Revspire Everywhere troch Anirudh Krishnan

Revspire Everywhere brings Revspire workflows into Firefox as a native sidebar while using Gmail.

### What it does
- Tenant-aware authentication for Revspire users.
- Detects Gmail context (subject and recipients from compose/thread).
- Searches Revspire content and deal rooms.
- Opens content and generates share links.
- Creates and tracks content requests.
- Shows recipient engagement/activity insights.

### Where it runs
- Gmail web app (https://mail.google.com/*) for context detection.
- Revspire tenant APIs for authenticated data retrieval and actions.

### Notes
- Requires a valid Revspire account and tenant access.
- Some features request additional host permission at runtime for non-default tenant domains.