fix: preserve tab ownership filter across category and search changes in script library

setCategory and setSearch called loadTemplates() with no arguments, dropping
the mine/shared filter set by the active tab — causing the list to show all
templates instead of the current user's scripts after any filter interaction.

Store now persists tabFilters whenever loadTemplates is called with explicit
filters, and reuses them for subsequent no-arg calls from setCategory/setSearch.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/store/scriptGeneratorStore.ts

@@ -14,6 +14,7 @@ interface ScriptGeneratorState {
   selectedTemplate: ScriptTemplateDetail | null
   searchQuery: string
   activeCategoryId: string | null  // null = "All"
+  tabFilters: { mine?: boolean; shared?: boolean }  // current tab's ownership filter
   isLoadingTemplates: boolean      // drives skeleton in ScriptTemplateList
   isLoadingDetail: boolean         // drives spinner in ScriptConfigurePane
 
@@ -48,6 +49,7 @@ export const useScriptGeneratorStore = create<ScriptGeneratorState>()((set, get)
   selectedTemplate: null,
   searchQuery: '',
   activeCategoryId: null,
+  tabFilters: {},
   isLoadingTemplates: false,
   isLoadingDetail: false,
   paramValues: {},
@@ -68,6 +70,10 @@ export const useScriptGeneratorStore = create<ScriptGeneratorState>()((set, get)
   },
 
   loadTemplates: async (filters) => {
+    // When filters are provided (e.g. tab change), persist them so that
+    // subsequent setCategory/setSearch calls reuse the same ownership filter.
+    const resolvedFilters = filters !== undefined ? filters : get().tabFilters
+    if (filters !== undefined) set({ tabFilters: filters })
     set({ isLoadingTemplates: true })
     try {
       const { activeCategoryId, categories, searchQuery } = get()
@@ -75,8 +81,8 @@ export const useScriptGeneratorStore = create<ScriptGeneratorState>()((set, get)
       const params: { category_slug?: string; search?: string; mine?: boolean; shared?: boolean } = {}
       if (category) params.category_slug = category.slug
       if (searchQuery) params.search = searchQuery
-      if (filters?.mine) params.mine = true
-      if (filters?.shared) params.shared = true
+      if (resolvedFilters.mine) params.mine = true
+      if (resolvedFilters.shared) params.shared = true
       const templates = await scriptsApi.getTemplates(params)
       set({ templates, isLoadingTemplates: false })
     } catch {