Fix Tab key responsiveness with immediate UI refresh

- Add immediate terminal.draw() call after input handling in main loop
- Eliminate delay between Tab key press and visual host switching
- Provide instant visual feedback for all navigation inputs
- Maintain existing metric update render cycle without duplication
- Fix UI update timing issue where changes only appeared on metric intervals
- Bump version to 0.1.59

Cargo.lock

@@ -270,7 +270,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.57"
+version = "0.1.58"
 dependencies = [
  "anyhow",
  "chrono",
@@ -292,7 +292,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.57"
+version = "0.1.58"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -315,7 +315,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.57"
+version = "0.1.58"
 dependencies = [
  "chrono",
  "serde",