Let temperature formatting ship without dashboard bulk

Temperature formatting was embedded in the large dashboard utility module, so small scan-terminal views had to import the heavy utility surface for simple labels. This moves the pure temperature helpers into a lightweight module while keeping dashboard-utils re-exports for compatibility.

Constraint: Preserve existing temperature text output and all dashboard-utils import compatibility.

Rejected: Split chart, pace, and model helpers in the same pass | those helpers have wider coupling and should move one boundary at a time.

Confidence: high

Scope-risk: narrow

Reversibility: clean

Tested: TypeScript diagnostics for temperature-utils, dashboard-utils, and OpportunityTable

Tested: npm run build

Not-tested: Bundle analyzer size comparison.

frontend/components/dashboard/OpportunityTable.tsx

@@ -9,13 +9,15 @@ import type {
 } from "@/lib/dashboard-types";
 import { getLocalizedCityName } from "@/lib/dashboard-home-copy";
 import {
-  formatTemperatureValue,
   getModelView,
   getProbabilityView,
   getTodayPaceView,
+} from "@/lib/dashboard-utils";
+import {
+  formatTemperatureValue,
   normalizeTemperatureLabel,
   normalizeTemperatureSymbol,
-} from "@/lib/dashboard-utils";
+} from "@/lib/temperature-utils";
 
 type PhaseMeta = {
   label: string;

frontend/components/dashboard/scan-terminal/AiForecastKPIBar.tsx

@@ -1,5 +1,6 @@
 import type { CityDetail, ScanOpportunityRow } from "@/lib/dashboard-types";
-import { formatTemperatureValue, getTodayPaceView } from "@/lib/dashboard-utils";
+import { getTodayPaceView } from "@/lib/dashboard-utils";
+import { formatTemperatureValue } from "@/lib/temperature-utils";
 import { getPeakWindowLabel } from "@/components/dashboard/scan-terminal/decision-utils";
 
 export function AiForecastKPIBar({

frontend/components/dashboard/scan-terminal/AiPinnedCityCard.tsx

@@ -21,7 +21,8 @@ import {
   useCityMarketScan,
 } from "@/components/dashboard/scan-terminal/use-ai-city-card-data";
 import type { CityDetail, ScanOpportunityRow } from "@/lib/dashboard-types";
-import { formatTemperatureValue, getModelView, getTodayPaceView } from "@/lib/dashboard-utils";
+import { getModelView, getTodayPaceView } from "@/lib/dashboard-utils";
+import { formatTemperatureValue } from "@/lib/temperature-utils";
 
 function toFiniteDecisionNumber(value: unknown) {
   if (value == null || value === "") return null;

frontend/components/dashboard/scan-terminal/CalendarView.tsx

@@ -2,7 +2,7 @@ import { memo, useEffect, useMemo, useState } from "react";
 import { getWindowPhaseMeta } from "@/components/dashboard/OpportunityTable";
 import type { ScanOpportunityRow } from "@/lib/dashboard-types";
 import { getLocalizedCityName } from "@/lib/dashboard-home-copy";
-import { formatTemperatureValue } from "@/lib/dashboard-utils";
+import { formatTemperatureValue } from "@/lib/temperature-utils";
 import {
   formatShortDate,
   getPeakCountdownMeta,

frontend/components/dashboard/scan-terminal/OpportunityOverview.tsx

@@ -1,7 +1,7 @@
 import { memo, useMemo } from "react";
 import clsx from "clsx";
 import type { ScanOpportunityRow, ScanTerminalResponse } from "@/lib/dashboard-types";
-import { formatTemperatureValue } from "@/lib/dashboard-utils";
+import { formatTemperatureValue } from "@/lib/temperature-utils";
 import { LoadingSignal } from "@/components/dashboard/scan-terminal/LoadingSignal";
 import {
   formatRowPrice,

frontend/components/dashboard/scan-terminal/city-card-decision-utils.ts

@@ -1,9 +1,9 @@
 import type { MarketScan, MarketTopBucket } from "@/lib/dashboard-types";
+import { getTodayPaceView } from "@/lib/dashboard-utils";
 import {
   formatTemperatureValue,
-  getTodayPaceView,
   normalizeTemperatureLabel,
-} from "@/lib/dashboard-utils";
+} from "@/lib/temperature-utils";
 import type { AiCityForecastPayload } from "@/components/dashboard/scan-terminal/types";
 
 export type WeatherDecisionView = {