chore(fmt): repo-wide gofmt -w sweep — close drift surfaced by ci-pipeline-cleanup Phase 4

Mechanical reformat. The new 'gofmt drift' CI step (added in
ci-pipeline-cleanup Phase 4, commit 71b2245) surfaced 111 files
with accumulated gofmt drift across cmd/, internal/, and deploy/test/.

Each file's diff is gofmt-standard: whitespace adjustments, intra-
group import sorting (alphabetical by import path within blank-line-
separated groups), and struct-tag column alignment. No semantic
changes — verified via 'git diff --ignore-all-space' which shows only
the line-position deltas from import reordering.

The gate stays in place after this commit. Going forward it catches
gofmt drift at PR time.

internal/api/handler/verification.go

@@ -97,8 +97,8 @@ func (h VerificationHandler) VerifyDeployment(w http.ResponseWriter, r *http.Req
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusOK)
 	json.NewEncoder(w).Encode(map[string]interface{}{
-		"job_id":   jobID,
-		"verified": req.Verified,
+		"job_id":      jobID,
+		"verified":    req.Verified,
 		"verified_at": result.VerifiedAt,
 	})
 }