refactor(settings): remove wrapper layers, dead props and unused dictionary keys

- components/model-selector.tsx uses Dialog, Command and Tooltip
  directly; delete components/ai-elements/model-selector.tsx and
  components/button-with-tooltip.tsx; one renderGroups for both lists;
  no "Server · " prefix round trip
- components/ui: drop CommandDialog, CommandShortcut and six unused
  shadcn exports
- model-config-dialog: no type-to-confirm on provider delete;
  provider-credentials-fields: drop footer and bedrockApiKey
- hooks/use-model-config.ts and lib/types/model-config.ts: remove the
  2025-12 single-provider migration, resetConfig, selectedModel and
  fields nothing reads
- components/chat/TemplateFormDialog.tsx replaces the create and edit
  dialogs; TemplatePanel drops the setInput fallback, the
  templatesChanged listener, dictionary fallbacks and formatLastUsed;
  lib/template-storage.ts drops getTemplate, clickCount and indexes
- reasoning.tsx becomes one component; shimmer uses a CSS keyframe
  (motion and @radix-ui/react-use-controllable-state removed)
- error-toast.tsx deleted in favour of toast.error; ValidationCard
  drops the idle status; dev-xml-simulator uses English literals
- admin: no enum setting type, shared types from lib/admin
  (AdminProviderInput stays exported for that), ENABLE_HISTORY_XML_REPLACE
  entry removed
- app/globals.css: drop check-pop, --ease-spring, --duration-normal
  and the shadow aliases
- dictionaries: 81 unused keys removed from all four languages

tests/unit/template-storage.test.ts

@@ -37,7 +37,6 @@ describe("sortTemplates", () => {
         prompt: "test prompt",
         createdAt: 1000,
         updatedAt: 1000,
-        clickCount: 0,
         runCount: 0,
         lastUsedAt: 0,
         pinned: false,
@@ -115,7 +114,6 @@ describe("searchTemplates", () => {
             description: "Basic flowchart template",
             createdAt: 1000,
             updatedAt: 1000,
-            clickCount: 0,
             runCount: 0,
             lastUsedAt: 0,
             pinned: false,
@@ -127,7 +125,6 @@ describe("searchTemplates", () => {
             description: "Entity relationship diagram",
             createdAt: 1000,
             updatedAt: 1000,
-            clickCount: 0,
             runCount: 0,
             lastUsedAt: 0,
             pinned: false,
@@ -138,7 +135,6 @@ describe("searchTemplates", () => {
             prompt: "Draw network topology",
             createdAt: 1000,
             updatedAt: 1000,
-            clickCount: 0,
             runCount: 0,
             lastUsedAt: 0,
             pinned: false,
@@ -236,7 +232,6 @@ describe("validateImportData", () => {
                     prompt: "test prompt",
                     createdAt: Date.now(),
                     updatedAt: Date.now(),
-                    clickCount: 0,
                     runCount: 0,
                     lastUsedAt: 0,
                     pinned: false,

tests/unit/use-model-config.test.tsx

@@ -260,45 +260,3 @@ describe("useModelConfig across tabs", () => {
         expect(result.current.config.providers).toHaveLength(2)
     })
 })
-
-describe("useModelConfig migration", () => {
-    const OLD = {
-        provider: "next-ai-draw-io-ai-provider",
-        baseUrl: "next-ai-draw-io-ai-base-url",
-        apiKey: "next-ai-draw-io-ai-api-key",
-        model: "next-ai-draw-io-ai-model",
-    }
-
-    it("moves an old keyless Ollama setup into the new format", async () => {
-        localStorage.setItem(OLD.provider, "ollama")
-        localStorage.setItem(OLD.baseUrl, "http://localhost:11434/api")
-        localStorage.setItem(OLD.apiKey, "")
-        localStorage.setItem(OLD.model, "llama3.2")
-        const { result } = await renderLoaded()
-        const [provider] = result.current.config.providers
-        expect(provider).toMatchObject({
-            provider: "ollama",
-            apiKey: "",
-            baseUrl: "http://localhost:11434/api",
-            models: [{ modelId: "llama3.2" }],
-        })
-        expect(result.current.selectedModelId).toBe(provider.models[0].id)
-        expect(localStorage.getItem(OLD.model)).toBeNull()
-    })
-
-    it("keeps an old Ollama without a URL on the server's Ollama", async () => {
-        localStorage.setItem(OLD.provider, "ollama")
-        localStorage.setItem(OLD.apiKey, "")
-        localStorage.setItem(OLD.model, "llama3.2")
-        const { result } = await renderLoaded()
-        // No cloud address: the request takes OLLAMA_BASE_URL or this machine
-        expect(result.current.config.providers[0].baseUrl).toBe("")
-    })
-
-    it("still needs a key for other providers", async () => {
-        localStorage.setItem(OLD.provider, "openai")
-        localStorage.setItem(OLD.model, "gpt-4o")
-        const { result } = await renderLoaded()
-        expect(result.current.config.providers).toEqual([])
-    })
-})