♻️ Group workflow scripts under a create: prefix

`branch` and `release` were bare commands, but bare in this repo means
"how you invoke a tier" or "runs one tool" — neither fits a command that
opens or closes a unit of work. They get their own prefix now, since a
prefix is how this repo records _when_ a script runs.

`create:` because both members genuinely create something (a branch, a
release) and it is a plain verb rather than VCS slang. No bare `create`
aggregator: running "all the workflows" describes nothing anyone wants,
and `publish:*` already precedents a prefix without one.

The rule "reuse an existing prefix, never invent one" now says what it
actually means: a new prefix is allowed when the scripts belong in the
pipeline, provided it enters both lists in the same commit as its first
member. That is the lesson from `use:`, which is referenced by prose yet
in none of the lists — already tracked in backlog.tasks.

The bare-command sentence shrinks to `build`, `clean`, `verify`.

package.json

@@ -49,8 +49,8 @@
         "fix": "npm run fix:oxlint && npm run fix:oxfmt",
         "fix:oxfmt": "oxfmt ${LEFTHOOK_FILES:-.}",
         "fix:oxlint": "oxlint --fix src",
-        "branch": "./scripts/branch.sh",
-        "release": "./scripts/release.sh",
+        "create:branch": "./scripts/branch.sh",
+        "create:release": "./scripts/release.sh",
         "maintain": "npm run maintain:knip; npm run maintain:outdated",
         "maintain:knip": "knip --include dependencies,exports,files",
         "maintain:outdated": "check-outdated --ignore-pre-releases",