feat: refine workbench visuals and map controls

Unify the Agent history extension with the header acrylic surface, preserve the full conversation body, and consolidate shared control and status styling.

Restore map flow and SCADA controller behavior, remove obsolete rendering paths, and extend regression coverage. Button press coverage now releases outside the target so state assertions cannot accidentally toggle the control.

src/app/app.e2e.ts

@@ -80,7 +80,7 @@ test("preserves compact typography in header and agent controls", async ({ page
   await expect(approvalControl).toHaveCSS("font-size", "12px");
   await expect(approvalControl).toHaveCSS("line-height", "16px");
   await expect(suggestion).toHaveCSS("font-size", "12px");
-  await expect(suggestion).toHaveCSS("font-weight", "500");
+  await expect(suggestion).toHaveCSS("font-weight", "600");
 });
 
 test("lets interactive utilities override surface materials", async ({ page }) => {
@@ -100,7 +100,7 @@ test("lets interactive utilities override surface materials", async ({ page }) =
   expect(hoverBackground).not.toBe(restingBackground);
 });
 
-test("preserves v3 menu and panel styling through Tailwind v4", async ({ page }) => {
+test("keeps menu origin and integrated composer styling through Tailwind v4", async ({ page }) => {
   await page.setViewportSize({ width: 1440, height: 900 });
   await page.goto("/");
 
@@ -116,6 +116,6 @@ test("preserves v3 menu and panel styling through Tailwind v4", async ({ page })
   const commandShadow = await agentCommandControl.evaluate(
     (element) => window.getComputedStyle(element).boxShadow
   );
-  expect(commandShadow).toContain("rgba(0, 0, 0, 0.05) 0px 1px 2px 0px");
-  expect(commandShadow).not.toContain("0px 1px 3px 0px");
+  expect(commandShadow).toBe("none");
+  await expect(agentCommandControl).toHaveCSS("border-top-width", "0px");
 });