fix: truncate expected SHA to match /version short SHA (#223)

The /version endpoint returns a 7-character short SHA, but the workflow
was comparing against the full 40-character SHA from github.sha /
source_sha, so the version check could never match.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Garandor

.github/workflows/wait-for-api-restart.yml

@@ -105,6 +105,8 @@ jobs:
           BASE_URL="${{ steps.resolve-url.outputs.api_root_url }}"
           TIMEOUT="${{ inputs.timeout }}"
           EXPECTED_SHA="${{ inputs.expected_sha }}"
+          # /version returns a short (7-char) SHA, so truncate to match
+          EXPECTED_SHA="${EXPECTED_SHA:0:7}"
           VERSION_URL="${BASE_URL}/version"
           HEALTH_URL="${BASE_URL%/core/v1}/health"