cleanup(environment): keep one lookup order

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

@@ -90,12 +90,12 @@ export function apply(ctx: Context, config: Config): void {
       const credentials = ctx.get('credentials')
       if (credentials !== undefined) return (await credentials.resolve(apiKeyEnv))?.value
       // Without the seam the environment is the whole credential plane.
-      const ambient = environmentOf(ctx).getFrom(apiKeyEnv, ['process', 'project-env', 'user-env'])
+      const ambient = environmentOf(ctx).get(apiKeyEnv)
       return ambient !== undefined && ambient.value.length > 0 ? ambient.value : undefined
     },
     apiKeyEnv,
     baseURL: config.baseURL
-      ?? environmentOf(ctx).getFrom(SEARCH_BASE_URL_ENV, ['process', 'project-env', 'user-env'])?.value
+      ?? environmentOf(ctx).get(SEARCH_BASE_URL_ENV)?.value
       ?? DEEPSEEK_DEFAULT_BASE_URL,
     model: config.model ?? DEEPSEEK_DEFAULT_MODEL,
     apiVersion: config.apiVersion ?? DEEPSEEK_DEFAULT_API_VERSION,

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

@@ -61,7 +61,7 @@ export function apply(ctx: Context, config: Config): void {
   ctx.web.registerSearchProvider(new ExaSearchProvider({
     // Every environment layer may name this key: the product trusts the
     // project it is launched in, and the managed store is not involved here.
-    apiKey: config.apiKey ?? environmentOf(ctx).getFrom('EXA_API_KEY', ['process', 'project-env', 'user-env'])?.value ?? '',
+    apiKey: config.apiKey ?? environmentOf(ctx).get('EXA_API_KEY')?.value ?? '',
     baseURL: config.baseURL ?? EXA_DEFAULT_BASE_URL,
     searchType: config.searchType ?? EXA_DEFAULT_SEARCH_TYPE,
     highlightsPerResult: config.highlightsPerResult ?? EXA_DEFAULT_HIGHLIGHTS_PER_RESULT,

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

@@ -55,7 +55,7 @@ export function apply(ctx: Context, config: Config): void {
   ctx.web.registerSearchProvider(new PerplexitySearchProvider({
     // Every environment layer may name this key: the product trusts the
     // project it is launched in, and the managed store is not involved here.
-    apiKey: config.apiKey ?? environmentOf(ctx).getFrom('PERPLEXITY_API_KEY', ['process', 'project-env', 'user-env'])?.value ?? '',
+    apiKey: config.apiKey ?? environmentOf(ctx).get('PERPLEXITY_API_KEY')?.value ?? '',
     baseURL: config.baseURL ?? PERPLEXITY_DEFAULT_BASE_URL,
     model: config.model ?? PERPLEXITY_DEFAULT_MODEL,
     maxTokens: config.maxTokens ?? PERPLEXITY_DEFAULT_MAX_TOKENS,