DP-48 Add Mermaid import command

[StiensWout]

Summary

• Add diagrampilot import <input> --format mermaid --out <path> for best-effort Mermaid flowchart import into DiagramPilot Source Files.
• Preserve simple direction, nodes, labels, edges, edge labels, subgraphs where practical, with deterministic lowercase snake_case Stable IDs and collision suffixes.
• Add text and --json fidelity reporting, overwrite protection with --force, public docs, and CLI/core coverage.

Validation

• npm run check:release-version
• npm run build
• npm test
• npm --workspace website run build
• npm --workspace website run test
• npm run generate:schema
• git diff --exit-code -- schema/diagramspec-v1.schema.json
• npm run check:package-readiness
• npm run check:package-size-budgets
• npm run audit:fallow
• npm run audit:fallow:changed
• git diff --check

Linear: DP-48

[linear-code]

DP-48

[vercel]

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Project	Deployment	Actions	Updated (UTC)
diagram-pilot-website	Ready	Preview, Comment	Jun 15, 2026 12:27pm