📈 Update STATEDIAGRAM.md with v1.0 component state transitions

[pethers]

🎯 Objective

Update STATEDIAGRAM.md with comprehensive state transition documentation reflecting v1.0 component lifecycles, React Context state management, and error handling states to ensure accurate representation of application behavior.

📋 Background

Per Secure Development Policy §10, behavioral documentation must include system state transitions and component lifecycles with UML state diagrams.

Why This Matters:

• ISO 27001 (A.14.1): System behavior documented
• NIST CSF (PR.IP-1): Development processes include state management
• CIS Controls (16.1): Application state behavior defined
• v1.0 Release: Accurate state diagrams critical for debugging

📊 Current State (Measured Metrics)

Current STATEDIAGRAM.md Status:

• File Size: 22KB (baseline exists)
• Last Updated: Reflects v0.8.x state transitions
• Gap: Missing v1.0 error states, React 19.x lifecycle changes
• Diagrams: Widget states ✅, needs error boundary states

v1.0 State Changes:

• Error States: React 19.x error boundary state transitions
• Loading States: Enhanced with suspense boundary support
• Widget States: Idle → Loading → Success/Error → Retry
• Context States: SecurityProfile state management with actions
• Form States: Validation states and submission flows

Current State Machines:

• SecurityLevel Widget: 5 states (Idle, Loading, Valid, Invalid, Submitting)
• Compliance Status: 4 states (Unchecked, Checking, Compliant, Non-Compliant)
• Cost Estimation: 3 states (Pending, Calculating, Complete)
• Application State: 6 states (Initializing, Ready, Error, Offline, Updating, Idle)

✅ Acceptance Criteria

• Update widget state machine diagrams
• Add React error boundary state transitions
• Document loading and suspense states
• Add form validation state diagrams
• Document SecurityProfile context state management
• Include component lifecycle state transitions
• Add error recovery state flows
• Document offline/online state handling
• Include Mermaid state diagrams for all states
• Add state transition triggers and events
• Document guard conditions and invariants
• Include cross-references to FLOWCHART.md
• Add composite state diagrams for complex workflows

🤖 Recommended Agent

Agent: @hack23-isms-ninja
Rationale: Requires behavioral documentation with UML state diagrams following ISMS standards and compliance with system behavior documentation requirements.

📊 Metadata

Priority: High | Effort: M (4-6h) | Domain: documentation, architecture