Title

feat(usage): aggregated tag daily activity endpoint + UI fallback; MCP optional; tests included

Relevant issues

Pre-Submission checklist

• I have Added testing in the tests/litellm/ directory, Adding at least 1 test is a hard requirement
• I have added a screenshot of my new test passing locally
• My PR passes all unit tests on make test-unit
• My PR's scope is as isolated as possible, it only solves 1 specific problem

Type

🆕 New Feature

Changes

• Backend: add GET /tag/daily/activity/aggregated returning unpaginated daily tag activity in same shape as paginated.
• UI: update tagDailyActivityCall to prefer aggregated endpoint and fallback to paginated when unavailable.
• Common: make MCP field optional in breakdown aggregation.
• Tests: add in tests/test_litellm/:
  • test_common_daily_activity_mcp_optional.py
  • test_tag_aggregated_endpoint.py

UI Demo

Loom: https://www.loom.com/share/94ce3a87ae0f4d46a673535bff558c5b?sid=1253422e-27ca-4e93-86ea-99b3dd0cfb97