the next summit, which left no record of May 2026. The draft now lives on ATS Summit Planning, linked as Upcoming. Also add the Fall 2025 summit and the project's combined committer and PMC vote rule.