fix: react key warnings from duplicate message IDs + establish jest testing framework (#655)

* fix: resolve issue #588 - react key warnings from duplicate message IDs + establish jest testing framework

* Update the makefile and workflow with the js test

* Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

web/tests/markdown-katex.test.ts

@@ -1,9 +1,6 @@
-import { describe, it } from "node:test";
-import assert from "node:assert/strict";
-
 import katex from "katex";
 
-import { katexOptions } from "../src/core/markdown/katex.ts";
+import { katexOptions } from "../src/core/markdown/katex";
 
 function render(expression: string) {
   return katex.renderToString(expression, {
@@ -14,26 +11,26 @@ function render(expression: string) {
 
 describe("markdown physics katex support", () => {
   it("renders vector calculus operators", () => {
-    assert.doesNotThrow(() => {
+    expect(() => {
       render("\\curl{\\vect{B}} = \\mu_0 \\vect{J} + \\mu_0 \\varepsilon_0 \\pdv{\\vect{E}}{t}");
-    });
+    }).not.toThrow();
   });
 
   it("renders quantum mechanics bra-ket notation", () => {
     const html = render("\\braket{\\psi}{\\phi}");
-    assert.ok(html.includes("⟨") && html.includes("⟩"));
+    expect(html.includes("⟨") && html.includes("⟩")).toBeTruthy();
   });
 
   it("renders vector magnitude formula with subscripts and square root", () => {
-  const html = render("(F_1) (F_2), (F=\\sqrt{F_1^2+F_2^2})");
-  assert.ok(html.includes("F"));
-  assert.ok(html.includes("₁") || html.includes("sub")); // subscript check
-  assert.ok(html.includes("√") || html.includes("sqrt")); // square root check
+    const html = render("(F_1) (F_2), (F=\\sqrt{F_1^2+F_2^2})");
+    expect(html.includes("F")).toBeTruthy();
+    expect(html.includes("₁") || html.includes("sub")).toBeTruthy(); // subscript check
+    expect(html.includes("√") || html.includes("sqrt")).toBeTruthy(); // square root check
   });
 
   it("renders chemical equations via mhchem", () => {
-    assert.doesNotThrow(() => {
+    expect(() => {
       render("\\ce{H2O ->[\\Delta] H+ + OH-}");
-    });
+    }).not.toThrow();
   });
 });