chore: my-deepagent-seed (BudgetTracker PoC + v0.1.0 seed assets)

Pre-flight assets prepared on the main machine before the new-machine
rewrite of my-deepagent in Python.

- poc/: BudgetTracker + CostMiddleware + MockChatModel PoC.
  Validates wrap_model_call pattern, SQLite WAL + ON CONFLICT upsert,
  per-scope cap accounting. 5/5 pytest PASS in isolated uv venv.
- schemas/: 10 personas (Anthropic Sonnet/Opus/Haiku + DeepSeek mix),
  3 workflows (spec-and-review, bug-fix-with-reproduction,
  code-investigation), 4 artifact JSON Schemas (dev/spec@1,
  dev/phase-plan@1, dev/review-finding-batch@1, common/final-report@1).
- schemas/validate.py: pydantic + Draft202012 cross-validation.
  18/18 assets verified.
- README.md: new-machine bootstrap instructions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

my-deepagent-seed/schemas/workflows/spec-and-review@1.yaml

@@ -0,0 +1,76 @@
+name: spec-and-review
+version: 1
+description: "요구사항 → spec → 리뷰 → verifier 검증"
+roles:
+  - id: spec_writer
+    required_capabilities:
+      - spec_write
+      - phase_planning
+    preferred_backends:
+      - openrouter
+    fallback_personas:
+      - "openrouter-claude-spec-writer@1"
+  - id: reviewer
+    required_capabilities:
+      - code_review
+      - evidence_check
+    preferred_backends:
+      - openrouter
+    fallback_personas:
+      - "openrouter-claude-code-reviewer@1"
+  - id: verifier
+    required_capabilities:
+      - evidence_check
+      - objective_eval
+    preferred_backends:
+      - openrouter
+    fallback_personas:
+      - "openrouter-deepseek-verifier@1"
+phases:
+  - key: spec
+    title: "요구사항 분석 및 Spec 작성"
+    risk: low
+    role: spec_writer
+    expected_artifact:
+      path: artifacts/spec.json
+      schema: dev/spec@1
+    gates:
+      - spec_approved
+    timeout_seconds: 300
+    instructions: |
+      사용자 요구사항을 분석해 dev/spec@1 schema에 맞는 spec.json을 작성하세요.
+      기존 코드는 read_file/glob/grep으로 탐색합니다.
+      완성된 spec.json은 write_file로 artifacts/spec.json에 저장합니다.
+    max_budget_usd: 0.50
+  - key: review
+    title: "Spec 리뷰"
+    risk: low
+    role: reviewer
+    expected_artifact:
+      path: artifacts/review.json
+      schema: dev/review-finding-batch@1
+    gates:
+      - review_approved
+    timeout_seconds: 300
+    instructions: |
+      artifacts/spec.json을 read_file로 읽고 dev/review-finding-batch@1 형식으로 review.json을 작성하세요.
+      각 finding은 severity, category, summary를 반드시 포함합니다.
+      완성된 review.json은 write_file로 artifacts/review.json에 저장합니다.
+    max_budget_usd: 0.50
+  - key: verify
+    title: "리뷰 결과 검증"
+    risk: low
+    role: verifier
+    expected_artifact:
+      path: artifacts/verification.json
+      schema: dev/review-finding-batch@1
+    gates:
+      - verify_approved
+    timeout_seconds: 180
+    instructions: |
+      artifacts/review.json을 read_file로 읽고 각 finding을 코드에서 직접 확인합니다.
+      verifierStatus를 confirmed 또는 rejected로 판정하고 근거를 evidence 필드에 기록합니다.
+      결과를 write_file로 artifacts/verification.json에 저장합니다.
+    max_budget_usd: 0.10
+default_gates: []
+max_total_budget_usd: 2.0