fix(snapshots): Respect SENTRY_PROJECT env var in download command

Use config.get_project() instead of reading --project flag directly,
so the download command respects SENTRY_PROJECT env var and ini config
defaults like the build command does.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: NicoHinderling

src/commands/snapshots/download.rs

@@ -63,7 +63,7 @@ pub fn execute(matches: &ArgMatches) -> Result<()> {
     let api_ref = Api::current();
     let api = api_ref.authenticated()?;
 
-    let project = matches.get_one::<String>("project").map(|s| s.as_str());
+    let project = config.get_project(matches).ok();
     let app_id = matches.get_one::<String>("app_id");
     let snapshot_id_arg = matches.get_one::<String>("snapshot_id");
     let branch = matches.get_one::<String>("branch").map(|s| s.as_str());
@@ -76,7 +76,7 @@ pub fn execute(matches: &ArgMatches) -> Result<()> {
     let snapshot_id = match (app_id, snapshot_id_arg) {
         (Some(app_id), None) => {
             eprintln!("Resolving latest baseline snapshot for app '{app_id}'...");
-            match api.get_latest_base_snapshot(&org, app_id, branch, project)? {
+            match api.get_latest_base_snapshot(&org, app_id, branch, project.as_deref())? {
                 Some(resp) => {
                     eprintln!(
                         "Found snapshot {} ({} images)",

tests/integration/_cases/snapshots/snapshots-download-help.trycmd

@@ -3,6 +3,9 @@ $ sentry-cli snapshots download --help
 ? success
 Download baseline snapshot images from Sentry's preprod system to a local directory.
 
+Use --snapshot-id to download a specific snapshot, or --app-id to resolve the latest baseline (org
+auth tokens require --project with a numeric project ID for --app-id).
+
 [EXPERIMENTAL] The "snapshots download" command is experimental. The command is subject to breaking
 changes, including removal, in any Sentry CLI release.
 
@@ -12,36 +15,39 @@ Options:
   -o, --org <ORG>
           The organization ID or slug.
 
-      --app-id <APP_ID>
-          App identifier (e.g. sentry-frontend). Mutually exclusive with --snapshot-id.
-
       --header <KEY:VALUE>
           Custom headers that should be attached to all requests
           in key:value format.
 
+  -p, --project <PROJECT>
+          The project ID or slug.
+
+      --app-id <APP_ID>
+          App identifier (e.g. sentry-frontend). Mutually exclusive with --snapshot-id.
+
       --auth-token <AUTH_TOKEN>
           Use the given Sentry auth token.
 
+      --log-level <LOG_LEVEL>
+          Set the log output verbosity. [possible values: trace, debug, info, warn, error]
+
       --snapshot-id <ID>
           Direct snapshot artifact ID. Mutually exclusive with --app-id.
 
       --branch <NAME>
           Git branch filter (only with --app-id).
 
-      --log-level <LOG_LEVEL>
-          Set the log output verbosity. [possible values: trace, debug, info, warn, error]
-
-      --output <DIR>
-          Directory for extracted images.
-          
-          [default: ./snapshots-base/]
-
       --quiet
           Do not print any output while preserving correct exit code. This flag is currently
           implemented only for selected subcommands.
 
           [aliases: --silent]
 
+      --output <DIR>
+          Directory for extracted images.
+          
+          [default: ./snapshots-base/]
+
   -h, --help
           Print help (see a summary with '-h')