PR #124: Add continuous paper operation and Control Center

[Atlas2005]

Summary

• adds a one-cycle continuous-paper application service that reuses the existing production candidate pipeline and daily paper loop
• persists sessions, reports, Learning Desk outputs, AI shadow reports, orders, fills, positions, equity and reconciliation facts
• adds atomic, conflict-safe in-memory and PostgreSQL reporting stores
• advances AI Firm operation from shadow_bound to bounded active_shadow at the orchestration/reporting layer only
• binds Investment Committee input to exact specialist-output digests
• adds optional Prefect scheduling with serializable configuration and no import-time scheduling
• provisions a PostgreSQL-backed Grafana Control Center with five dashboards
• keeps deterministic non-LLM production execution isolated from all AI shadow output

Architecture boundaries

• reuses run_real_candidate_daily_paper
• no second strategy engine
• no second optimizer, ledger, fill simulator, PnL engine or reconciliation engine
• no automatic strategy promotion
• no custom frontend
• no broker integration
• no simulated-broker or real-money orders
• DeepSeek remains advisory-only and cannot alter production candidates, allocation, orders, fills, account state or reconciliation

Control Center

Provisioned dashboards:

1. QuantPilot Overview
2. Orders and Execution
3. Portfolio and PnL
4. AI Firm and Learning Desk
5. Operations

Grafana uses PostgreSQL as its read-only datasource.

Active Shadow

• disabled by default
• live calls require explicit enablement
• bounded by physical-call and estimated-cost limits
• cache-first with validated cache payloads
• provider and cache failures abstain without blocking production
• physical calls, cache hits, token fields, estimated cost and abstentions are recorded
• Investment Committee receives exact specialist evidence digests
• AI shadow output remains outside production identity and execution artifacts

Validation

• continuous-paper tests: 12 passed
• focused suite: 237 passed
• full suite: 1631 passed
• five Grafana dashboards / 15 panels
• Docker Compose YAML parsing: passed
• CLI and Prefect serve help: passed
• git diff --check: passed