Add a "⧉ Copy" button that places the current diagram on the system clipboard
as a PNG via the async Clipboard API (ClipboardItem). The write is invoked
synchronously with the PNG handed over as a promise, so it stays inside the
click gesture WebKit requires.
PNG export and clipboard copy now re-render through renderRaster(), which
forces htmlLabels off via an injected init directive. Flowcharts otherwise emit
<foreignObject> HTML labels that taint the canvas and make toBlob()/clipboard
writes fail — this also fixes pre-existing flowchart PNG export. The live
preview and SVG export keep the richer foreignObject labels.
Verified end-to-end: renderRaster yields a foreignObject-free SVG, it
rasterizes without tainting, and clipboard.write resolves on a real click.
Add an Optimize side panel that analyses the active flowchart and applies
one-click, reversible source rewrites to make dense graphs readable.
- optimize.ts: pure, label-aware flowchart parser + metrics, a 0-100
readability score, and transforms — ELK layered layout, node/rank
spacing + curved edges, de-emphasising cross-cutting hub edges
(event bus / audit / cost-style fan-ins), duplicate-edge removal,
direction toggle, and a non-destructive focus variant.
- mermaid.ts: register @mermaid-js/layout-elk so `layout: elk` renders.
- OptimizePanel.svelte + Toolbar toggle; panels are mutually exclusive.
- Preview: render the focus variant when a node is spotlighted, with a
clear-focus pill.
- store/Editor: applySource() bumps a revision so programmatic rewrites
re-sync CodeMirror and stay undoable with the editor's history.
Standard Tauri layout with a Svelte 5 + TypeScript + Vite frontend and a
Rust backend in src-tauri. Adds build tooling, app/window config,
capabilities, generated icons and the project README.
