[split-required] [guardrail-change] Enforce 500 LOC budget across all services

Install LOC guardrails (check-loc.sh, architecture.md, pre-commit hook)
and split all 44 files exceeding 500 LOC into domain-focused modules:

- consent-service (Go): models, handlers, services, database splits
- backend-core (Python): security_api, rbac_api, pdf_service, auth splits
- admin-core (TypeScript): 5 page.tsx + sidebar extractions
- pitch-deck (TypeScript): 6 slides, 3 UI components, engine.ts splits
- voice-service (Python): enhanced_task_orchestrator split

Result: 0 violations, 36 exempted (pipeline, tests, pure-data files).
Go build verified clean. No behavior changes — pure structural splits.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend-core/security_models.py

@@ -0,0 +1,52 @@
+"""
+Security API - Shared Pydantic Models
+
+Data models used across security_api, security_mock_data, and security_monitoring.
+"""
+
+from typing import Optional
+from pydantic import BaseModel
+
+
+class ToolStatus(BaseModel):
+    name: str
+    installed: bool
+    version: Optional[str] = None
+    last_run: Optional[str] = None
+    last_findings: int = 0
+
+
+class Finding(BaseModel):
+    id: str
+    tool: str
+    severity: str
+    title: str
+    message: Optional[str] = None
+    file: Optional[str] = None
+    line: Optional[int] = None
+    found_at: str
+
+
+class SeveritySummary(BaseModel):
+    critical: int = 0
+    high: int = 0
+    medium: int = 0
+    low: int = 0
+    info: int = 0
+    total: int = 0
+
+
+class ScanResult(BaseModel):
+    tool: str
+    status: str
+    started_at: str
+    completed_at: Optional[str] = None
+    findings_count: int = 0
+    report_path: Optional[str] = None
+
+
+class HistoryItem(BaseModel):
+    timestamp: str
+    title: str
+    description: str
+    status: str  # success, warning, error