Refactor: consolidate duplicate PBT framework content between create-expert-toml.ts and agents-md-template.ts

[FL4TLiN3]

Description

PBT (Property-Based Testing) framework documentation is duplicated between two files, creating maintenance burden and risk of inconsistency.

Current State

apps/create-expert/src/lib/agents-md-template.ts contains:

• Framework Architecture diagram
• Three Testing Stages table
• Property Categories (User Properties, Perstack Properties)
• PS-XXX property definitions

apps/create-expert/src/lib/create-expert-toml.ts contains:

• Same Perstack Properties in PROPERTY_EXTRACTOR_INSTRUCTION
• Framework delegation structure in expert instructions

Both files define the same concepts in slightly different ways:

agents-md-template.ts:

### Perstack Properties (always verified):

*Security:*
- PS-SEC-01: Minimal tool access - uses `pick` for only needed tools

create-expert-toml.ts (property-extractor):

### Perstack Properties (PS-XXX format)

**Security:**
- PS-SEC-01: Minimal tool access - uses `pick` for only needed tools

Minor formatting differences but same content. If one is updated, the other must be manually synchronized.

Target State

Option A: Single source of truth
Define properties once and import:

// apps/create-expert/src/lib/pbt-properties.ts
export const PERSTACK_PROPERTIES = {
  security: [
    { id: 'PS-SEC-01', name: 'Minimal tool access', ... },
    ...
  ],
  ...
}

export function formatForInstruction(props): string { ... }
export function formatForAgentsMd(props): string { ... }

Option B: Accept duplication but document
Add comment noting both files must be synchronized:

// NOTE: Perstack Properties are also defined in agents-md-template.ts
// Keep both files synchronized when updating

Option C: Remove from one location

• Keep detailed version in agents-md-template.ts (AGENTS.md is the reference doc)
• Simplify in property-extractor instruction to just reference the framework

Affected Areas

• apps/create-expert/src/lib/create-expert-toml.ts
• apps/create-expert/src/lib/agents-md-template.ts

Acceptance Criteria

• Single source of truth for property definitions
• Changes in one place automatically propagate
• Or: explicit synchronization documentation if keeping duplicates

[github-actions]

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