[Content] Empty state page

### Severity

- P3 - Medium (Minor functionality affected)

### MCP Server Creation Source

- MCP Server in Logic Apps

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### Describe the Bug with repro steps

### Issue description:
Right now we're using a number of overlapping terms: register, build, create, manage... using multiple terms for the same or similar actions causes increased cognitive load and reduced clarity and decreases trust.

### Recommendation:
Standardize terminology across the page so users clearly understand actions and can move through the experience easily.

Areas that need updating:
- Page title
- Header title
- Description
- Card titles
- Card descriptions

### As-is screenshot

### To-be screenshot