Leader 1.9.0: projects first, updates, Esc closes everything

Highlights

• Projects first, like an IDE: Leader asks which project to open when it starts (or reopens the last one, or shows the
  start screen: your choice), leader <folder> opens that folder, and starting inside a repo opens that repo. The picker
  keeps its facts and the list it found on disk, reads git in the background one folder at a time, pins projects (p),
  and a Yazi-like browser (b: h up, l in, Enter opens) walks your folders.
• Updates, connected: a ↑ 1.9.0 badge in the bar and a line at the top of the logo's menu when a newer version
  exists; a page shows what changed version by version and updates on request (the config with git pull --ff-only, the
  app through its installer). One tiny request, never more often than every 12 hours, never updates by itself.
• Recent files that belong to the project you are in, not everything you ever opened (Ctrl+A widens it).
• Esc closes whatever is extra: help, quickfix, panels, floats, pickers (from insert too), lone tabs; never the last
  window. The hidden cursor has one owner list now, so it can no longer stay invisible after pages overlap.
• Install progress in numbers: every language tool with its state, time, bytes and speed, a bar, and a warning
  when data stops arriving. The window remembers its size, place and maximized state; the frame is yours to pick.
• Speed: hovering never scrolls a list, hovers are coalesced, Telescope no longer leaks a buffer per open, streaming
  answers redraw at most every 40 ms, and a list that fails to open leaves nothing behind.

Features

• gui: projects first, a folder browser, install progress, Esc (e9ccc65)
• app: keep the window's size, place and maximized state (fd876ef)
• ui: one owner list for the hidden cursor, Esc closes extra windows (0157e10)
• update: detect new versions, show the changelog, update on request (3eac257)
• recent: recent files that belong to the project you are in (9ac6d49)