Fixes critical Anthropic streaming input token undercount + adds detailed token tracking with DB migration 018. Includes 18 new unit tests. Integrated into release/v3.5.4.
- Fix getLoggedInputTokens to return full prompt_tokens (input + cache_read + cache_creation)
- Fix usageExtractor for non-streaming Claude responses to calculate total correctly
- Add formatUsageLog helper to show CR=<cache_read> in logs
- Add migration 012 to fix historical token counts in usage_history
- Move prompt cache metrics from Settings to /dashboard/cache page
Per Claude API docs:
Total input tokens = input_tokens + cache_creation_input_tokens + cache_read_input_tokens
Fixes issue where totalInputTokens (71k) was less than totalCacheCreationTokens (1.35M).
Tested:
- All 1134 unit tests pass
- Cache metrics API returns correct totals
- Migration is idempotent and tracked in _omniroute_migrations
- Logs show cache read tokens: 'in=6055 | out=211 | CR=22399'
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
