v2.6.0

Changed

• Fettler has moved to its own repository. The file, search and edit
  tools for AI assistants now live — and release — at
  shoddy-fettler, with
  documentation at
  shoddymills.github.io/shoddy-fettler.
  This repository no longer ships fettle; every Fettler link in the docs
  points at the new home.
• Releases are made differently now. The tag is the version: the
  Release workflow stamps the number from the tag, so there is no
  version-bump commit and no release branch — a release is cut from main
  after a pull request CI has proven. The maintainer procedure is
  WORKFLOW.md,
  the reasoning
  RELEASING.md.
• ./build.ps1 check (and the build.sh twin) is a new verb running the
  seven fast verify gates — docs, errors, permissions, host-blind, suites,
  twins, lanes — in seconds; ./build.ps1 test remains the whole suite.
  The Toolchain page
  documents the full verb set.
• ./scripts/shoddy-status.ps1 says where a piece of work has got to — the
  branch and whether it is clean, how far it sits from main, whether it
  has been pushed, the state of its pull request, CI's verdict on the
  commit, whether the release notes for a version exist and are committed,
  and whether that tag is still free — then names the single command that
  comes next. It is the one script here that reports rather than acts: the
  only thing it writes is the remote-tracking refs it fetches, and it
  always exits 0, because a status tool that fails on incomplete work
  becomes a gate. ./scripts/shoddy-status.sh is the twin.

Fixed

• The julian, ephemeris and clock core suites ran only in the
  retired release gate, never in ./build.ps1 test. The suite roster is
  now a single copy (scripts/suites.mjs) read by the build, the display
  runner and the verify gate alike, so a suite can no longer fall between
  them.
• New .ps1 scripts were committed without their execute bit.
  scripts/shoddy-commit.* staged the bit on new .sh files only, while
  verify-permissions.js applies it to every tracked file that opens
  #! — so a new PowerShell script fell straight through the window the
  .sh case exists to close. Six had, and are corrected here. Both twins
  now test the shebang, which is the rule the gate itself applies.