Session d038468a: architect's plans compiled clean (3x) but plan grounding
then rejected them. The scaffold_frontend_project stage runs `npm create vite`
(allowed_tools [file_write, shell], touches [frontend/]) to create frontend/ +
package.json at run time. PlanGrounder only credited declared writes/
expectedFiles, so the scaffolder's generated files were invisible — it
false-rejected all three: frontend/ "doesn't exist", verify stage has "no
manifest". That rejects exactly the plan the architect prompt asks for ("use
the real scaffolder, don't hand-write package.json").
Credit a file_write-capable stage's declared `touches` scope as populated by
run time: it satisfies the build-manifest prerequisite and any scope (its own
or a later stage's) that overlaps it. Keyed on file_write (create-intent), NOT
shell, so a read-only shell stage — log inspection, test runs, grep — creates
nothing and does not wrongly credit its scope. Runtime precondition handling
(#167/#170) remains the backstop for a build whose prerequisite genuinely
never appears.
Tests: scaffolder case (mirrors the session) grounds; read-only shell stage
does NOT; existing "missing prerequisite" reject still holds.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Ly2mMnt9TCZbvhcC1JfuV
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