Restores proper content in new marketplace detail overview pages
compared to the legacy overview pages.
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## Summary by CodeRabbit
* **New Features**
* Added Data API URL settings and a visible "Required extensions"
section across integration overviews.
* Unified install/manage UIs for webhooks, Stripe Sync, wrappers,
queues, and others; marketplace mode now shows marketplace-specific
overview content.
* **Style**
* Improved marketplace detail rail and filter-bar button styling;
refined list/link row visuals.
* **Refactor**
* Overview pages reorganized to branch on marketplace mode and extract
shared overview content for consistency.
* **Tests**
* Stabilized integration overview test data for deterministic runs.
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Co-authored-by: Joshen Lim <joshenlimek@gmail.com>
Feature / Refactor
## What is the current behavior?
Data API docs live at the `/api` route as a standalone page. Old links
point to the previous location.
## What is the new behavior?
Data API docs are moved to the integrations section with a dedicated
docs tab and settings tab. Old links are cleaned up, a mobile menu is
added for data API docs navigation, and minor code review fixes are
applied.
## Additional context
Resolves FE-2517
## Summary by CodeRabbit
* **New Features**
* Revamped API docs UI with reusable section layout, language toggle
(JS/Bash), API key selection, and improved code snippets
* Added Data API docs tab, mobile navigation, and dedicated
loading/error/disabled states
* **Navigation Updates**
* Moved API docs and related links into the Integrations/Data API area
and added redirects to new routes
* Updated various internal links to the new Data API settings and
overview locations
* **Tests**
* Added comprehensive unit tests for Data API utilities
