Campaign-level analytics overview including conversion, revenue, cost, and ROI
GET /api/campaigns/{campaignId}/analytics/overviewdays (1..365, default 30)start (optional)end (optional)GET /api/campaigns/{campaignId}/analytics/timeseriesGET /api/campaigns/{campaignId}/analytics/linksGET /api/campaigns/{campaignId}/analytics/rulesGET /api/campaigns/{campaignId}/analytics/funnel (revenueTracking)GET /api/campaigns/{campaignId}/analytics/conversions (revenueTracking)analytics:readfunnel and conversions require revenue-tracking featurecpc: clicks * costOverridecpm: (clicks / 1000) * costOverridecpa: conversions * costOverriderevshare: (revenue * costOverride) / 100404: campaign not found500: analytics backend/query failure