/**
 * Deploy-provider detection (issue #417).
 *
 * `isServerless()` collapses every serverless env to a single boolean;
 * this returns the discriminated identity so `@Tool({ availableWhen: {
 * provider: ['vercel'] } })` can express provider-specific rules.
 *
 * Order matters — first match wins. A user can override detection by
 * setting `FRONTMCP_PROVIDER=<name>` explicitly (used by tests and by
 * Docker images that don't expose a discriminating env var).
 */
export type DeployProvider = 'bare' | 'docker' | 'vercel' | 'lambda' | 'cloudflare' | 'netlify' | 'azure' | 'gcp' | 'fly' | 'render' | 'railway';
/**
 * Detect the current deploy provider. Cached per process.
 *
 * Detection rules (first match wins):
 *
 *   1. `FRONTMCP_PROVIDER` env var (override; trust whatever the operator set).
 *   2. `VERCEL` env var → `'vercel'`.
 *   3. `AWS_LAMBDA_FUNCTION_NAME` → `'lambda'`.
 *   4. `CF_PAGES` → `'cloudflare'`.
 *   5. `NETLIFY` → `'netlify'`.
 *   6. `AZURE_FUNCTIONS_ENVIRONMENT` → `'azure'`.
 *   7. `K_SERVICE` (Cloud Run / Knative) → `'gcp'`.
 *   8. `FLY_APP_NAME` → `'fly'`.
 *   9. `RENDER` → `'render'`.
 *  10. `RAILWAY_ENVIRONMENT` → `'railway'`.
 *  11. `/.dockerenv` exists → `'docker'`.
 *  12. Fallback: `'bare'`.
 */
export declare function detectProvider(): DeployProvider;
/** Test helper — reset the cache between specs. */
export declare function resetProviderCacheForTesting(): void;