import { z } from 'zod';
type PathJoiner = (...paths: string[]) => string;
type StoragePathConfig = {
    DATA_DIR: string;
    SQLITE_PATH?: string;
    ARTIFACT_DIR?: string;
    CACHE_DIR?: string;
};
export declare function deriveStoragePaths<T extends StoragePathConfig>(config: T, joinPath?: PathJoiner): T & {
    SQLITE_PATH: string;
    ARTIFACT_DIR: string;
    CACHE_DIR: string;
};
export declare function getEnvironmentVariableNames(): readonly string[];
export declare const EnvSchema: z.ZodPipe<z.ZodObject<{
    NODE_ENV: z.ZodDefault<z.ZodEnum<{
        development: "development";
        test: "test";
        production: "production";
    }>>;
    LOG_LEVEL: z.ZodDefault<z.ZodEnum<{
        trace: "trace";
        debug: "debug";
        info: "info";
        warn: "warn";
        error: "error";
        fatal: "fatal";
        silent: "silent";
    }>>;
    TOOL_PROFILE: z.ZodDefault<z.ZodEnum<{
        core: "core";
        pro: "pro";
        full: "full";
        dev: "dev";
        experimental: "experimental";
    }>>;
    TOOL_SCOPES: z.ZodDefault<z.ZodString>;
    MCP_PROTOCOL_VERSION: z.ZodDefault<z.ZodString>;
    MCP_BRIDGE_BACKEND: z.ZodDefault<z.ZodEnum<{
        local_bridge: "local_bridge";
        remote_relay: "remote_relay";
    }>>;
    MCP_REMOTE_SESSION_ID: z.ZodDefault<z.ZodString>;
    TRANSPORT: z.ZodDefault<z.ZodEnum<{
        stdio: "stdio";
        http: "http";
    }>>;
    HTTP_HOST: z.ZodDefault<z.ZodString>;
    HTTP_PORT: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    HTTP_AUTH_DISABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    HTTP_RATE_LIMIT_MAX: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    CORS_ORIGIN: z.ZodDefault<z.ZodString>;
    ALLOWED_ORIGINS: z.ZodDefault<z.ZodString>;
    MCP_TASKS_ENABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    MCP_APPS_ENABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    MCP_V2_EXPERIMENTAL: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    MCP_RAW_EXEC_EXPERIMENTAL: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    BRIDGE_HOST: z.ZodDefault<z.ZodString>;
    BRIDGE_PORT: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    BRIDGE_PORT_SCAN: z.ZodDefault<z.ZodString>;
    BRIDGE_TIMEOUT_MS: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    BRIDGE_HEARTBEAT_MS: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    BRIDGE_WAIT_FOR_EDA_MS: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    BRIDGE_MAX_PAYLOAD_SIZE: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    BRIDGE_TOKEN: z.ZodDefault<z.ZodString>;
    EASYEDA_DEV_BRIDGE: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    BRIDGE_RAW_EXEC_ENABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    BRIDGE_HOT_SWAP_ENABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    BRIDGE_HOT_SWAP_WATCH: z.ZodDefault<z.ZodString>;
    BRIDGE_HOT_SWAP_CHUNK_BYTES: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    DATA_DIR: z.ZodDefault<z.ZodString>;
    SQLITE_PATH: z.ZodOptional<z.ZodString>;
    ARTIFACT_DIR: z.ZodOptional<z.ZodString>;
    CACHE_DIR: z.ZodOptional<z.ZodString>;
    AI_PROVIDER: z.ZodDefault<z.ZodEnum<{
        none: "none";
        anthropic: "anthropic";
        openai: "openai";
        openrouter: "openrouter";
        local: "local";
    }>>;
    AI_MODEL: z.ZodDefault<z.ZodString>;
    AI_API_KEY: z.ZodDefault<z.ZodString>;
    AI_MAX_TOKENS: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    AI_TIMEOUT_MS: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    AI_ALLOW_DESIGN_MUTATIONS: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    JLCPCB_MODE: z.ZodDefault<z.ZodEnum<{
        disabled: "disabled";
        mock: "mock";
        approved_api: "approved_api";
    }>>;
    JLCPCB_CLIENT_ID: z.ZodDefault<z.ZodString>;
    JLCPCB_CLIENT_SECRET: z.ZodDefault<z.ZodString>;
    JLCPCB_API_BASE_URL: z.ZodDefault<z.ZodString>;
    JLCPCB_ENABLE_ORDERING: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    JLCSEARCH_ENABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    JLCSEARCH_BASE_URL: z.ZodDefault<z.ZodString>;
    LCSC_API_KEY: z.ZodDefault<z.ZodString>;
    KEYLESS_SOURCING_ENABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    SOURCING_CACHE_TTL_SECONDS: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    VENDOR_MIN_REQUEST_INTERVAL_MS: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
    MOUSER_ENABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    MOUSER_API_KEY: z.ZodDefault<z.ZodString>;
    MOUSER_API_BASE_URL: z.ZodDefault<z.ZodString>;
    DIGIKEY_ENABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    DIGIKEY_CLIENT_ID: z.ZodDefault<z.ZodString>;
    DIGIKEY_CLIENT_SECRET: z.ZodDefault<z.ZodString>;
    DIGIKEY_SANDBOX: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    DIGIKEY_LOCALE: z.ZodDefault<z.ZodString>;
    DIGIKEY_CURRENCY: z.ZodDefault<z.ZodString>;
    OAUTH_ENABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    OAUTH_ISSUER: z.ZodDefault<z.ZodString>;
    OAUTH_AUDIENCE: z.ZodDefault<z.ZodString>;
    OAUTH_JWKS_URI: z.ZodDefault<z.ZodString>;
    OAUTH_REQUIRED_SCOPES: z.ZodDefault<z.ZodString>;
    OTEL_ENABLED: z.ZodDefault<z.ZodPipe<z.ZodUnion<readonly [z.ZodBoolean, z.ZodString]>, z.ZodTransform<boolean, string | boolean>>>;
    OTEL_SERVICE_NAME: z.ZodDefault<z.ZodString>;
    OTEL_EXPORTER_OTLP_ENDPOINT: z.ZodDefault<z.ZodString>;
    TRACE_SAMPLE_RATE: z.ZodDefault<z.ZodCoercedNumber<unknown>>;
}, z.core.$strip>, z.ZodTransform<{
    NODE_ENV: "development" | "test" | "production";
    LOG_LEVEL: "trace" | "debug" | "info" | "warn" | "error" | "fatal" | "silent";
    TOOL_PROFILE: "core" | "pro" | "full" | "dev" | "experimental";
    TOOL_SCOPES: string;
    MCP_PROTOCOL_VERSION: string;
    MCP_BRIDGE_BACKEND: "local_bridge" | "remote_relay";
    MCP_REMOTE_SESSION_ID: string;
    TRANSPORT: "stdio" | "http";
    HTTP_HOST: string;
    HTTP_PORT: number;
    HTTP_AUTH_DISABLED: boolean;
    HTTP_RATE_LIMIT_MAX: number;
    CORS_ORIGIN: string;
    ALLOWED_ORIGINS: string;
    MCP_TASKS_ENABLED: boolean;
    MCP_APPS_ENABLED: boolean;
    MCP_V2_EXPERIMENTAL: boolean;
    MCP_RAW_EXEC_EXPERIMENTAL: boolean;
    BRIDGE_HOST: string;
    BRIDGE_PORT: number;
    BRIDGE_PORT_SCAN: string;
    BRIDGE_TIMEOUT_MS: number;
    BRIDGE_HEARTBEAT_MS: number;
    BRIDGE_WAIT_FOR_EDA_MS: number;
    BRIDGE_MAX_PAYLOAD_SIZE: number;
    BRIDGE_TOKEN: string;
    EASYEDA_DEV_BRIDGE: boolean;
    BRIDGE_RAW_EXEC_ENABLED: boolean;
    BRIDGE_HOT_SWAP_ENABLED: boolean;
    BRIDGE_HOT_SWAP_WATCH: string;
    BRIDGE_HOT_SWAP_CHUNK_BYTES: number;
    DATA_DIR: string;
    AI_PROVIDER: "none" | "anthropic" | "openai" | "openrouter" | "local";
    AI_MODEL: string;
    AI_API_KEY: string;
    AI_MAX_TOKENS: number;
    AI_TIMEOUT_MS: number;
    AI_ALLOW_DESIGN_MUTATIONS: boolean;
    JLCPCB_MODE: "disabled" | "mock" | "approved_api";
    JLCPCB_CLIENT_ID: string;
    JLCPCB_CLIENT_SECRET: string;
    JLCPCB_API_BASE_URL: string;
    JLCPCB_ENABLE_ORDERING: boolean;
    JLCSEARCH_ENABLED: boolean;
    JLCSEARCH_BASE_URL: string;
    LCSC_API_KEY: string;
    KEYLESS_SOURCING_ENABLED: boolean;
    SOURCING_CACHE_TTL_SECONDS: number;
    VENDOR_MIN_REQUEST_INTERVAL_MS: number;
    MOUSER_ENABLED: boolean;
    MOUSER_API_KEY: string;
    MOUSER_API_BASE_URL: string;
    DIGIKEY_ENABLED: boolean;
    DIGIKEY_CLIENT_ID: string;
    DIGIKEY_CLIENT_SECRET: string;
    DIGIKEY_SANDBOX: boolean;
    DIGIKEY_LOCALE: string;
    DIGIKEY_CURRENCY: string;
    OAUTH_ENABLED: boolean;
    OAUTH_ISSUER: string;
    OAUTH_AUDIENCE: string;
    OAUTH_JWKS_URI: string;
    OAUTH_REQUIRED_SCOPES: string;
    OTEL_ENABLED: boolean;
    OTEL_SERVICE_NAME: string;
    OTEL_EXPORTER_OTLP_ENDPOINT: string;
    TRACE_SAMPLE_RATE: number;
    SQLITE_PATH?: string | undefined;
    ARTIFACT_DIR?: string | undefined;
    CACHE_DIR?: string | undefined;
} & {
    SQLITE_PATH: string;
    ARTIFACT_DIR: string;
    CACHE_DIR: string;
}, {
    NODE_ENV: "development" | "test" | "production";
    LOG_LEVEL: "trace" | "debug" | "info" | "warn" | "error" | "fatal" | "silent";
    TOOL_PROFILE: "core" | "pro" | "full" | "dev" | "experimental";
    TOOL_SCOPES: string;
    MCP_PROTOCOL_VERSION: string;
    MCP_BRIDGE_BACKEND: "local_bridge" | "remote_relay";
    MCP_REMOTE_SESSION_ID: string;
    TRANSPORT: "stdio" | "http";
    HTTP_HOST: string;
    HTTP_PORT: number;
    HTTP_AUTH_DISABLED: boolean;
    HTTP_RATE_LIMIT_MAX: number;
    CORS_ORIGIN: string;
    ALLOWED_ORIGINS: string;
    MCP_TASKS_ENABLED: boolean;
    MCP_APPS_ENABLED: boolean;
    MCP_V2_EXPERIMENTAL: boolean;
    MCP_RAW_EXEC_EXPERIMENTAL: boolean;
    BRIDGE_HOST: string;
    BRIDGE_PORT: number;
    BRIDGE_PORT_SCAN: string;
    BRIDGE_TIMEOUT_MS: number;
    BRIDGE_HEARTBEAT_MS: number;
    BRIDGE_WAIT_FOR_EDA_MS: number;
    BRIDGE_MAX_PAYLOAD_SIZE: number;
    BRIDGE_TOKEN: string;
    EASYEDA_DEV_BRIDGE: boolean;
    BRIDGE_RAW_EXEC_ENABLED: boolean;
    BRIDGE_HOT_SWAP_ENABLED: boolean;
    BRIDGE_HOT_SWAP_WATCH: string;
    BRIDGE_HOT_SWAP_CHUNK_BYTES: number;
    DATA_DIR: string;
    AI_PROVIDER: "none" | "anthropic" | "openai" | "openrouter" | "local";
    AI_MODEL: string;
    AI_API_KEY: string;
    AI_MAX_TOKENS: number;
    AI_TIMEOUT_MS: number;
    AI_ALLOW_DESIGN_MUTATIONS: boolean;
    JLCPCB_MODE: "disabled" | "mock" | "approved_api";
    JLCPCB_CLIENT_ID: string;
    JLCPCB_CLIENT_SECRET: string;
    JLCPCB_API_BASE_URL: string;
    JLCPCB_ENABLE_ORDERING: boolean;
    JLCSEARCH_ENABLED: boolean;
    JLCSEARCH_BASE_URL: string;
    LCSC_API_KEY: string;
    KEYLESS_SOURCING_ENABLED: boolean;
    SOURCING_CACHE_TTL_SECONDS: number;
    VENDOR_MIN_REQUEST_INTERVAL_MS: number;
    MOUSER_ENABLED: boolean;
    MOUSER_API_KEY: string;
    MOUSER_API_BASE_URL: string;
    DIGIKEY_ENABLED: boolean;
    DIGIKEY_CLIENT_ID: string;
    DIGIKEY_CLIENT_SECRET: string;
    DIGIKEY_SANDBOX: boolean;
    DIGIKEY_LOCALE: string;
    DIGIKEY_CURRENCY: string;
    OAUTH_ENABLED: boolean;
    OAUTH_ISSUER: string;
    OAUTH_AUDIENCE: string;
    OAUTH_JWKS_URI: string;
    OAUTH_REQUIRED_SCOPES: string;
    OTEL_ENABLED: boolean;
    OTEL_SERVICE_NAME: string;
    OTEL_EXPORTER_OTLP_ENDPOINT: string;
    TRACE_SAMPLE_RATE: number;
    SQLITE_PATH?: string | undefined;
    ARTIFACT_DIR?: string | undefined;
    CACHE_DIR?: string | undefined;
}>>;
export type EnvConfig = z.infer<typeof EnvSchema>;
export declare function detectUnknownEnvVars(env: Record<string, string | undefined>): string[];
export declare function loadEnvConfig(): EnvConfig;
export declare function getBridgePairingConfigIssue(config: EnvConfig): string | undefined;
export declare function getHttpSecurityConfigIssues(config: EnvConfig): string[];
export declare function validateSafeConfig(config: EnvConfig): void;
export {};