feat(phase-16): enhanced Tests view, Red/Blue dashboard metrics, and Template admin panel (T-122, T-123, T-124)

backend/app/schemas/metrics.py

@@ -1,6 +1,8 @@
 """Pydantic schemas for coverage-metrics endpoints."""
 
-from pydantic import BaseModel
+from datetime import datetime
+
+from pydantic import BaseModel, ConfigDict
 
 
 class CoverageSummary(BaseModel):
@@ -25,3 +27,59 @@ class TacticCoverage(BaseModel):
     not_covered: int
     not_evaluated: int
     in_progress: int
+
+
+# ── V2 — Test Pipeline ────────────────────────────────────────────────
+
+
+class TestPipelineCounts(BaseModel):
+    """Counters per state in the test pipeline."""
+
+    draft: int = 0
+    red_executing: int = 0
+    blue_evaluating: int = 0
+    in_review: int = 0
+    validated: int = 0
+    rejected: int = 0
+    total: int = 0
+
+
+# ── V2 — Team Activity ───────────────────────────────────────────────
+
+
+class TeamActivity(BaseModel):
+    """Activity summary for a team (Red or Blue)."""
+
+    team: str
+    tests_completed: int = 0
+    tests_pending: int = 0
+    avg_completion_hours: float | None = None
+
+
+# ── V2 — Validation Rate ─────────────────────────────────────────────
+
+
+class ValidationRate(BaseModel):
+    """Approval / rejection rate for a manager role."""
+
+    role: str  # "red_lead" or "blue_lead"
+    total_reviewed: int = 0
+    approved: int = 0
+    rejected: int = 0
+    approval_rate: float = 0.0  # percentage
+
+
+# ── V2 — Recent Test ─────────────────────────────────────────────────
+
+
+class RecentTestItem(BaseModel):
+    """Lightweight test entry for the recent-tests widget."""
+
+    id: str
+    name: str
+    state: str
+    technique_mitre_id: str | None = None
+    technique_name: str | None = None
+    created_at: datetime | None = None
+
+    model_config = ConfigDict(from_attributes=True)