v2026.4.8

Added

• Cost tracking and budget enforcement -- per-run USD cost estimation using genai-prices, max_cost_usd budget guardrail that halts runs exceeding threshold, cost column in audit records
• Cost analytics page -- dedicated /cost dashboard page with sortable tables for per-agent, per-model, and per-day cost breakdowns
• Unified bottom panel with cost -- agent, flow, and team run views share one bottom panel showing token counts, cost, and tool activity
• Usage SSE event for flow/team streams -- usage event emitted on stream completion with token counts and cost, matching the agent stream contract
• Real-time tool event visibility for flows and teams -- tool call start/complete events streamed via SSE for flow and team runs, not just standalone agents

Fixed

• Tool activity sidebar layout -- flow and team panels now use CSS grid with bounded max-height to prevent overflow