feat(kon): scaffold hybrid modular workspace

- Cargo workspace with 6 domain crates: core, audio, transcription, ai-formatting, storage, cloud-providers
- Minimal Tauri shell (lib.rs + main.rs) with plugin registration
- Svelte 5 frontend copied from Ramble v0.2
- All crates compile as empty stubs
- App identifier: uk.co.corbel.kon

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src-tauri/.cargo/config.toml

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+[env]
+LIBCLANG_PATH = "C:\\Program Files\\LLVM\\bin"

src-tauri/Cargo.toml

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+[package]
+name = "kon"
+version = "0.1.0"
+description = "Kon — Think out loud"
+authors = ["CORBEL Ltd"]
+edition = "2021"
+
+[lib]
+name = "kon_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2", features = [] }
+
+[dependencies]
+# Workspace crates
+kon-core = { path = "../crates/core" }
+kon-audio = { path = "../crates/audio" }
+kon-transcription = { path = "../crates/transcription" }
+kon-ai-formatting = { path = "../crates/ai-formatting" }
+kon-storage = { path = "../crates/storage" }
+kon-cloud-providers = { path = "../crates/cloud-providers" }
+
+# Tauri
+tauri = { version = "2", features = ["tray-icon"] }
+tauri-plugin-opener = "2"
+tauri-plugin-dialog = "2"
+tauri-plugin-global-shortcut = "2"
+
+# Serialisation
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"

src-tauri/build.rs

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+fn main() {
+    tauri_build::build()
+}

src-tauri/capabilities/default.json

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+{
+  "$schema": "../gen/schemas/desktop-schema.json",
+  "identifier": "default",
+  "description": "Capability for the main window",
+  "windows": ["main", "tasks-float"],
+  "permissions": [
+    "core:default",
+    "core:window:allow-start-dragging",
+    "core:window:allow-set-always-on-top",
+    "core:window:allow-minimize",
+    "core:window:allow-toggle-maximize",
+    "core:window:allow-is-maximized",
+    "core:window:allow-close",
+    "core:window:allow-hide",
+    "core:window:allow-show",
+    "core:window:allow-set-focus",
+    "opener:default",
+    "dialog:default",
+    "global-shortcut:allow-register",
+    "global-shortcut:allow-unregister"
+  ]
+}

src-tauri/gen/schemas/capabilities.json

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+{"default":{"identifier":"default","description":"Capability for the main window","local":true,"windows":["main","tasks-float"],"permissions":["core:default","core:window:allow-start-dragging","core:window:allow-set-always-on-top","core:window:allow-minimize","core:window:allow-toggle-maximize","core:window:allow-is-maximized","core:window:allow-close","core:window:allow-hide","core:window:allow-show","core:window:allow-set-focus","opener:default","dialog:default","global-shortcut:allow-register","global-shortcut:allow-unregister"]}}

src-tauri/src/lib.rs

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+#[cfg_attr(mobile, tauri::mobile_entry_point)]
+pub fn run() {
+    tauri::Builder::default()
+        .plugin(tauri_plugin_opener::init())
+        .plugin(tauri_plugin_dialog::init())
+        .plugin(tauri_plugin_global_shortcut::Builder::new().build())
+        .run(tauri::generate_context!())
+        .expect("error while running Kon");
+}

src-tauri/src/main.rs

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+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
+
+fn main() {
+    kon_lib::run()
+}

src-tauri/tauri.conf.json

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+{
+  "$schema": "https://schema.tauri.app/config/2",
+  "productName": "Kon",
+  "version": "0.1.0",
+  "identifier": "uk.co.corbel.kon",
+  "build": {
+    "beforeDevCommand": "npm run dev",
+    "devUrl": "http://localhost:1420",
+    "beforeBuildCommand": "npm run build",
+    "frontendDist": "../build"
+  },
+  "app": {
+    "windows": [
+      {
+        "title": "Kon",
+        "width": 1020,
+        "height": 720,
+        "minWidth": 1020,
+        "minHeight": 540,
+        "decorations": false,
+        "resizable": true,
+        "center": true
+      }
+    ],
+    "security": {
+      "csp": null
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": "all",
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/128x128@2x.png",
+      "icons/icon.icns",
+      "icons/icon.ico"
+    ]
+  }
+}