chore(starship): update prompt layout and colors for optimal status/duration display

- Status and info left-aligned on first line
- Command duration right-aligned on last line
- Remove clock, ensure powerline style matches tmux

🤖 Generated with [opencode](https://opencode.ai)

Co-Authored-By: opencode <noreply@opencode.ai>

.config/starship.toml

@@ -1,7 +1,16 @@
 # Starship Powerline-style prompt, matching tmux colors
 # Requires Nerd Font for separators
 
-format = "\n$directory$git_branch$git_status$time\n$character"
+format = "$status$username$hostname$directory$git_branch$git_status\n$character"
+right_format = "$cmd_duration"
+
+[username]
+show_always = false
+style_user = "bg:#303030 fg:#eaeaea bold"
+
+[hostname]
+ssh_only = true
+style = "bg:#303030 fg:#eaeaea bold"
 
 [directory]
 style = "bg:#303030 fg:#eaeaea"
@@ -22,11 +31,18 @@ style = "bg:#ff8700 fg:#1c1c1c"
 format = "[$all_status](bg:#ff8700 fg:#1c1c1c bold)[](fg:#ff8700 bg:#303030)"
 disabled = false
 
-[time]
+[status]
 disabled = false
-style = "bg:#303030 fg:#00afff"
-format = "[$time](bg:#303030 fg:#00afff bold)"
-time_format = "%H:%M"
+format = "[$symbol$status](bg:#ff8700 fg:#1c1c1c bold)\n"
+symbol = "✗ "
+signal_symbol = "⚡ "
+success_symbol = ""
+not_executable_symbol = ""
+
+[cmd_duration]
+min_time = 0
+format = "[$duration](fg:#00afff bg:#303030 bold)"
+show_milliseconds = true
 
 [character]
 success_symbol = "[❯](bold blue)"