fix(build): Gate build download command behind managed feature flag

The `build download` command uses `ProgressBarMode::Response` and
`BuildInstallDetails`, both of which are excluded from managed builds.
Gate the command module, API methods, and data types behind
`#[cfg(not(feature = "managed"))]` to match the existing pattern
used by `download_with_progress` and other interactive-only code.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: runningcode

src/api/data_types/chunking/build.rs

@@ -28,6 +28,7 @@ pub struct AssembleBuildResponse {
     pub artifact_url: Option<String>,
 }
 
+#[cfg(not(feature = "managed"))]
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct BuildInstallDetails {

src/api/data_types/chunking/mod.rs

@@ -10,7 +10,9 @@ mod hash_algorithm;
 mod upload;
 
 pub use self::artifact::{AssembleArtifactsResponse, ChunkedArtifactRequest};
-pub use self::build::{AssembleBuildResponse, BuildInstallDetails, ChunkedBuildRequest, VcsInfo};
+#[cfg(not(feature = "managed"))]
+pub use self::build::BuildInstallDetails;
+pub use self::build::{AssembleBuildResponse, ChunkedBuildRequest, VcsInfo};
 pub use self::compression::ChunkCompression;
 pub use self::dif::{AssembleDifsRequest, AssembleDifsResponse, ChunkedDifRequest};
 pub use self::file_state::ChunkedFileState;

src/api/mod.rs

@@ -723,6 +723,7 @@ impl AuthenticatedApi<'_> {
             .convert_rnf(ApiErrorKind::ProjectNotFound)
     }
 
+    #[cfg(not(feature = "managed"))]
     pub fn get_build_install_details(
         &self,
         org: &str,
@@ -737,6 +738,7 @@ impl AuthenticatedApi<'_> {
         self.get(&url)?.convert()
     }
 
+    #[cfg(not(feature = "managed"))]
     pub fn download_installable_build(&self, url: &str, dst: &mut File) -> ApiResult<ApiResponse> {
         self.request(Method::Get, url)?
             .progress_bar_mode(ProgressBarMode::Response)

src/commands/build/mod.rs

@@ -3,12 +3,14 @@ use clap::{ArgMatches, Command};
 
 use crate::utils::args::ArgExt as _;
 
+#[cfg(not(feature = "managed"))]
 pub mod download;
 pub mod snapshots;
 pub mod upload;
 
 macro_rules! each_subcommand {
     ($mac:ident) => {
+        #[cfg(not(feature = "managed"))]
         $mac!(download);
         $mac!(snapshots);
         $mac!(upload);