refactor(settings): move WorktreeVisibilityDefaults into its own module (#24884)

global-settings-types.ts sits at the 300-line max-lines ceiling; merging main's two new
agent-state-rules settings with experimentalManagedServers put it at 301. The worktree
visibility defaults type moves next to the other visibility types and is re-exported so its
38 importers are unchanged.

Co-authored-by: m4air <m4air@Mac.localdomain>

src/shared/global-settings-types.ts

@@ -37,24 +37,11 @@ import type {
   TaskViewPresetId
 } from './ui-chrome-types'
 import type { SetupScriptLaunchMode } from './worktree/launch-types'
-import type {
-  CustomWorktreeVisibilitySource,
-  ExternalWorktreeVisibility,
-  WorktreeVisibilitySourcePreferences
-} from './repo-types'
+import type { WorktreeVisibilityDefaults } from './worktree/visibility-defaults'
 
 /** MiniMax account region used to select the quota endpoint. */
 export type MiniMaxEndpoint = 'overseas' | 'cn'
 
-export type WorktreeVisibilityDefaults = {
-  /** Default for worktrees outside a recognized source. */
-  external?: ExternalWorktreeVisibility
-  /** Host-owned roots applied to every repository on that host. */
-  customSources?: CustomWorktreeVisibilitySource[]
-  /** Defaults for built-in and host-owned custom sources. */
-  sourcePreferences?: WorktreeVisibilitySourcePreferences
-}
-
 export type GlobalSettings = {
   workspaceDir: string
   /** Host-owned defaults used when a repository has no explicit visibility override. */
@@ -538,6 +525,7 @@ export type OrcaWorkspaceLayout = {
   nestWorkspaces: boolean
 }
 
-// Re-exported so existing importers keep one entry point; the shape lives in its
-// own file because this one is at the max-lines ceiling.
+// Re-exported so existing importers keep one entry point; the shapes live in their
+// own files because this one is at the max-lines ceiling.
 export type { GhosttyImportPreview } from './ghostty-import-preview'
+export type { WorktreeVisibilityDefaults } from './worktree/visibility-defaults'

src/shared/worktree/visibility-defaults.ts

@@ -0,0 +1,15 @@
+import type {
+  CustomWorktreeVisibilitySource,
+  ExternalWorktreeVisibility,
+  WorktreeVisibilitySourcePreferences
+} from '../repo-types'
+
+/** Host-owned worktree visibility defaults, used when a repository has no explicit override. */
+export type WorktreeVisibilityDefaults = {
+  /** Default for worktrees outside a recognized source. */
+  external?: ExternalWorktreeVisibility
+  /** Host-owned roots applied to every repository on that host. */
+  customSources?: CustomWorktreeVisibilitySource[]
+  /** Defaults for built-in and host-owned custom sources. */
+  sourcePreferences?: WorktreeVisibilitySourcePreferences
+}