Cardano Updates

turtle ^>= 1.6.x requires optparse-applicative < 0.19, conflicting with
the rest of the project. allow-newer would satisfy the solver but turtle
1.6.x fails to compile against 0.19 because of the breaking Doc type
change (ansi-wl-pprint -> prettyprinter).

Replace turtle usage with standard IO:
- Shell monad -> plain list IO with mapM/concat
- options/optPath/argPath/argText -> execParser/strOption/argument directly
- Pattern URL parser -> Text.breakOn/stripPrefix in Maybe monad
- printf/format -> Text concatenation and hPutStrLn stderr
- die -> exitFailure helper

Also drops foldl and prettyprinter which were only needed via turtle.

- Rewrites RELEASE.md to reflect the actual release process: Intersect
  ownership, named sign-offs with two-stage pre-release/full-release gate
  (SRE now required for pre-release), component team table, honest 4-8 week
  cadence, dedicated testing section (continuous vs final integration vs
  performance), and updated versioning notes (no -pre tag suffix, GitHub
  release type determines pre/full status).
- Adds Ensurable Systems alongside IOG and Tweag as contributing organisations.
- Converts scripts/generate-release-changelog-links.hs from a cabal script
  into a proper cabal executable package so nix devshell users get a
  generate-release-changelog-links binary without running the script manually.
- Wires the new exe into the devshell via nix/haskell.nix nativeBuildInputs.
- Updates nix build instructions from plan-nix.json to plan-nix, noting
  result-json as the extra output.
- Wraps RELEASE.md prose to 80 columns.

cardano-recon: replace positional FILE/FILES args with named --formulas/--traces (v1.2.1)

- Separates cost models from the rest of the parameters
- Uses an object for the cost model instead of an array

Changed api srp to IntersectMBO

Were removed when the node only started considering valid what mainnet shipped with

- Separates cost models from the rest of the parameters
- Uses an object for the cost model instead of an array