Analytics review fixes:
- Store Twitter analytics coverage as discrete intervals instead of a single
contiguous window so disjoint fetch ranges no longer mask inner gaps as
covered (fetch per uncovered range, add gap regression tests)
- Compute real AvgEngagement/Correlation in getEngagementDrivers instead of
all-zero placeholders
- Make parseAnalyticsTimeRange surface invalid timestamps, cap merged analytics
posts at limit, and normalize sentiment by timestamped posts only
- gofmt: fix misalignment in config.go and types.go
- Include Twitter in the default aggregate analytics scope; its API costs are
passed to the caller through paid tool pricing
x402 cost passing:
- computeTwitterStyleProfileCost now charges base cost ($0.10) + user lookup
($0.01) + $0.005 per Twitter post, guaranteeing the charge always clears the
underlying API cost (never break-even or loss)
- Return a $-prefixed dollar string for the settlement override, fixing the
previously off-by-factor-100 raw-atomic-unit amount
- Raise getStyleProfile base registration to $0.36 to authorize the max Twitter
charge
- Add tests for the cost formula, profitable floor, and dollar formatting
