Convert all INFO logs to DEBUG to reduce CLI noise

Converted ~77 info! macro calls to debug! across the codebase to prevent
log messages from interrupting the CLI experience during normal operation.
Users can still see these logs by setting RUST_LOG=debug if needed.

Affected crates:
- g3-cli
- g3-computer-control
- g3-console
- g3-core
- g3-ensembles
- g3-execution
- g3-providers

crates/g3-providers/src/oauth.rs

@@ -392,7 +392,7 @@ pub async fn get_oauth_token_async(
                             if let Err(e) = token_cache.save_token(&new_token) {
                                 tracing::warn!("Failed to save refreshed token: {}", e);
                             }
-                            tracing::info!("Successfully refreshed token");
+                            tracing::debug!("Successfully refreshed token");
                             return Ok(new_token.access_token);
                         }
                         Err(e) => {