feat: add fluxograma-builder plugin (swimlane flowchart builder)

[RodrigoZone]

Summary

This PR adds the fluxograma-builder plugin to the partner-built directory — a skill for creating professional swimlane flowcharts as self-contained HTML/SVG files, with no external dependencies.

What it does

• Generates HTML files with SVG swimlane diagrams from natural language process descriptions
• Supports multi-actor lanes, numbered phases, and color-coded node types
• Enforces strict routing rules to prevent arrow overlaps

Key technical standards encoded in the skill

• Single connection point rule — each node side (TOP/BOTTOM/LEFT/RIGHT) is used by at most one arrow
• Margin channel routing — loop-back arrows travel via left/right margin channels and arrive at the LEFT or RIGHT of the target node (never at TOP when TOP is already occupied)
• Dynamic edge label widths — label boxes sized to text length, never truncated
• SVG clipPath — applied to all node text to prevent overflow outside card boundaries
• Render order — arrows drawn before nodes so nodes always appear on top

Plugin structure

partner-built/fluxograma-builder/
├── .claude-plugin/plugin.json
├── .mcp.json                    (no external connectors required)
├── README.md
└── skills/fluxograma-builder/
    ├── SKILL.md
    └── references/
        └── template.md          (complete working code template)

Trigger contexts

The skill activates automatically when users ask for: flowcharts, process diagrams, swimlane diagrams, actor maps, BPM visuals, or when fixing existing diagrams with overlap/routing issues.

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Author: Rodrigo Moraes (rmoraes3008@gmail.com)