feat(desktop): aggregate routing logs into daily and weekly token rollups

crates/switchyard-desktop/src/history.rs

@@ -0,0 +1,33 @@
+// SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+//! This module describes one completed model call in the routing log.
+
+use serde::Deserialize;
+
+#[derive(Debug, Deserialize, serde::Serialize)]
+pub struct Entry {
+    pub ts: String,
+    pub model: String,
+    #[serde(default)]
+    pub session_id: Option<String>,
+    #[serde(default)]
+    pub turn_id: Option<String>,
+    #[serde(default)]
+    pub route_id: String,
+    #[serde(default)]
+    pub tier: String,
+    #[serde(default)]
+    pub prompt_tokens: u64,
+    #[serde(default)]
+    pub cached_tokens: u64,
+    #[serde(default)]
+    pub cache_creation_tokens: u64,
+    #[serde(default)]
+    pub cache_creation_1h_tokens: u64,
+    #[serde(default)]
+    pub completion_tokens: u64,
+    /// The server records the charge or estimate when it has rates; older records have none.
+    #[serde(default)]
+    pub cost: Option<switchyard_costs::RecordedCost>,
+}

crates/switchyard-desktop/src/lib.rs

@@ -5,4 +5,6 @@
 
 pub mod config;
 pub mod health;
+pub mod history;
 pub mod install;
+pub mod rollup;