fix(calm-suite): export section header carries the meaning; items are just extensions

Matches the Save section's pattern: "Export a copy (portable)" → "Export without
Layout", and the items drop their descriptive titles for just the file extension
(.calm.json / .calmscript / .svg / .png / Scaler.toml). Labels only; export
handlers unchanged. Studio 498 tests; build clean.

Claude-Session: https://claude.ai/code/session_01QDBBQRnkBcihrZRt24L41b
Signed-off-by: Eddie Knight <knight@linux.com>

Author: eddie-knight

calm-suite/calm-studio/apps/studio/src/lib/toolbar/Toolbar.svelte

@@ -307,38 +307,38 @@
 						<span class="menu-shortcut">⇧⌘S</span>
 					</button>
 					<div class="export-menu-divider" role="separator"></div>
-					<div class="export-menu-label">Export a copy (portable)</div>
+					<div class="export-menu-label">Export without Layout</div>
 					<button
 						type="button"
 						class="export-menu-item"
 						role="menuitem"
 						onclick={() => handleExportOption(onexportcalm)}
 					>
-						CALM JSON — no layout (.calm.json)
+						.calm.json
 					</button>
 					<button
 						type="button"
 						class="export-menu-item"
 						role="menuitem"
 						onclick={() => handleExportOption(onexportcalmscript)}
 					>
-						calmscript (.calmscript)
+						.calmscript
 					</button>
 					<button
 						type="button"
 						class="export-menu-item"
 						role="menuitem"
 						onclick={() => handleExportOption(onexportsvg)}
 					>
-						SVG (.svg)
+						.svg
 					</button>
 					<button
 						type="button"
 						class="export-menu-item"
 						role="menuitem"
 						onclick={() => handleExportOption(onexportpng)}
 					>
-						PNG (.png)
+						.png
 					</button>
 					{#if showScalerTomlExport}
 						<button
@@ -347,7 +347,7 @@
 							role="menuitem"
 							onclick={() => handleExportOption(onexportscalertoml!)}
 						>
-							Scaler.toml (OpenGRIS)
+							Scaler.toml
 						</button>
 					{/if}
 				</div>

calm-suite/calm-studio/apps/studio/src/tests/components/Toolbar.test.ts

@@ -119,7 +119,7 @@ describe('Toolbar — Scaler.toml export button', () => {
 		});
 		// Open export menu first
 		await fireEvent.click(getByRole('button', { name: /export diagram/i }));
-		expect(queryByText('Scaler.toml (OpenGRIS)')).toBeNull();
+		expect(queryByText('Scaler.toml')).toBeNull();
 	});
 
 	it('renders Scaler.toml export button when showScalerTomlExport is true', async () => {
@@ -128,7 +128,7 @@ describe('Toolbar — Scaler.toml export button', () => {
 		});
 		// Open export menu first
 		await fireEvent.click(getByRole('button', { name: /export diagram/i }));
-		expect(getByText('Scaler.toml (OpenGRIS)')).toBeTruthy();
+		expect(getByText('Scaler.toml')).toBeTruthy();
 	});
 
 	it('calls onexportscalertoml when Scaler.toml button is clicked', async () => {
@@ -137,7 +137,7 @@ describe('Toolbar — Scaler.toml export button', () => {
 			props: makeToolbarProps({ showScalerTomlExport: true, onexportscalertoml }),
 		});
 		await fireEvent.click(getByRole('button', { name: /export diagram/i }));
-		await fireEvent.click(getByText('Scaler.toml (OpenGRIS)'));
+		await fireEvent.click(getByText('Scaler.toml'));
 		expect(onexportscalertoml).toHaveBeenCalledOnce();
 	});
 });