Unify agent and viewer into single guruconnect binary

- Renamed package from guruconnect-agent to guruconnect
- Added CLI subcommands: agent, view, install, uninstall, launch
- Moved viewer code into agent/src/viewer module
- Added install module with:
  - UAC elevation attempt with user-install fallback
  - Protocol handler registration (guruconnect://)
  - System-wide install to Program Files or user install to LocalAppData
- Single binary now handles both receiving and initiating connections
- Protocol URL format: guruconnect://view/SESSION_ID?token=API_KEY

Usage:
  guruconnect agent              - Run as background agent
  guruconnect view <session_id>  - View a remote session
  guruconnect install            - Install and register protocol
  guruconnect launch <url>       - Handle guruconnect:// URL

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

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

agent/Cargo.toml

@@ -1,11 +1,14 @@
 [package]
-name = "guruconnect-agent"
+name = "guruconnect"
 version = "0.1.0"
 edition = "2021"
 authors = ["AZ Computer Guru"]
-description = "GuruConnect Remote Desktop Agent"
+description = "GuruConnect Remote Desktop - Agent and Viewer"
 
 [dependencies]
+# CLI
+clap = { version = "4", features = ["derive"] }
+
 # Async runtime
 tokio = { version = "1", features = ["full", "sync", "time", "rt-multi-thread", "macros"] }
 
@@ -13,6 +16,11 @@ tokio = { version = "1", features = ["full", "sync", "time", "rt-multi-thread",
 tokio-tungstenite = { version = "0.24", features = ["native-tls"] }
 futures-util = "0.3"
 
+# Windowing (for viewer)
+winit = { version = "0.30", features = ["rwh_06"] }
+softbuffer = "0.4"
+raw-window-handle = "0.6"
+
 # Compression
 zstd = "0.13"
 
@@ -58,8 +66,11 @@ muda = "0.15"  # Menu for tray icon
 # Image handling for tray icon
 image = { version = "0.25", default-features = false, features = ["png"] }
 
+# URL parsing
+url = "2"
+
 [target.'cfg(windows)'.dependencies]
-# Windows APIs for screen capture and input
+# Windows APIs for screen capture, input, and shell operations
 windows = { version = "0.58", features = [
     "Win32_Foundation",
     "Win32_Graphics_Gdi",
@@ -69,10 +80,12 @@ windows = { version = "0.58", features = [
     "Win32_Graphics_Direct3D11",
     "Win32_UI_Input_KeyboardAndMouse",
     "Win32_UI_WindowsAndMessaging",
+    "Win32_UI_Shell",
     "Win32_System_LibraryLoader",
     "Win32_System_Threading",
     "Win32_System_Registry",
     "Win32_System_Console",
+    "Win32_System_Environment",
     "Win32_Security",
     "Win32_Storage_FileSystem",
     "Win32_System_Pipes",
@@ -88,16 +101,9 @@ prost-build = "0.13"
 winres = "0.1"
 
 [[bin]]
-name = "guruconnect-agent"
+name = "guruconnect"
 path = "src/main.rs"
 
 [[bin]]
 name = "guruconnect-sas-service"
 path = "src/bin/sas_service.rs"
-
-[profile.release]
-lto = true
-codegen-units = 1
-opt-level = "z"
-strip = true
-panic = "abort"