TASK-004: Implement Operational Maturity

• Status: Completed
• Date: 2026-04-16
• Spec: SLICE-004: Operational Maturity
• ADRs: ADR-001: Use Central App State Store, ADR-002: File-Backed Run History Store Before Database Persistence, ADR-004: Use One Operational Maturity Slice Before Specialized Modules

Objective

Deliver the remaining core operational maturity work as one bounded implementation phase: richer diagnostics, explicit alarm recovery behavior, configurable simulator profiles, and more informative run results and metrics.

Scope

• extend canonical app state with structured diagnostics timeline and operational counters
• provide a richer operational workspace in the UI
• separate alarm acknowledgment from clearance and recovery
• introduce named simulator profiles loaded from configuration
• enrich live results and persisted run summaries with more useful metrics
• add focused tests and sample assets for the new behavior

Non-Scope

• trend charts or analytics dashboards
• a new multi-screen application shell
• hot reload or editing UX for simulator profiles
• advanced image synthesis
• explicit state machine library adoption
• performance instrumentation as a required deliverable

AI Tool Guidance

Do not hand this whole task to one AI chat.

Use the smaller task pack for implementation:

1. TASK-004A: Diagnostics State and Timeline
2. TASK-004C: Alarm Acknowledgment and Recovery Flow Hardening
3. TASK-004D: Simulator Profiles and Configuration
4. TASK-004E: Inspection Results and Run Metrics
5. TASK-004B: Operational Workspace UI and Fault Injection
6. TASK-004F: Integration Tests and Sample Assets

The recommended order, cost guidance, and copy or paste prompts are documented in SLICE-004 Task Pack.

Acceptance Criteria Mapping

The implementation must satisfy all acceptance criteria from SLICE-004.