Keep compact note tiles at their chosen size

js/workflow_note/index.js

@@ -708,6 +708,12 @@ function naturalHeight(state, width) {
 // as the node's floor. It never shrinks the node: a taller note keeps its
 // empty space until someone drags it shorter.
 function fitNote(state) {
+  // A tile opens its content in a dialog. Keep its chosen canvas size,
+  // rather than growing it to a full note's measured height.
+  if (state.note.layout === "tile") {
+    state.fitHeight = undefined;
+    return;
+  }
   if (!classicCanvas()) return;
   const { node, root, domWidget } = state;
   const width = node.size[0] - WIDGET_FRAME;

tests/workflow_note.test.mjs

@@ -308,3 +308,35 @@ test("note formatting leaves old prose, unsafe markup and code literal", () => {
   assert.equal(parseInline("`[amber]warning[/amber]`")[0].type, "code");
   assert.equal(parseMarkdown("```\n|a|\n|---|\n```")[0].type, "code");
 });
+
+// Exercise the actual browser fitter with measured layout inputs. Keeping the
+// DOM read behind a stub also proves a tile never measures its dialog content.
+const noteFrontend = readFileSync(new URL("../js/workflow_note/index.js", import.meta.url), "utf-8");
+const fitNoteSource = noteFrontend.slice(noteFrontend.indexOf("function fitNote(state) {"), noteFrontend.indexOf("// Every list widget", noteFrontend.indexOf("function fitNote(state) {")));
+const runFitNote = new Function("classicCanvas", "naturalHeight", "noteFit", "WIDGET_FRAME", "PANEL_TOP", `${fitNoteSource}; return fitNote;`);
+
+test("tile fitting preserves default and saved heights despite a stale widget position", () => {
+  const fit = runFitNote(() => true, () => 50, noteFit, 8, 2);
+  for (const height of [80, 110, 160]) {
+    const state = { note: { layout: "tile" }, fitHeight: 284,
+      node: { size: [380, height], setSize: () => assert.fail("tile fitting must preserve its size") },
+      root: { isConnected: true }, domWidget: { computedHeight: 50, y: 226 } };
+    fit(state);
+    assert.equal(state.fitHeight, undefined, "a tile must not retain a full note's resize floor");
+    assert.equal(state.node.size[1], height);
+  }
+});
+
+test("card and banner fitting still grows to measured content and keeps taller saved sizes", () => {
+  const fit = runFitNote(() => true, () => 300, noteFit, 8, 2);
+  for (const layout of ["card", "banner"]) {
+    for (const height of [80, 500]) {
+      const state = { note: { layout }, node: { size: [380, height],
+        setSize(size) { this.size = size; }, setDirtyCanvas() {} },
+        root: { isConnected: true }, domWidget: { computedHeight: 50, y: 2 } };
+      fit(state);
+      assert.equal(state.fitHeight, 310);
+      assert.equal(state.node.size[1], Math.max(height, 310));
+    }
+  }
+});