Add tests for math rendering and interactive scenes; update navigation and viewport handling

- Updated `lab.spec.ts` to navigate directly to the field lesson.
- Created `math.spec.ts` with tests for math rendering, error checking, and responsive design.
- Added `test4.spec.ts` for interactive scenes, ensuring all questions are functional and accessible.
- Modified `vite.config.ts` to keep original question/answer links navigable in production.

1 files changed, 31 insertions, 0 deletions

diff --git a/package-lock.json b/package-lock.json
index cf51837..833e2ae 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,10 +8,12 @@
       "name": "electrophysics-sandbox",
       "version": "0.1.0",
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         "three": "^0.186.1"
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       "devDependencies": {
         "@playwright/test": "^1.64.1",
+        "@types/katex": "^0.16.8",
         "@types/three": "^0.186.0",
         "typescript": "^7.0.2",
         "vite": "^8.3.5",
@@ -350,6 +352,12 @@
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       "dev": true
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+    "node_modules/@types/katex": {
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+      "resolved": "https://registry.npmjs.org/@types/katex/-/katex-0.16.8.tgz",
+      "integrity": "sha512-trgaNyfU+Xh2Tc+ABIb44a5AYUpicB3uwirOioeOkNPPbmgRNtcWyDeeFRzjPZENO9Vq8gvVqfhaaXWLlevVwg==",
+      "dev": true
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       "resolved": "https://registry.npmjs.org/@types/stats.js/-/stats.js-0.17.4.tgz",
@@ -750,6 +758,14 @@
         "node": ">=18"
       }
     },
+    "node_modules/commander": {
+      "version": "15.0.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-15.0.0.tgz",
+      "integrity": "sha512-z67u4ZhzCL/Tydu1lJARtEZYWbWaN7oYLHbsuzocr6y4N6WZAagG3RQ4FW61V1/0+jImpj293XfrcYnd1qxtPg==",
+      "engines": {
+        "node": ">=22.12.0"
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+    },
     "node_modules/detect-libc": {
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@@ -820,6 +836,21 @@
         "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
       }
     },
+    "node_modules/katex": {
+      "version": "0.19.1",
+      "resolved": "https://registry.npmjs.org/katex/-/katex-0.19.1.tgz",
+      "integrity": "sha512-jG8uKntjSEcm2EpQOh0XturpPuuC9r3Sq5HLHdsFdWZT27E672SF19QEi+of0/YeOy15lDgRhKvr5614uRrEfA==",
+      "funding": [
+        "https://opencollective.com/katex",
+        "https://github.com/sponsors/katex"
+      ],
+      "dependencies": {
+        "commander": "^15.0.0"
+      },
+      "bin": {
+        "katex": "cli.js"
+      }
+    },
     "node_modules/lightningcss": {
       "version": "1.33.0",
       "resolved": "https://registry.npmjs.org/lightningcss/-/lightningcss-1.33.0.tgz",