refactor(provider): complete host-match dedupe, rename usage formatter

Author: TheGreatAxios

packages/opencode-go/src/models.ts

@@ -63,9 +63,10 @@ export const OPENCODE_GO_MODEL_IDS: readonly string[] = OPENCODE_GO_MODELS.map(
 
 export const OPENCODE_GO_DEFAULT_MODEL: GoModelId = "kimi-k2.7-code";
 
-export const PROTOCOL_BY_ID = new Map<string, GoProtocol>(
-  OPENCODE_GO_MODELS.map((m) => [m.id, m.protocol]),
-);
+export const PROTOCOL_BY_ID: ReadonlyMap<string, GoProtocol> = new Map<
+  string,
+  GoProtocol
+>(OPENCODE_GO_MODELS.map((m) => [m.id, m.protocol]));
 
 export function protocolForGoModel(modelId: string): GoProtocol | undefined {
   return PROTOCOL_BY_ID.get(modelId);

packages/opencode-go/src/usage.ts

@@ -99,7 +99,7 @@ export async function fetchGoUsage(
   }
 }
 
-function formatUsagePercent(w: GoUsageWindow): string {
+function formatWindowUsage(w: GoUsageWindow): string {
   if (w.usagePercent !== undefined) return `${Math.round(w.usagePercent)}%`;
   if (w.usageDollars !== undefined && w.limitDollars !== undefined) {
     return `$${w.usageDollars.toFixed(2)}/$${w.limitDollars.toFixed(0)}`;
@@ -123,5 +123,5 @@ export function formatGoUsage(usage: GoUsage): string {
   }
   const w = usage.rolling5h ?? usage.weekly ?? usage.monthly;
   if (w === undefined) return "Go usage ok";
-  return `Go ${usageWindowLabel(usage)} ${formatUsagePercent(w)}`;
+  return `Go ${usageWindowLabel(usage)} ${formatWindowUsage(w)}`;
 }

src/provider/billing-product.ts

@@ -1,4 +1,5 @@
 import {
+  hostMatchesOpencodeDotAi,
   isKnownGoModel,
   isOpenCodeGoProvider,
 } from "../../packages/opencode-go/src/index.js";
@@ -25,10 +26,7 @@ export function isBareZenBaseURL(baseURL: string): boolean {
   if (BARE_ZEN_BASES.has(trimmed)) return true;
   try {
     const url = new URL(trimmed);
-    if (
-      url.hostname !== "opencode.ai" &&
-      !url.hostname.endsWith(".opencode.ai")
-    ) {
+    if (!hostMatchesOpencodeDotAi(url.hostname)) {
       return false;
     }
     const path = url.pathname.replace(/\/+$/, "");