refactor(workspace): enforce layered crate boundaries

crates/aether-provider/transport/src/gemini_cli/mod.rs

@@ -0,0 +1,22 @@
+mod auth;
+mod policy;
+mod request;
+mod url;
+
+pub use auth::{
+    is_gemini_cli_provider_transport, resolve_gemini_cli_project_id,
+    resolve_local_gemini_cli_request_auth, GeminiCliRequestAuth, GeminiCliRequestAuthSupport,
+    GeminiCliRequestAuthUnsupportedReason, GEMINI_CLI_PROVIDER_TYPE,
+};
+pub use policy::gemini_cli_v1internal_requires_upstream_streaming;
+pub use request::{
+    build_gemini_cli_v1internal_request, classify_gemini_cli_v1internal_request_body,
+    GeminiCliRequestEnvelopeSupport, GeminiCliRequestEnvelopeUnsupportedReason,
+};
+pub use url::{
+    build_gemini_cli_v1internal_url, GeminiCliRequestUrlAction,
+    GEMINI_CLI_RETRIEVE_USER_QUOTA_PATH, GEMINI_CLI_USER_AGENT,
+    GEMINI_CLI_V1INTERNAL_PATH_TEMPLATE,
+};
+
+pub const GEMINI_CLI_V1INTERNAL_ENVELOPE_NAME: &str = "gemini_cli:v1internal";