WBS-7.3: GAS→Python 마이그레이션 5개 항목 완료 (F14, F02-F06)

- F14: late_chase_risk_score 검증
  * GAS가 유일한 생산처 (Python canonical 없음)
  * migration_action: KEEP_IN_GAS로 정정, status: DONE

- F02/F03/F04/F06: priceBasis 로직 포팅
  * formulas/price_basis_v1.py: select_price_basis_tier2/tier1 구현
  * tests/parity/test_price_basis_parity_v1.py: 8 parity 테스트 (모두 PASS)
  * GAS Number.isFinite() 의미론 정확히 재현 (math.isfinite 사용)
  * 모든 테스트 112/112 PASS

남은 작업 (4개):
- F05: decision_logic (action assignment)
- F07: score_logic (threshold addition)
- F10: routing decision
- F15: late_chase_gate

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

docs/SYNOLOGY_ACT_RUNNER_REFACTOR_PR_BODY.md

@@ -12,9 +12,15 @@
 - 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.
+- The deploy workflow now waits for `127.0.0.1:8787/api/state` readiness before asserting success, so startup latency does not fail the run spuriously.
+- The `ci.yml` workflow now keeps `push` traffic on the core gate only, with UI/storage validation retained for non-push events.
 
 ## 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`
+- Deploy job evidence:
+  - `healthcheck` retried after startup and passed
+  - `snapshot-admin-web-v6` returned from the verification step
+  - `Job succeeded`