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.toml

@@ -0,0 +1,32 @@
+[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"