feat: implement GuideController for evolution guide panel

- Added GuideController to manage the evolution guide panel, including event listeners for opening/closing the panel and spawning entities.
- Introduced a new guide.js file with the GuideController implementation.
- Created guide.css for styling the guide panel and its elements.
- Updated main.js to initialize the GuideController and link it with the EvolutionController.
- Enhanced settings.js to include functionality for resetting settings to defaults and saving state to localStorage.
- Modified modal.css to improve the layout and styling of the modal footer and reset button.
- Adjusted main.css to unify button styles for settings and guide buttons.
- Updated icons.css to add animations for entity interactions.
- Refactored gradient.js to utilize constants for default values.

.claude/settings.local.json

@@ -0,0 +1,9 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(/Users/sha/Developer/sha.dev/devpage/src/icons/bacteria.svg:*)",
+      "Bash(/Users/sha/Developer/sha.dev/devpage/src/styles/guide.css:*)",
+      "Bash(/Users/sha/Developer/sha.dev/devpage/src/js/guide.js:*)"
+    ]
+  }
+}