gen-cards: regenerate Use-it block

README.md

@@ -41,6 +41,8 @@ waveform. Distilled (ARC) for few-step generation, so it's fast.
 
 ## Use it
 
+**New to Core AI? [Start with CoreAIKit 0.7.1](https://github.com/john-rocky/coreai-kit#readme).** Follow its requirements and first-run steps for `qwen3-0.6b`, then open the same release's [ChatDemo](https://github.com/john-rocky/coreai-kit/tree/0.7.1/Examples/ChatDemo). The README records the tested OS/SDK and download size; model and device coverage is stated per example.
+
 ⚡ **One line** — this model is the default behind the kit's task op
 (`import CoreAIOps`; no session, no model plumbing, downloads on first use):
 
@@ -48,21 +50,24 @@ waveform. Distilled (ARC) for few-step generation, so it's fast.
 let audio = try await CoreAI.compose(prompt)
 ```
 
-Every op, one shape — [Cookbook](https://github.com/john-rocky/coreai-kit/blob/main/docs/COOKBOOK.md).
+Every op, one shape — [Cookbook](https://github.com/john-rocky/coreai-kit/blob/0.7.1/docs/COOKBOOK.md).
 
-▶️ **Run it (source)** — the [Music runner](https://github.com/john-rocky/coreai-kit/tree/main/Examples/Music)
+▶️ **Run it (source)** — the [Music runner](https://github.com/john-rocky/coreai-kit/tree/0.7.1/Examples/Music)
 (GUI + CLI, one app for every text-to-music model in the catalog):
 
 ```bash
-git clone https://github.com/john-rocky/coreai-kit
-open coreai-kit/Examples/Music/Music.xcodeproj
+git clone --branch 0.7.1 --depth 1 https://github.com/john-rocky/coreai-kit
+export DEVELOPER_DIR=/Applications/Xcode-27.0.0-RC.app/Contents/Developer
+open -a /Applications/Xcode-27.0.0-RC.app coreai-kit/Examples/Music/Music.xcodeproj
 # → Run, then pick "Stable Audio Open Small" in the model picker
 
 # agents / headless (macOS):
 cd coreai-kit/Examples/Music
-swift run music-cli --model stable-audio-open-small --prompt "128 BPM tech house drum loop" --output loop.wav
+swift run -c release music-cli --model stable-audio-open-small --prompt "128 BPM tech house drum loop" --output loop.wav
 ```
 
+Use Xcode build **27A266a** from the release's `.xcode-pin`; adjust the app path if your installation is named differently.
+
 💻 **Build with it** — complete; the glue is kit API, copy-paste runs:
 
 ```swift
@@ -73,7 +78,7 @@ let audio = try await musician.generate(prompt)
 // audio.samples: 44.1 kHz stereo (planar L/R) — play it or write a WAV
 ```
 
-The take-home is [`Examples/Music/Sources/QuickStart.swift`](https://github.com/john-rocky/coreai-kit/blob/main/Examples/Music/Sources/QuickStart.swift)
+The take-home is [`Examples/Music/Sources/QuickStart.swift`](https://github.com/john-rocky/coreai-kit/blob/0.7.1/Examples/Music/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 `KitMusician(catalog:)` and plays the result.
 Length? `generate(_:seconds:)` up to the model's ~11 s window. The WAV container is your
@@ -81,10 +86,10 @@ app's territory (the runner ships a 30-line writer with planar-stereo support).
 
 **Integration checklist**
 
-- SPM: `https://github.com/john-rocky/coreai-kit` → product **CoreAIKit**
+- SPM: `https://github.com/john-rocky/coreai-kit` (exact **0.7.1**) → product **CoreAIKit**
 - Info.plist: none needed
 - Entitlements: none needed (macOS)
-- First run downloads the model — 1.1 GB (Mac) — then it loads from the
+- First run downloads the model — ~1,060 MB (Mac) — then it loads from the
   local cache (Application Support; progress via the `downloadProgress` callback)
 - Measure in Release — Debug is ~3× slower on per-token host work
 <!-- gen-cards:use-it end -->