DiagramPilot v0.3.0

DiagramPilot v0.3.0

Issue: Release-aligned documentation rework and v0.3.0 closeout
Issue Version: 0.3.0
Tag: v0.3.0
npm: https://www.npmjs.com/package/diagrampilot/v/0.3.0
Public Website: https://diagrampilot.com

Implementation Notes

• Scope decisions resolved during planning: this is a full docs review and
  rework, not a narrow wording cleanup; docs rewrites are required in place;
  package-local READMEs and published package docs are in scope; the issue uses
  an explicit docs inventory checklist; and documentation correctness is
  release-blocking for v0.3.0 closeout.
• Reworked root, public, package-local, demo-facing, website deployment, and
  maintainer documentation around the v0.3.0 release-aligned product shape.
• Added release-aligned documentation contract coverage for the v0.3.0 upgrade
  path and public package README surfaces.
• Added subcommand --help support for check, generate, render, and
  export so documentation spot checks can use real command help output.
• Updated public boundary tests so Source Mutation is treated as shipped MCP
  behavior instead of forbidden future language.
• Synced shared release metadata from issue 79 to 0.3.0.
• Reviewed ADR applicability; no ADR needed a decision-history update.

Validation Results

npm run sync:issue-release-version -- --issue .scratch/v0-3-0-alpha-capability-release/issues/79-release-aligned-documentation-rework-and-v0-3-0-closeout.md
npm run build
npm test
npm run audit:fallow
npm run audit:fallow:changed
npm run check:release-version
npm run check:issue-release-version -- --issue .scratch/v0-3-0-alpha-capability-release/issues/79-release-aligned-documentation-rework-and-v0-3-0-closeout.md
npm run check:package-readiness
npm --workspace website run build
npm --workspace website run check:visual
git diff --check

All validation commands passed. npm test passed 255 tests. Fallow full and
changed-code gates passed. Package readiness passed for 8 public packages.
Command-help spot checks passed for top-level help, check, generate,
render, export, and mcp.