fix(chat): correções de SSE, inicialização e área de clique

- Substituir WebSocket por SSE para real-time (chat.rs)
- Corrigir inicialização do chat runtime em lib.rs
- Iniciar unreadByMachine em 0 ao criar sessão (liveChat.ts)
- Corrigir área de clique do chip minimizado (pointer-events)
- Corrigir roteamento SPA no Tauri (index.html?view=chat)
- Corrigir estado inicial isMinimized como true

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

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

apps/desktop/src-tauri/Cargo.toml

@@ -29,7 +29,7 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 sysinfo = { version = "0.31", default-features = false, features = ["multithread", "network", "system", "disk"] }
 get_if_addrs = "0.5"
-reqwest = { version = "0.12", features = ["json", "rustls-tls", "blocking"], default-features = false }
+reqwest = { version = "0.12", features = ["json", "rustls-tls", "blocking", "stream"], default-features = false }
 futures-util = "0.3"
 tokio = { version = "1", features = ["rt-multi-thread", "macros", "time"] }
 once_cell = "1.19"
@@ -39,8 +39,7 @@ parking_lot = "0.12"
 hostname = "0.4"
 base64 = "0.22"
 sha2 = "0.10"
-tokio-tungstenite = { version = "0.21", features = ["rustls-tls-webpki-roots"] }
-url = "2.5"
+# SSE usa reqwest com stream, nao precisa de websocket
 
 [target.'cfg(windows)'.dependencies]
 winreg = "0.55"