gen-cards: regenerate Use-it block

README.md

@@ -40,6 +40,15 @@ iPhone** (Apple's `coreai-pipelined` engine + the zoo's engine patch stack).
 <!-- gen-cards:use-it begin id=gemma-4-e2b (managed by scripts/gen-cards — edit cards.json / QuickStart.swift, not this block) -->
 ## Use it
 
+⚡ **One line** — run the kit's task op on this model
+(`import CoreAIOps`; no session, no model plumbing, downloads on first use):
+
+```swift
+let tldr = try await CoreAI.summarize(text, options: .model("gemma-4-e2b"))
+```
+
+Twenty ops, one shape — [Cookbook](https://github.com/john-rocky/coreai-kit/blob/main/docs/COOKBOOK.md).
+
 ▶️ **Run it (source)** — the [ChatDemo runner](https://github.com/john-rocky/coreai-kit/tree/main/Examples/ChatDemo)
 (GUI + CLI, one app for every chat model in the catalog):
 
@@ -63,6 +72,8 @@ let reply = try await chat.respond(to: prompt)
 // reply: the answer, generated fully on-device
 ```
 
+Also runs behind **Apple's FoundationModels API** — CoreAIKit's [`KitGemmaModel`](https://github.com/john-rocky/coreai-kit#works-with-apples-foundationmodels-api) plugs this bundle into the system `LanguageModelSession`; capabilities (tool calling, guided generation) auto-detect per model.
+
 The take-home is [`Examples/ChatDemo/Sources/QuickStart.swift`](https://github.com/john-rocky/coreai-kit/blob/main/Examples/ChatDemo/Sources/QuickStart.swift)
 — this exact code as one typed function, no UI; the CLI is an argument shell over it, and
 the GUI drives the same `ChatSession` across turns for its transcript.