pguerrerox 94b8c357b4 feat: add billing foundation and entitlement enforcement ...

- add workspace-scoped billing storage, usage tracking, and add-on catalog
- enforce plan entitlements for search and deep research routes
- expand pricing and account UI around billing state, usage, and upgrades

2026-05-22 17:50:28 +00:00

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src

feat: add billing foundation and entitlement enforcement

2026-05-22 17:50:28 +00:00