Add Process Analysis Canvas

[dkharlanau]

Adds an evidence-oriented Process Analysis Canvas for discovery and assessment work.

• adds observed timing and step ownership semantics
• adds variants, pain points, and data-flow analysis fields
• adds standalone process-code canvas HTML renderer
• adds an evidence-based SAP order-entry discovery example
• keeps root, packaged, and VS Code schemas synchronized
• documents terminology: Process Discovery, Process Analysis Canvas, Process Analysis Note
• adds renderer and CLI tests

[github-actions]

Process as Code — PR impact

examples/process-analysis/order-entry.process.yaml

• Change: new process contract

Errors

None.

Warnings

None.