♻️ Move script-header rationale into development/

branch.sh, finish.sh, release.sh, runner-image.sh and release-notes.sh
carried multi-paragraph 'how we got here / rejected' essays in comments. They
now live in the matching development/ category file, and each script keeps a
one-line pointer so the rationale is single-homed and cannot drift.

scripts/release.sh

@@ -4,29 +4,13 @@ set -eu
 
 # Release front-door. Run as `npm run create:release`.
 #
-# How we got here (short): we want hand-written Keep-a-Changelog notes, an
-# [Unreleased] -> "## [x.y.z] - DATE" graduation, and a tag that marks the exact
-# commit on main that gets published. No single tool did BOTH the [Unreleased]
-# graduation AND the package.json bump. So split by strength: `pubv` (tiny,
-# changelog-driven) owns preflight + the interactive major/minor/patch heuristic
-# + graduating/committing CHANGELOG.md (no tag, no push); `npm version` syncs
-# package.json + the lockfile; `--amend` folds them into pubv's single commit;
-# tag AFTER the amend (so the tag is never orphaned) and push.
+# Graduates the [Unreleased] changelog notes, bumps package.json + the lockfile,
+# and commits then tags the exact SHA that CI publishes. The notes are finalized
+# in VS Code before pubv because pubv's bump heuristic reads the [Unreleased]
+# body.
 #
-# The notes are finalized in VS Code *before* pubv: the [Unreleased] body is
-# what pubv's bump heuristic reads, so editing afterwards would inform the
-# changelog only, not the version choice. pubv refuses a dirty tree, so that
-# edit is committed as a staging commit and folded back into the single release
-# commit below.
-#
-# Rejected: the conventional-commits family (our history is gitmoji, not
-# Conventional; and we want hand-written notes); changesets/rtk (config + a
-# heavier version/publish flow that fights our CI-only publish); knope/kacl/
-# bestikk (changelog-only — don't bump package.json; plus 5yr/2yr/brand-new
-# maintenance); pubv alone (verified it never writes package.json). We also
-# tried `versions` (silverwind) — great Gitea support — but pairing it with a
-# hand-rolled promote became a ~180-line script we'd have to maintain, which is
-# exactly what this ~30-line version replaces.
+# Tooling rationale, the rejected alternatives, and the version source of truth:
+# development/publishing.md.
 
 CHANGELOG="CHANGELOG.md"
 BASE="main"