turbostarter

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Alejandro Gutiérrez 1ff8ff8f06 feat: implement Stories 2.4-2.7 — E-R, Org Chart, Architecture, Sequence diagram type renderers

Adds four diagram type renderers completing the core diagram type suite:
- Story 2.4: E-R entity nodes with column tables, relationship edges with cardinality labels
- Story 2.5: Org chart person nodes with role/department tags, hierarchy edges
- Story 2.6: Architecture nodes (service, database, queue, load balancer, external), connection edges
- Story 2.7: Sequence participant nodes with lifelines + activation bars, fragment nodes,
  3 custom edge types (sync/async/return), custom time-ordered layout (not ELK)

Story 2.7 includes code review fixes: computeLayout returns LayoutResult so enriched
sequence edges flow through useAutoLayout, activation bar computation in layout,
immutable layout function, self-message U-shaped loop rendering, sequence node size
tests in buildElkGraph.

476 tests passing across 29 test files, zero regressions.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-02-27 01:24:50 +00:00

1-1-create-and-view-diagrams.md

feat: implement Story 1.1 — create and view diagrams

2026-02-22 23:54:50 +00:00

1-2-organize-diagrams-into-projects.md

feat: implement Story 1.2 — organize diagrams into projects

2026-02-23 21:45:16 +00:00

1-3-diagram-access-control-and-management.md

feat: implement Story 1.3 — diagram access control and management

2026-02-23 22:18:28 +00:00

1-4-recent-view-and-drag-and-drop-organization.md

feat: implement Story 1.4 — recent view and drag-and-drop organization