feat(#134): design Non-AI Quality Orchestrator service

Implement quality orchestration service to enforce standards on AI
agent work and prevent premature completion claims.

Components:
- QualityOrchestratorService: Core validation and gate execution
- QualityGate interface: Extensible gate definitions
- CompletionClaim/Validation: Track claims and verdicts
- OrchestrationConfig: Per-workspace configuration

Features:
- Validate completions against quality gates (build/lint/test/coverage)
- Run gates with command execution and output validation
- Support string and RegExp output pattern matching
- Smart continuation logic with attempt tracking
- Generate actionable feedback for failed gates
- Strict/lenient mode for gate enforcement
- 5-minute timeout, 10MB output buffer per gate

Default gates:
- Build Check (required)
- Lint Check (required)
- Test Suite (required)
- Coverage Check (optional, 85% threshold)

Tests: 21 passing with 85.98% coverage

Fixes #134

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

apps/api/src/quality-orchestrator/index.ts

@@ -0,0 +1,4 @@
+export * from "./quality-orchestrator.module";
+export * from "./quality-orchestrator.service";
+export * from "./interfaces";
+export * from "./dto";