fix: address web seam review findings

packages/web/web-search-deepseek/src/index.ts

@@ -64,18 +64,20 @@ export const Config: z<Config> = z.object({
   baseURL: z.string(),
   model: z.string(),
   apiVersion: z.string(),
-  maxTokens: z.natural(),
-  maxUses: z.natural(),
+  maxTokens: z.number().step(1).min(1),
+  maxUses: z.number().step(1).min(1),
 })
 
 /** Register the DeepSeek search provider with `ctx.web`. */
 export function apply(ctx: Context, config: Config): void {
+  const maxTokens = config.maxTokens ?? DEEPSEEK_DEFAULT_MAX_TOKENS
+  const maxUses = config.maxUses ?? DEEPSEEK_DEFAULT_MAX_USES
   ctx.web.registerSearchProvider(new DeepSeekSearchProvider({
     apiKey: config.apiKey ?? process.env.DEEPSEEK_API_KEY ?? '',
     baseURL: config.baseURL ?? DEEPSEEK_DEFAULT_BASE_URL,
     model: config.model ?? DEEPSEEK_DEFAULT_MODEL,
     apiVersion: config.apiVersion ?? DEEPSEEK_DEFAULT_API_VERSION,
-    maxTokens: config.maxTokens ?? DEEPSEEK_DEFAULT_MAX_TOKENS,
-    maxUses: config.maxUses ?? DEEPSEEK_DEFAULT_MAX_USES,
+    maxTokens,
+    maxUses,
   }))
 }

packages/web/web-search-deepseek/src/provider.ts

@@ -147,6 +147,7 @@ export class DeepSeekSearchProvider implements WebSearchProvider {
   status(): WebProviderStatus {
     if (this.options.apiKey.length === 0) return { available: false, reason: 'missing-credential' }
     if (!URL.canParse(this.options.baseURL)) return { available: false, reason: 'misconfigured' }
+    if (!isPositiveInteger(this.options.maxTokens) || !isPositiveInteger(this.options.maxUses)) return { available: false, reason: 'misconfigured' }
     return { available: true }
   }
 
@@ -215,3 +216,8 @@ export class DeepSeekSearchProvider implements WebSearchProvider {
 function isAbortError(error: unknown): boolean {
   return error instanceof DOMException && error.name === 'AbortError'
 }
+
+/** True for DeepSeek request limits that can be sent to the Messages API. */
+function isPositiveInteger(value: number): boolean {
+  return Number.isInteger(value) && value > 0
+}