feat: add free shipping banner

[beeme1mr]

No description provided.

[github-actions]

🚀 OpenFeature Manifest Comparison (validate-flags)

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Remote Push Preview - The following changes will be applied to the remote flag service (https://flagd-studio.onrender.com/api) when your manifest is pushed

📊 Change Summary

Change Type	Count	Description
🟢 Additions	1	Flags that will be added to remote
🔴 Removals	0	Flags that will be removed from remote
🟡 Modifications	0	Flags that will be modified in remote
Total	1	Total differences

📋 View detailed changes

🟢 Flags That Will Be Added (1)

🟢 free-shipping-banner

🔄 View manifest diff

@@ -1,20 +1,15 @@
 {
   "$schema": "https://raw.githubusercontent.com/open-feature/cli/refs/heads/main/schema/v0/flag-manifest.json",
   "flags": {
-    "free-shipping-banner": {
-      "flagType": "boolean",
-      "description": "Controls the free shipping banner on the website. SHOP-4287",
-      "defaultValue": false
-    },
     "offer-free-shipping": {
-      "flagType": "boolean",
+      "defaultValue": false,
       "description": "Add free shipping to the UI.",
-      "defaultValue": false
+      "flagType": "boolean"
     },
     "sticky-header": {
-      "flagType": "boolean",
+      "defaultValue": false,
       "description": "Make the header stay at the top of the page while scrolling.",
-      "defaultValue": false
+      "flagType": "boolean"
     },
     "use-distributed-db": {
       "defaultValue": true,

---

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This comment is automatically updated on each push

[gemini-code-assist]

Code Review

This pull request introduces a new feature flag free-shipping-banner and refactors the flag definitions and their usage across the application. The changes are a good improvement, especially with the introduction of FlagKeys to avoid magic strings. I've identified a few issues that should be addressed to improve the code quality: an obsolete flag definition that should be removed, and a couple of inconsistencies in default values within the generated hooks. I've also pointed out a minor formatting issue in the generated JSDoc comments.