v3.1.2

What's Changed

• Merge main back into develop after v3.1.1 by @tig in #241
• fix(tui): park cursor below the prompt after headless wp commands by @tig in #242
• chore(mermaid): switch default backend back to service (mermaid.ink) by @tig in #243
• docs: restore web edits to demo.md and users-guide.md clobbered by #243 by @tig in #246
• fix(markdown): serialize RenderAsync — concurrent re-renders tore the render; regen TUI hero on the Mermaid beat by @tig in #248
• fix(tui): bypass Terminal.Gui for headless wp print/gui (#240) by @tig in #250
• feat(print): wp print --pdf writes a PDF directly, no printer (#247) by @tig in #249

Full Changelog: v3.1.1...v3.1.2