Add native viewer with low-level keyboard hooks

- New viewer crate for Windows native remote desktop viewing
- Implements WH_KEYBOARD_LL hook for Win key, Alt+Tab capture
- WebSocket client for server communication
- softbuffer rendering for frame display
- Zstd decompression for compressed frames
- Mouse and keyboard input forwarding

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

viewer/Cargo.toml

@@ -0,0 +1,66 @@
+[package]
+name = "guruconnect-viewer"
+version = "0.1.0"
+edition = "2021"
+authors = ["AZ Computer Guru"]
+description = "GuruConnect Native Remote Desktop Viewer"
+
+[dependencies]
+# Async runtime
+tokio = { version = "1", features = ["full", "sync", "time", "rt-multi-thread", "macros"] }
+
+# WebSocket
+tokio-tungstenite = { version = "0.24", features = ["native-tls"] }
+futures-util = "0.3"
+url = "2"
+
+# Windowing
+winit = { version = "0.30", features = ["rwh_06"] }
+softbuffer = "0.4"
+raw-window-handle = "0.6"
+
+# Compression
+zstd = "0.13"
+
+# Protocol (protobuf)
+prost = "0.13"
+prost-types = "0.13"
+bytes = "1"
+
+# Serialization
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+
+# Logging
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+
+# Error handling
+anyhow = "1"
+thiserror = "1"
+
+# UUID
+uuid = { version = "1", features = ["v4", "serde"] }
+
+# CLI args
+clap = { version = "4", features = ["derive"] }
+
+[target.'cfg(windows)'.dependencies]
+# Windows APIs for low-level keyboard hooks
+windows = { version = "0.58", features = [
+    "Win32_Foundation",
+    "Win32_UI_WindowsAndMessaging",
+    "Win32_UI_Input_KeyboardAndMouse",
+    "Win32_System_LibraryLoader",
+    "Win32_System_Threading",
+]}
+
+[build-dependencies]
+prost-build = "0.13"
+
+[profile.release]
+lto = true
+codegen-units = 1
+opt-level = "z"
+strip = true
+panic = "abort"