Ingest ProcessMapping Enterprise AI Framework evidence manifest

[ProfessorPolymorphic]

ProcessMapping now publishes a project-local Enterprise AI Framework evidence manifest for AISPEG ingestion.

Manifest:
https://raw.githubusercontent.com/ui-insight/ProcessMapping/main/docs/governance/enterprise-ai-framework/evidence.json

Schema:
https://raw.githubusercontent.com/ui-insight/ProcessMapping/main/docs/governance/enterprise-ai-framework/evidence.schema.json

Project parent tracker:
https://github.com/ui-insight/ProcessMapping/issues/97

Acceptance criteria:

• Fetch the ProcessMapping manifest from the raw GitHub URL.
• Validate it against the ProcessMapping evidence schema.
• Use project.slug + framework.id + requirements[].id as the stable primary key.
• Store current_assertion.status as the compliance assertion status.
• Refresh linked GitHub issue state from each requirements[].github_issue.number as work-tracking state.
• Preserve blockers, required evidence, tags, and evidence source links for reviewer drill-down.
• Do not scrape Markdown or GitHub issue prose for canonical compliance status.