fix(profile): declare a setup command so the build gate installs deps first

QA runs clear frontend/ before each run, taking node_modules with it. With
#263 making the terminal build gate actually fire, the gate would fail on
absent dependencies instead of on the code it exists to verify.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

.correx/project.toml

@@ -18,6 +18,10 @@ epic-status = "bash scripts/epic-status.sh"
 # The gate runner is whitespace-split / no-shell and runs at workspace_root (the repo), so `--prefix
 # frontend` targets the Node subproject without a `cd`. `npm run build` = `tsc && vite build` (npm's
 # own shell handles the &&), which fails on a dangling asset import — exactly the COMPLETED-lie hole.
+# QA runs clear frontend/ before each run, so node_modules is absent when the terminal build gate
+# fires. Without this the gate fails on missing deps instead of on the code it exists to verify.
+# `install`, not `ci`: a fresh scaffold has no package-lock.json yet.
+setup = "npm --prefix frontend install"
 typecheck = "npm --prefix frontend run build"
 build = "npm --prefix frontend run build"
 test = "npm --prefix frontend test"