chore: fix shellcheck findings across migration scripts

phase1_post_check.sh

@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -euo pipefail
+# shellcheck disable=SC2329
 
 # =============================================================================
 # phase1_post_check.sh — Verify Phase 1 (Gitea on Unraid) succeeded
@@ -40,6 +41,7 @@ run_check "Admin user authenticates (basic auth)" \
   curl -sf -o /dev/null -u "${GITEA_ADMIN_USER}:${GITEA_ADMIN_PASSWORD}" "${GITEA_INTERNAL_URL}/api/v1/user"
 
 # Check 3: API token works and returns correct username
+# shellcheck disable=SC2329
 check_token() {
   local response
   response=$(curl -sf -H "Authorization: token ${GITEA_ADMIN_TOKEN}" "${GITEA_INTERNAL_URL}/api/v1/user")
@@ -54,6 +56,7 @@ run_check "Organization '${GITEA_ORG_NAME}' exists" \
   curl -sf -o /dev/null -H "Authorization: token ${GITEA_ADMIN_TOKEN}" "${GITEA_INTERNAL_URL}/api/v1/orgs/${GITEA_ORG_NAME}"
 
 # Check 5: Gitea Actions enabled (verify via settings API)
+# shellcheck disable=SC2329
 check_actions() {
   # The /api/v1/settings/api endpoint returns instance settings.
   # If Actions are enabled, the Gitea instance will accept runner registrations.