Route new app windows to named workspaces

Give workspaces stable IDs, then place each matching new window on its workspace when it opens. Replace the example app IDs with the values reported by gnoblinctl window list --json.

gnoblin.configure {
    window_management = {
        dynamic_workspaces = false,
        num_workspaces = 3,
        workspace_names = {"Code", "Web", "Chat"},
        workspace_ids = {"code", "web", "chat"},
    },
}

gnoblin.window_rule {
    match = {type = "window", app_id = [[^org.gnome.TextEditor$]]},
    workspace = {id = "code"},
}

gnoblin.window_rule {
    match = {type = "window", app_id = [[^org.mozilla.firefox$]]},
    workspace = {id = "web"},
}

gnoblin.window_rule {
    match = {type = "window", app_id = [[^org.gnome.Fractal$]]},
    workspace = {id = "chat"},
}

Option	Values and default	Effect
dynamic_workspaces	Boolean; default false	Keeps the configured workspace count fixed.
num_workspaces	Integer 1–36; default 4	Sets the number of workspaces.
workspace_names	Up to 36 strings, max 80 chars each; default {}	Labels workspaces by position.
workspace_ids	Up to 36 unique IDs; default {}	Keeps rule targets stable if positions change.
match.app_id	JavaScript regular expression; unset matches any app	Selects windows by application ID.
workspace	Declared {id = "code"} or {number = 1..36}; unset	Places a matching new normal window on that workspace.

Workspace IDs start with a letter or digit. They may also contain ., _ or -. The example declares its three IDs in workspace order; each placement ID must be declared there. Numeric targets are one-based positions.

App ID patterns are case-sensitive JavaScript regular expressions. Use ^ and $ to match the whole ID. Reload the configuration to apply these settings.

Placement happens once; it does not lock a window to its workspace. You can move it afterward, and Gnoblin will leave it there.

• If an app reuses an existing window, Gnoblin does not place it again.
• Dialogs stay with their parent window.
• If the target workspace is unavailable, the new window stays where it opened.

See workspace rules and the window-management reference.