fix(chart): keep account and chart-view birth truth consistent

frontend/src/lib/chart-view-load.ts

@@ -1,4 +1,7 @@
+import { ZodError } from "zod";
+
 import { resolveAyanamsa } from "./ayanamsa.ts";
+import type { ChartBirthFailureReason } from "./chart-birth-truth.ts";
 import {
   chartViewMessageSchema,
   type ChartViewResponse,
@@ -9,6 +12,7 @@ import {
   type ChartViewLayer,
   type EngineCallResult,
 } from "./chart-view-engine.ts";
+import { chartViewFailureResponse } from "./chart-view-failure.ts";
 import { CHART_VIEW_COPY, VARGA_CHIP_ORDER } from "./chart-view-labels.ts";
 import {
   buildChartView,
@@ -28,13 +32,31 @@ export type ChartViewLoadInput = {
   asOf: string;
   rateLimited?: boolean;
   layers?: readonly ChartViewLayer[];
+  accountId?: string | null;
+  profileFingerprint?: string | null;
 };
 
 function message(
   status: "unauthenticated" | "birth_profile_incomplete" | "chart_unavailable" | "rate_limited",
   copy: string,
+  reason?: ChartBirthFailureReason,
 ): ChartViewResponse {
-  return chartViewMessageSchema.parse({ status, billed: false, message: copy });
+  return chartViewMessageSchema.parse({ status, billed: false, message: copy, reason });
+}
+
+function stamp(body: ChartViewResponse, input: ChartViewLoadInput): ChartViewResponse {
+  return {
+    ...body,
+    ...(input.accountId ? { accountId: input.accountId } : {}),
+    ...(input.profileFingerprint ? { profileFingerprint: input.profileFingerprint } : {}),
+  };
+}
+
+function engineFailureReason(status: Exclude<EngineCallResult["status"], "ok">): ChartBirthFailureReason {
+  if (status === "busy") return "engine_busy";
+  if (status === "timeout") return "engine_timeout";
+  if (status === "bad_payload") return "engine_bad_payload";
+  return "engine_http_error";
 }
 
 function birthPayload(profile: ChartViewProfileInput): Record<string, unknown> {
@@ -87,14 +109,14 @@ export async function assembleChartView(input: ChartViewLoadInput): Promise<{
   if (input.rateLimited) {
     return {
       httpStatus: 429,
-      body: message("rate_limited", CHART_VIEW_COPY.rateLimited),
+      body: stamp(message("rate_limited", CHART_VIEW_COPY.rateLimited), input),
     };
   }
   const profile = input.profile;
   if (!profile) {
     return {
       httpStatus: 200,
-      body: message("birth_profile_incomplete", CHART_VIEW_COPY.incomplete),
+      body: stamp(chartViewFailureResponse("profile_incomplete"), input),
     };
   }
 
@@ -103,10 +125,7 @@ export async function assembleChartView(input: ChartViewLoadInput): Promise<{
   if (chartResult.status !== "ok") {
     return {
       httpStatus: 200,
-      body: message(
-        "chart_unavailable",
-        chartResult.status === "busy" ? CHART_VIEW_COPY.busy : CHART_VIEW_COPY.unavailable,
-      ),
+      body: stamp(chartViewFailureResponse(engineFailureReason(chartResult.status)), input),
     };
   }
   const chart = chartResult.payload;
@@ -119,7 +138,7 @@ export async function assembleChartView(input: ChartViewLoadInput): Promise<{
     });
     return {
       httpStatus: 200,
-      body: message("chart_unavailable", CHART_VIEW_COPY.unavailable),
+      body: stamp(chartViewFailureResponse("engine_bad_payload"), input),
     };
   }
 
@@ -165,14 +184,15 @@ export async function assembleChartView(input: ChartViewLoadInput): Promise<{
       profile,
       asOf: input.asOf,
     });
-    return { httpStatus: 200, body };
+    return { httpStatus: 200, body: stamp(body, input) };
   } catch (error) {
     const errorName = error instanceof Error ? error.name : "Error";
     const errorMessage = error instanceof Error ? error.message : "unknown";
     console.warn("chart_view_assemble_failed", { errorName, message: errorMessage });
+    const reason = error instanceof ZodError ? "response_schema_failure" : "engine_bad_payload";
     return {
       httpStatus: 200,
-      body: message("chart_unavailable", CHART_VIEW_COPY.unavailable),
+      body: stamp(chartViewFailureResponse(reason), input),
     };
   }
 }