WBS-7.9: target snapshot admin deploy host runner

docs/SYNOLOGY_ACT_RUNNER_REFACTOR_PR_BODY.md

@@ -0,0 +1,20 @@
+# Synology Act Runner Split PR Body
+
+## Title
+
+`chore: split Synology act_runner start and re-registration scripts`
+
+## Body
+
+- Added `tools/re_register_act_runner_synology.sh` for explicit host-mode re-registration.
+- Added `tools/start_act_runner_synology.sh` for boot-time daemon start only.
+- Kept `tools/setup_act_runner.sh` as the bootstrap path, but made the re-registration flow explicit and repeatable.
+- Switched the runner registration labels to `self-hosted:host,snapshot-admin-host:host` so the job runs in host mode instead of Docker job containers and can be targeted by a dedicated deployment label.
+- Updated `docs/SYNOLOGY_SNAPSHOT_ADMIN_POC.md` and `docs/ROADMAP_WBS.md` so the operator flow and WBS notes match the new runner split.
+- The `snapshot_admin.yml` workflow is split into push smoke validation and manual full validation, which reduces routine CI cost while preserving the full web smoke path on demand.
+
+## Verification
+
+- `python tools/validate_snapshot_admin_workflow_v1.py`
+- `python -c "import yaml, pathlib; yaml.safe_load(pathlib.Path('.gitea/workflows/snapshot_admin.yml').read_text(encoding='utf-8'))"`
+- `git diff -- .gitea/workflows/snapshot_admin.yml tools/setup_act_runner.sh docs/SYNOLOGY_SNAPSHOT_ADMIN_POC.md docs/ROADMAP_WBS.md`