Fail interrupted groundings at boot and bound hand grounding

At boot, after the job runner fails the jobs a previous process left
running, FailInterruptedGroundings sets every dinner still pending with
no ground_dinner job queued or running to failed (interrupted). A crash
mid-job, or between saving a dinner and enqueuing its job, no longer
leaves the dinner pending forever.

A search failure on recipe-candidates or ground now logs only the reason
code search_failed, never the wrapped error, which may quote the
provider; the response stays redacted.

When the grounding job cannot be enqueued, POST /dinners answers 201
with the saved dinner failed (grounding_error) and grounding_job_id
null, instead of a 500 that hid the dinner it had created.

Grounding a candidate or link by hand runs under a 90-second deadline
(fetch, photo, normalize_recipe); past it the request answers 504
ground_timeout and the dinner is unchanged.

Maestro task: 0cbaa5bf-8be4-4cbd-aab2-891e7f1bc2b5

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/db/dinners.sql.go

@@ -129,6 +129,38 @@ func (q *Queries) CreateDinner(ctx context.Context, arg CreateDinnerParams) (Din
 	return i, err
 }
 
+const failOrphanedPendingDinnerGroundings = `-- name: FailOrphanedPendingDinnerGroundings :execrows
+UPDATE dinners
+SET grounding_status = 'failed',
+	grounding_error = ?1,
+	updated_at = ?2
+WHERE grounding_status = 'pending'
+	AND NOT EXISTS (
+		SELECT 1 FROM jobs
+		WHERE jobs.kind = ?3
+			AND jobs.status IN ('queued', 'running')
+			AND json_extract(jobs.payload, '$.dinner_id') = dinners.id
+	)
+`
+
+type FailOrphanedPendingDinnerGroundingsParams struct {
+	GroundingError sql.NullString
+	UpdatedAt      string
+	Kind           string
+}
+
+// Fails every dinner still pending whose grounding job is no longer queued
+// or running: the process stopped before the job, or before its handler
+// recorded a result. Run at boot, after the job runner fails the jobs a
+// previous process left running.
+func (q *Queries) FailOrphanedPendingDinnerGroundings(ctx context.Context, arg FailOrphanedPendingDinnerGroundingsParams) (int64, error) {
+	result, err := q.db.ExecContext(ctx, failOrphanedPendingDinnerGroundings, arg.GroundingError, arg.UpdatedAt, arg.Kind)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected()
+}
+
 const failPendingDinnerGrounding = `-- name: FailPendingDinnerGrounding :execrows
 UPDATE dinners
 SET grounding_status = 'failed',