refactor(shared): centralize assistant identity and usage timeseries types

ui/src/ui/assistant-identity.ts

@@ -1,3 +1,5 @@
+import { coerceIdentityValue } from "../../../src/shared/assistant-identity-values.js";
+
 const MAX_ASSISTANT_NAME = 50;
 const MAX_ASSISTANT_AVATAR = 200;
 
@@ -10,20 +12,6 @@ export type AssistantIdentity = {
   avatar: string | null;
 };
 
-function coerceIdentityValue(value: string | undefined, maxLength: number): string | undefined {
-  if (typeof value !== "string") {
-    return undefined;
-  }
-  const trimmed = value.trim();
-  if (!trimmed) {
-    return undefined;
-  }
-  if (trimmed.length <= maxLength) {
-    return trimmed;
-  }
-  return trimmed.slice(0, maxLength);
-}
-
 export function normalizeAssistantIdentity(
   input?: Partial<AssistantIdentity> | null,
 ): AssistantIdentity {

ui/src/ui/usage-types.ts

@@ -1,3 +1,7 @@
+import type {
+  SessionUsageTimePoint as SharedSessionUsageTimePoint,
+  SessionUsageTimeSeries as SharedSessionUsageTimeSeries,
+} from "../../../src/shared/session-usage-timeseries-types.js";
 import type { SessionsUsageResult as SharedSessionsUsageResult } from "../../../src/shared/usage-types.js";
 
 export type SessionsUsageEntry = SharedSessionsUsageResult["sessions"][number];
@@ -13,19 +17,6 @@ export type CostUsageSummary = {
   totals: SessionsUsageTotals;
 };
 
-export type SessionUsageTimePoint = {
-  timestamp: number;
-  input: number;
-  output: number;
-  cacheRead: number;
-  cacheWrite: number;
-  totalTokens: number;
-  cost: number;
-  cumulativeTokens: number;
-  cumulativeCost: number;
-};
+export type SessionUsageTimePoint = SharedSessionUsageTimePoint;
 
-export type SessionUsageTimeSeries = {
-  sessionId?: string;
-  points: SessionUsageTimePoint[];
-};
+export type SessionUsageTimeSeries = SharedSessionUsageTimeSeries;