fix(ai-openrouter): restore OpenRouterChatModelToolCapabilitiesByName (#582)

The mapped type was hand-added in #466 but never wired into the
OpenRouter model generator. PR #581's wholesale regeneration dropped it,
breaking the build and typecheck on main (index.ts, text.ts,
responses-text.ts all import it).

- Emit the type from scripts/convert-openrouter-models.ts so future
  syncs preserve it.
- Restore the missing block in model-meta.ts (matches what the fixed
  generator now produces).

Author: AlemTuzlak

.changeset/openrouter-restore-tool-capabilities.md

@@ -0,0 +1,5 @@
+---
+'@tanstack/ai-openrouter': patch
+---
+
+Restore `OpenRouterChatModelToolCapabilitiesByName` export in `model-meta.ts` and emit it from the OpenRouter model generator so future syncs don't drop it.

packages/typescript/ai-openrouter/src/model-meta.ts

@@ -16251,6 +16251,10 @@ export const OPENROUTER_CHAT_MODELS = [
   'openrouter/auto',
 ] as const
 
+export type OpenRouterChatModelToolCapabilitiesByName = {
+  [K in (typeof OPENROUTER_CHAT_MODELS)[number]]: readonly ['web_search']
+}
+
 export const OPENROUTER_IMAGE_MODELS = [
   GOOGLE_GEMINI_2_5_FLASH_IMAGE.id,
   GOOGLE_GEMINI_3_PRO_IMAGE_PREVIEW.id,

scripts/convert-openrouter-models.ts

@@ -64,6 +64,19 @@ function generateChatModelsArray(): string {
     .join('\n')}\n] as const`
 }
 
+/**
+ * OpenRouter's web_search plugin works across all chat models via the gateway,
+ * so the tool-capability map is structural and identical for every chat model.
+ * Emitted as a mapped type to stay in sync with OPENROUTER_CHAT_MODELS without
+ * touching each model constant.
+ */
+function generateChatToolCapabilitiesType(): string {
+  if (chatModels.size === 0) {
+    return ''
+  }
+  return `export type OpenRouterChatModelToolCapabilitiesByName = {\n  [K in (typeof OPENROUTER_CHAT_MODELS)[number]]: readonly ['web_search']\n}`
+}
+
 function generateImageModelsArray(): string {
   const modelIds = Array.from(imageModels)
   if (modelIds.length === 0) {
@@ -306,6 +319,8 @@ ${createPerModelModelOptions()}
 ${createPerModelInputModalities()}
 
 ${generateChatModelsArray()}
+
+${generateChatToolCapabilitiesType()}
 ${generateVideoModelsArray()}
 ${generateImageModelsArray()}
 `