Create methodology page explaining verification and correction policy

[TommiLindfors]

Scope

Create a methodology page explaining Clarvia's verification model, correction policy, and how source-backed data is maintained. Cover the verification ladder, how sources are cited, how corrections are submitted, and the human review requirement before publication.

Source links

• Internal: Clarvia CONTRIBUTING.md
• Internal: Clarvia verification ladder specification

Acceptance criteria

• Methodology page content written
• Verification ladder explained with examples
• Correction policy documented
• Source citation requirements explained
• Human review process described
• Page integrated into workflow-web site
• Review status assigned

Trust level

reviewer-only — content must be reviewed by someone with domain knowledge before publication.

[TommiLindfors]

Closing as completed. METHODOLOGY.md exists in the repo root.