feat(app): implement stacksnipe

crates/app/Cargo.toml

@@ -21,6 +21,7 @@ regex.workspace = true
 thiserror.workspace = true
 tracing.workspace = true
 url.workspace = true
+walkdir.workspace = true
 reqwest.workspace = true
 serde.workspace = true
 serde_json.workspace = true

crates/app/src/lib.rs

@@ -22,6 +22,11 @@ pub mod eth2wrap;
 /// Private key locking service.
 pub mod privkeylock;
 
+/// Validator-stack process sniper: periodically scans a `/proc`-like
+/// filesystem for running Ethereum validator stack processes and reports the
+/// detected component names and CLI parameters through a callback.
+pub mod stacksnipe;
+
 /// Listen for SSE from Beacon Node
 pub mod sse;