Can you remove lettered workspaces?

[AirMarshal]

# You can use it to add commands that run after login to macOS user session.
# 'start-at-login' needs to be 'true' for 'after-login-command' to work
after-login-command = [
  'exec-and-forget sketchybar --reload',
]

# TODO: Customize these commands to launch your own status bar or other startup applications.
# NOTE: 'exec-and-forget' runs a command in the background without waiting for it to finish.
after-startup-command = [
  'exec-and-forget sketchybar --reload',
  'exec-and-forget sketchybar --bar topmost=on',
  'exec-and-forget borders active_color=0xffe1e3e4 inactive_color=0xff494d64 width=5.0',
]
on-focus-changed = [
  "move-mouse window-lazy-center",
  "exec-and-forget sketchybar --trigger aerospace_workspace_change"
]

# 'after-startup-command' is run after 'after-login-command'
exec-on-workspace-change = [
  "/bin/bash",
  "-c",
  "sketchybar --trigger aerospace_workspace_change FOCUSED_WORKSPACE=$AEROSPACE_FOCUSED_WORKSPACE",
]

# Start AeroSpace at login
start-at-login = true

# Normalizations. See: https://nikitabobko.github.io/AeroSpace/guide#normalization
enable-normalization-flatten-containers = false
enable-normalization-opposite-orientation-for-nested-containers = true

# The 'accordion-padding' specifies the size of accordion padding
# You can set 0 to disable the padding feature
accordion-padding = 30

# Possible values: tiles|accordion
default-root-container-layout = 'tiles'

# Possible values: horizontal|vertical|auto
# 'auto' means: wide monitor (anything wider than high) gets horizontal orientation,
#               tall monitor (anything higher than wide) gets vertical orientation
default-root-container-orientation = 'auto'

# NOTE: These settings automatically center the mouse cursor on the focused window or monitor.
# This is a personal preference. Comment out or remove these lines if you don't like this behavior.

# Fallback value (if you omit the key): on-focused-monitor-changed = []
on-focused-monitor-changed = ['move-mouse monitor-lazy-center']
on-focus-changed = "move-mouse window-lazy-center"

# You can effectively turn off macOS "Hide application" (cmd-h) feature by toggling this flag
# Useful if you don't use this macOS feature, but accidentally hit cmd-h or cmd-alt-h key
automatically-unhide-macos-hidden-apps = false

# Possible values: (qwerty|dvorak)
# [key-mapping]
# preset = 'qwerty'

# TODO: Customize your gaps and monitor names here.
# To find your monitor names, run the command: aerospace list-monitors
# NOTE: The last value in each list (e.g., '5') is the fallback for any monitor not explicitly named.

[gaps]
inner.horizontal = 10
inner.vertical = 10
outer.left = 10
outer.bottom = 10
outer.top = 10
outer.right = 10

# 'main' binding mode declaration
# 'main' binding mode must be always presented
# Fallback value (if you omit the key): mode.main.binding = {}
# NOTE: This config uses 'alt' as the main modifier key (Mod Key).

[mode.main.binding]
# See: https://nikitabobko.github.io/AeroSpace/commands#layout
alt-slash = 'layout tiles horizontal vertical'
alt-comma = 'layout accordion horizontal vertical'

# See: https://nikitabobko.github.io/AeroSpace/commands#focus
alt-h = 'focus left'
alt-j = 'focus down'
alt-k = 'focus up'
alt-l = 'focus right'

# See: https://nikitabobko.github.io/AeroSpace/commands#move
alt-shift-h = 'move left'
alt-shift-j = 'move down'
alt-shift-k = 'move up'
alt-shift-l = 'move right'

# Normalizations
alt-ctrl-h = 'split horizontal'
alt-ctrl-v = 'split vertical'
alt-f = 'macos-native-fullscreen'
alt-s = 'layout v_accordion'
alt-w = 'layout h_accordion'
alt-e = 'layout tiles horizontal vertical'
alt-shift-space = 'layout floating tiling'

# See: https://nikitabobko.github.io/AeroSpace/commands#resize
alt-shift-minus = 'resize smart -50'
alt-shift-equal = 'resize smart +50'

# See: https://nikitabobko.github.io/AeroSpace/commands#workspace
alt-1 = 'workspace 1'
alt-2 = 'workspace 2'
alt-3 = 'workspace 3'
alt-4 = 'workspace 4'
alt-5 = 'workspace 5'
alt-6 = 'workspace 6'
alt-7 = 'workspace 7'
alt-8 = 'workspace 8'
alt-9 = 'workspace 9'

# See: https://nikitabobko.github.io/AeroSpace/commands#move-node-to-workspace
alt-shift-1 = ['move-node-to-workspace 1', 'workspace 1', 'exec-and-forget sketchybar --trigger aerospace_workspace_change']
alt-shift-2 = ['move-node-to-workspace 2', 'workspace 2', 'exec-and-forget sketchybar --trigger aerospace_workspace_change']
alt-shift-3 = ['move-node-to-workspace 3', 'workspace 3', 'exec-and-forget sketchybar --trigger aerospace_workspace_change']
alt-shift-4 = ['move-node-to-workspace 4', 'workspace 4', 'exec-and-forget sketchybar --trigger aerospace_workspace_change']
alt-shift-5 = ['move-node-to-workspace 5', 'workspace 5', 'exec-and-forget sketchybar --trigger aerospace_workspace_change']
alt-shift-6 = ['move-node-to-workspace 6', 'workspace 6', 'exec-and-forget sketchybar --trigger aerospace_workspace_change']
alt-shift-7 = ['move-node-to-workspace 7', 'workspace 7', 'exec-and-forget sketchybar --trigger aerospace_workspace_change']
alt-shift-8 = ['move-node-to-workspace 8', 'workspace 8', 'exec-and-forget sketchybar --trigger aerospace_workspace_change']
alt-shift-9 = ['move-node-to-workspace 9', 'workspace 9', 'exec-and-forget sketchybar --trigger aerospace_workspace_change']

# See: https://nikitabobko.github.io/AeroSpace/commands#workspace-back-and-forth
alt-tab = 'workspace-back-and-forth'
# See: https://nikitabobko.github.io/AeroSpace/commands#move-workspace-to-monitor
alt-shift-tab = 'move-workspace-to-monitor --wrap-around next'

# See: https://nikitabobko.github.io/AeroSpace/commands#mode
alt-shift-semicolon = 'mode service'

# TODO: Change or Delete 'LEN T2424zA' to your primary or secondary monitor name if you want to pin workspaces.
# Run 'aerospace list-monitors' to find the name.
# NOTE: This forces workspaces A, B, C, and D to always appear on a specific monitor.

# See: https://nikitabobko.github.io/AeroSpace/guide#assign-to-workspaces-to-monitors
# [workspace-to-monitor-force-assignment]
# A = 'LEN T2424zA'
# B = 'LEN T2424zA'
# C = 'LEN T2424zA'
# D = 'LEN T2424zA'

# 'service' binding mode declaration.
# NOTE: This mode is activated by pressing 'alt-shift-semicolon'. It contains less common commands.
# Press 'esc' to return to 'main' mode.

# See: https://nikitabobko.github.io/AeroSpace/guide#binding-modes
[mode.service.binding]
# esc = ['reload-config', 'mode main']
# r = ['flatten-workspace-tree', 'mode main'] # reset layout
# f = [
#   'layout floating tiling',
#   'mode main',
# ] # Toggle between floating and tiling layout
alt-b = ['exec-and-forget sketchybar --reload', 'mode main']
# backspace = ['close-all-windows-but-current', 'mode main']

# sticky is not yet supported https://github.com/nikitabobko/AeroSpace/issues/2
#s = ['layout sticky tiling', 'mode main']

alt-shift-h = ['join-with left', 'mode main']
alt-shift-j = ['join-with down', 'mode main']
alt-shift-k = ['join-with up', 'mode main']
alt-shift-l = ['join-with right', 'mode main']

down = 'volume down'
up = 'volume up'
shift-down = ['volume set 0', 'mode main']

# Move applications to specific workspace
# NOTE: The following rules automatically move apps to workspaces or make them float when they open.
# Use 'aerospace list-apps' to find the 'app-id' and 'app-name' for your own applications.
# Format of 'aerospace list-apps': Process ID | App ID | App Name

# TODO: Add your own utility apps here that you always want to float.
[[on-window-detected]]
if.app-name-regex-substring = 'SFSymbols|Finder|Microsoft AutoUpdate|Activity Monitor|ImageOptim|AppCleaner|parentapp'
run = ['layout floating']

[[on-window-detected]]
if.app-id = "com.mitchellh.ghostty"
run = ["layout tiling"]

# TODO: Customize or delete the following app-to-workspaces rules to match your workflow.

# Move to Workspace 4 - Editing

[[on-window-detected]]
if.app-name-regex-substring = 'Final Cut Pro|OBS Studio|Motion|Compressor'
run = ['move-node-to-workspace 4']

# Move to Workspace 5 - Gaming

[[on-window-detected]]
if.app-name-regex-substring = 'NVIDIA|Boosteroid'
run = ['move-node-to-workspace 5']

# Move to Workspace 6 - Work/Office Apps

[[on-window-detected]]
if.app-name-regex-substring = 'Microsoft Edge|Microsoft Teams|Microsoft Outlook'
run = ['move-node-to-workspace 6']

[[on-window-detected]]
run = "exec-and-forget sketchybar --trigger aerospace_workspace_change"

I only want there to be active workspaces from 1-9 but all a-z are active. Also when I switch an app from an empty workspace to a full workspace, it doesnt update sketchybar and remove the workspace

[npv12]

You can set this in your config

persistent-workspaces = [
  "1",
  "2",
  "3",
  "4",
  "5",
  "6",
  "7",
  "8",
  "9"
]

This removes letters from persistent workspaces