chore: lock the plugin boundary and remove 2.9.0 leftovers

src/ui/shell/CommandPalette.tsx

@@ -26,11 +26,8 @@ import {
   Play,
   Clipboard,
 } from "lucide-react";
-import {
-  getRecentActivity,
-  getSnippets,
-  type RecentActivityItem,
-} from "@/main-axios";
+import { getRecentActivity, type RecentActivityItem } from "@/main-axios";
+import { listSnippets } from "@/lib/snippet-provider";
 import type { Host, TabType, Tab, Snippet } from "@/types/ui-types";
 import { canEditHost } from "@/sidebar/host-permissions";
 import { RAIL_UTILITY_ITEMS, useRailItems } from "@/sidebar/rail-items";
@@ -85,8 +82,8 @@ export function CommandPalette({
       getRecentActivity(5)
         .then(setRecentActivity)
         .catch(() => {});
-      getSnippets()
-        .then((data) => setSnippets((data ?? []) as unknown as Snippet[]))
+      listSnippets()
+        .then((data) => setSnippets(data as unknown as Snippet[]))
         .catch(() => {});
     }
   }, [isOpen]);

src/ui/shell/action-registry.ts

@@ -104,10 +104,6 @@ export function registerAction(
   };
 }
 
-export function unregisterAction(id: string): void {
-  if (actions.delete(id)) emit();
-}
-
 /** Every registered action. */
 export function listActions(): RegisteredAction[] {
   return [...actions.values()];
@@ -151,15 +147,6 @@ export function declareActionSlot(slot: ActionSlotDefinition): () => void {
   };
 }
 
-/** Whether a slot is declared, i.e. its owner is running. */
-export function isActionSlotDeclared(slotId: string): boolean {
-  return slots.has(slotId);
-}
-
-export function undeclareActionSlot(slotId: string): void {
-  if (slots.delete(slotId)) emit();
-}
-
 /**
  * Adds a contribution to a slot.
  *

src/ui/shell/panel-registry.ts

@@ -24,7 +24,6 @@ export interface PanelDef {
 const registry = createRegistry<PanelDef>();
 
 export const registerPanel = registry.register;
-export const unregisterPanel = registry.unregister;
 export const getPanel = registry.get;
 export const listPanels = registry.list;
 export const usePanels = registry.useList;

src/ui/shell/shell-layout.ts

@@ -37,7 +37,7 @@ const CORE_UNSAVED = new Set([
  * failed, still loading or not installed. The shell shows a placeholder for
  * it, and a layout keeps it so nothing is lost when the plugin comes back.
  */
-export function isUnregisteredPluginTabType(type: string): boolean {
+function isUnregisteredPluginTabType(type: string): boolean {
   return (
     !CORE_UNSAVED.has(type) && !CORE_CAPTURABLE.has(type) && !getTabType(type)
   );

src/ui/shell/tab-registry.ts

@@ -81,10 +81,8 @@ export interface TabTypeDef {
 const registry = createRegistry<TabTypeDef>();
 
 export const registerTabType = registry.register;
-export const unregisterTabType = registry.unregister;
 export const getTabType = registry.get;
 export const listTabTypes = registry.list;
-export const subscribeToTabTypes = registry.subscribe;
 export const useTabTypes = registry.useList;
 export const resetTabTypes = registry.reset;
 
@@ -115,7 +113,7 @@ export function isSessionTabType(type: string): boolean {
   return CORE_SESSION.has(type) || !!registry.get(type)?.session;
 }
 
-export function isHostlessTabType(type: string): boolean {
+function isHostlessTabType(type: string): boolean {
   return CORE_HOSTLESS.has(type) || !!registry.get(type)?.hostless;
 }