fix: set default-run = animus to fix cargo run ambiguity

With two [[bin]] targets (animus + ao), cargo run fails without --bin.
Setting default-run fixes the smoke E2E and general cargo run usage.

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

Author: Shooksie

crates/orchestrator-cli/Cargo.toml

@@ -3,6 +3,7 @@ name = "orchestrator-cli"
 version = "0.3.0"
 edition = "2021"
 license = "Elastic-2.0"
+default-run = "animus"
 
 [[bin]]
 name = "animus"