Spagitty v0.4.1-alpha

The farm shipped in 0.4.0-alpha with the brand's amber on every palette and
the repository's state stacked in the rail. This is the pass over both.

Added

• Four more palette families. Nord (Snow Storm / Polar Night), Rosé Pine
  (Dawn / Moon), Solarized and Everforest, each in light and dark, bringing the
  set to eight families and sixteen palettes.

Changed

• Every theme now accents in its own hue. The palettes all wore the brand
  amber — #976317 in light, #eeb04d in dark — which put one colour on seven
  palettes built around a different one: an amber primary button in the middle
  of Dracula's purples, and a brown that read as muddy on every light
  background. Each family accents with a colour of its own now, contrast-checked
  the same way, and themes.test.ts fails if two families ever share one.
• The Farm is the rail's first screen, and the Graph follows it. The Graph
  still owns / and is still what the window opens on.
• Open repository leaves the rail once a repository is open. It was a filled
  accent button above every screen offering to replace the repository you were
  working in. The tab strip's +, the repository menu and All repositories all
  still open one.
• The repository's state moved from the rail's foot to the status strip. It
  was four lines stacked under the screens — the working-copy count, how fresh
  the walk and the remote were, tags and submodules — and two of them repeated
  counts the rail's own rows already carry as badges. It is one line along the
  bottom of the window now, between the identity and the licence, and the rail
  is navigation again. The line is two groups with a rule between them: what is
  changing (the walk, the working copy, the last fetch) and what is merely true
  (commits, tags, submodules), because reading them as one dot-separated run
  made "1 changed file" look like the same kind of fact as "Tags 42".
• The Farm's first screen is a starter page, not an empty state: what a farm
  is, the loop in four steps, a goal field that starts one without navigating
  anywhere, and three readiness rows — whether an agent was found, whether the
  repository has an AGENTS.md, and whether anything verifies the work.