refactor(rpc): rename rpc-manager command to rpc for brevity

Simplify command name from 'osvm rpc-manager' to 'osvm rpc' for
better user experience and consistency with other CLI tools.

Changes:
- Rename Command::new("rpc-manager") to Command::new("rpc") in clparse.rs
- Update command check in main.rs from "rpc-manager" to "rpc"
- Update module documentation in rpc_manager.rs

Usage:
- Old: osvm rpc-manager devnet --background
- New: osvm rpc devnet --background

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: 0xrinegade

src/clparse.rs

@@ -221,7 +221,7 @@ Issues & feedback: https://github.com/opensvm/osvm-cli/issues")
         )
         // RPC management commands
         .subcommand(
-            Command::new("rpc-manager") // Renamed from "rpc" to "rpc-manager"
+            Command::new("rpc")
                 .about("Manage RPC nodes (local/remote)")
                 .arg_required_else_help(true)
                 .subcommand( // Moved sonic to be first

src/commands/rpc_manager.rs

@@ -1,6 +1,6 @@
-//! RPC Manager command handlers
+//! RPC command handlers
 //!
-//! This module handles all rpc-manager subcommands including:
+//! This module handles all rpc subcommands including:
 //! - sonic: Deploy Sonic RPC via SSH
 //! - query-solana: Query Solana network
 //! - local: Start local RPC

src/main.rs

@@ -1271,8 +1271,8 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         return handle_ovsm_command(sub_matches).await;
     }
 
-    // Handle RPC manager early - it generates its own keypairs and doesn't need default config
-    if sub_command == "rpc-manager" {
+    // Handle RPC early - it generates its own keypairs and doesn't need default config
+    if sub_command == "rpc" {
         return commands::rpc_manager::handle_rpc_manager(sub_matches).await.map_err(|e| e.into());
     }