feat(dotnet): add scheduler contract harness

docs/ROADMAP_WBS.md

@@ -1470,6 +1470,7 @@ WBS-8.8 (KIS 리팩터) — 독립적 (원격 병행)
 > 실행 분해 검증기: `tools/validate_dotnet_migration_execution_plan_v1.py`
 > parity 계약: [WBS_10_DOTNET_PARITY_CONTRACT.yaml](./WBS_10_DOTNET_PARITY_CONTRACT.yaml)
 > provenance 계약: [WBS_10_DOTNET_PROVENANCE_CONTRACT.yaml](./WBS_10_DOTNET_PROVENANCE_CONTRACT.yaml)
+> scheduler contract: [WBS_10_DOTNET_SCHEDULER_CONTRACT.yaml](./WBS_10_DOTNET_SCHEDULER_CONTRACT.yaml)
 
 > 현황 진단(2026-06-26): .NET 프로젝트는 Python 엔진(41 모듈, 14,500 LOC) 대비 5~10%(~1,400 LOC) 수준.
 > Domain 계산기 6개·데이터 모델 8개·KIS/Naver/Yahoo 클라이언트·PostgreSQL 마이그레이션·Razor Pages 어드민 대시보드 기본 구현 완료.

docs/WBS_10_DOTNET_SCHEDULER_CONTRACT.yaml

@@ -0,0 +1,60 @@
+formula_id: WBS_10_DOTNET_SCHEDULER_CONTRACT_V1
+owner: QuantEngine
+status: draft
+goal: "스케줄러 상태 전이, 의존성, 재시도, 감사 추적을 표준화한다."
+
+state_machine:
+  states:
+    - pending
+    - running
+    - succeeded
+    - failed
+    - retrying
+    - blocked
+  allowed_transitions:
+    pending: [running, blocked]
+    running: [succeeded, failed, retrying, blocked]
+    failed: [retrying, blocked]
+    retrying: [running, failed, blocked]
+    succeeded: []
+    blocked: []
+
+job_definitions:
+  - job_id: daily-collection
+    cron: "0 9 * * *"
+    lease_owner: collection
+    timeout_policy: "2h"
+    dependency: gather-trading-data
+  - job_id: hourly-price-update
+    cron: "0 9,11,13,15 * * 1-5"
+    lease_owner: price-update
+    timeout_policy: "30m"
+    dependency: price-feed
+  - job_id: weekly-report
+    cron: "0 17 * * 5"
+    lease_owner: report
+    timeout_policy: "1h"
+    dependency: report-generator
+  - job_id: monthly-optimization
+    cron: "0 2 1 * *"
+    lease_owner: optimization
+    timeout_policy: "3h"
+    dependency: optimizer
+
+audit_fields:
+  - JobId
+  - RunId
+  - State
+  - StartedAt
+  - FinishedAt
+  - ResourceKey
+  - Reason
+
+idempotency:
+  required: true
+  key_pattern: "{job_id}:{resource_key}:{yyyyMMddHHmm}"
+
+notes:
+  - "상태 전이와 감사 추적은 append-only JSONL로 남긴다."
+  - "실행 재개는 retrying 이후에만 허용한다."
+  - "숫자 계산은 여기서 하지 않는다."