Remove cost stat card from dashboard

Hermes cost tracking returns $0.00 for models not in its static
pricing table (including claude-haiku-4-5). Token counts remain
displayed since those are always accurate.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

README.md

@@ -17,7 +17,7 @@
 
 ## Features
 
-- **Dashboard** — System health, token usage, cost tracking, recent sessions at a glance
+- **Dashboard** — System health, token usage, recent sessions at a glance
 - **Sessions Browser** — Full conversation history with message rendering, tool call inspection, and full-text search (FTS5)
 - **Activity Feed** — Recent tool execution log with filtering by kind (read/edit/execute/fetch/browser) and detail inspector
 - **Live Chat** — Embedded terminal running `hermes chat` with full ANSI color and Rich formatting via [SwiftTerm](https://github.com/migueldeicaza/SwiftTerm)

scarf/scarf/Features/Dashboard/Views/DashboardView.swift

@@ -56,7 +56,6 @@ struct DashboardView: View {
                 StatCard(label: "Messages", value: "\(viewModel.stats.totalMessages)")
                 StatCard(label: "Tool Calls", value: "\(viewModel.stats.totalToolCalls)")
                 StatCard(label: "Tokens", value: formatTokens(viewModel.stats.totalInputTokens + viewModel.stats.totalOutputTokens))
-                StatCard(label: "Est. Cost", value: String(format: "$%.2f", viewModel.stats.totalCostUSD))
             }
         }
     }