chore: align iOS 26 capability docs and UI localization

Keep repository messaging consistent with the implemented iOS 26 SpeechAnalyzer path, and remove mixed hardcoded copy by routing remaining UI/error text through localized string keys.

README.md

@@ -1,9 +1,9 @@
 # OSGKeyboard
 
 > Hold a key, speak, release — AI-polished text appears at your cursor in any app.
-> An open-source, custom-keyboard-based voice input tool for iOS 18+, inspired by [Typeless](https://typeless.com) and [OpenLess](https://github.com/Open-Less/openless).
+> An open-source, custom-keyboard-based voice input tool for iOS 26+, inspired by [Typeless](https://typeless.com) and [OpenLess](https://github.com/Open-Less/openless).
 
-![Platform](https://img.shields.io/badge/platform-iOS%2018%2B-0078D4?logo=apple)
+![Platform](https://img.shields.io/badge/platform-iOS%2026%2B-0078D4?logo=apple)
 ![Swift](https://img.shields.io/badge/Swift-6.0-FA7343?logo=swift)
 ![License](https://img.shields.io/badge/license-MIT-green)
 ![CI](https://github.com/hkgood/OSGKeyboard/actions/workflows/ci.yml/badge.svg)
@@ -20,14 +20,14 @@ OSGKeyboard is a free, open alternative to commercial voice-input tools. It runs
 2. Speak naturally
 3. Release — the AI polishes your words into clean text and inserts it at the cursor
 
-The audio stays on-device (transcribed by Apple's on-device `SFSpeechRecognizer` on iOS 18/19; iOS 26+ `SpeechAnalyzer` planned for the next release). Only the **polished transcript** is sent to your chosen cloud LLM. **No audio ever leaves your phone.**
+The audio stays on-device (transcribed by Apple's on-device `SpeechAnalyzer` + `DictationTranscriber` on iOS 26+). Only the **polished transcript** is sent to your chosen cloud LLM. **No audio ever leaves your phone.**
 
 ---
 
 ## Features
 
 - 🎙 **Push-to-talk** with a Typeless-style circular mic button
-- 🧠 **On-device ASR** (iOS 18/19 `SFSpeechRecognizer`; iOS 26+ `SpeechAnalyzer` + `DictationTranscriber` planned)
+- 🧠 **On-device ASR** (`SpeechAnalyzer` + `DictationTranscriber`, iOS 26+)
 - ✍️ **AI polishing** — adds structure, punctuation, fixes grammar, optionally produces lists
 - 🔌 **Bring-your-own API** — works with any OpenAI-compatible endpoint (OpenAI, DeepSeek, Qwen DashScope, your own self-hosted server, …)
 - 🔒 **Privacy first** — audio never leaves your device; transcripts only sent to the LLM you choose
@@ -41,7 +41,7 @@ The audio stays on-device (transcribed by Apple's on-device `SFSpeechRecognizer`
 ### Requirements
 
 - macOS with **Xcode 16+** (Xcode 26 recommended)
-- iPhone running **iOS 18.0+**
+- iPhone running **iOS 26.0+**
 - [XcodeGen](https://github.com/yonaskolb/XcodeGen): `brew install xcodegen`
 - An OpenAI-compatible API key (e.g. from [OpenAI](https://platform.openai.com/api-keys), [DeepSeek](https://platform.deepseek.com/api_keys), or [Qwen DashScope](https://dashscope.console.aliyun.com/apiKey))
 
@@ -80,7 +80,7 @@ OSGKeyboard/
 │   ├── KeyboardViewController.swift   # Principal class
 │   ├── Services/
 │   │   ├── AudioCaptureService.swift  # AVAudioEngine → 16 kHz PCM
-│   │   ├── ASRService.swift           # iOS 26 + iOS 18 ASR
+│   │   ├── ASRService.swift           # iOS 26 SpeechAnalyzer ASR
 │   │   └── PolishingService.swift     # LLM call with timeout
 │   └── Views/                   # RecordButton, Waveform, KeyboardRootView
 ├── OSGKeyboardShared/           # Framework shared by app + extension
@@ -132,8 +132,7 @@ That's it. No other code changes required.
 
 - iOS sandboxes keyboard extensions: ~60 MB memory cap, Full Access required.
 - The keyboard does **not** work in password fields or some `WKWebView` textareas (iOS limitation).
-- iOS 18/19 ships with `SFSpeechRecognizer` for on-device ASR. iOS 26+ `SpeechAnalyzer` is planned for the next release — it is significantly faster and supports more locales.
-- iOS 26+ users in v0.1.1 use the iOS 18 `SFSpeechRecognizer` path; the iOS 26 `SpeechAnalyzer` is planned for 0.2.0.
+- iOS 26+ only. Earlier iOS versions are not supported.
 
 ---