feat(telemetry): Implement structured telemetry logging and reporting

Adds comprehensive client-side telemetry capabilities for usage, errors, and performance metrics. This includes integrating OpenTelemetry standards into both the frontend (Svelte) and backend (Tauri/Rust) layers to capture events, spans, and system resource utilization.

The implementation ensures that all collected data is privacy-filtered by design, explicitly excluding sensitive information like repository paths, credentials, source code, or email addresses from being logged.

- Updates README with detailed SigNoz telemetry guide
- Adds process metrics collection (CPU/Memory) in Rust backend
- Exposes `setTelemetryEnabled` state management to the frontend

src-tauri/src/main.rs

@@ -2,6 +2,7 @@
 
 mod badge;
 mod git;
+mod telemetry;
 
 use badge::set_sync_badge;
 use git::{
@@ -24,6 +25,7 @@ use git::{
     unstage_files, update_remote,
 };
 use tauri::Manager;
+use telemetry::{emit_frontend_log, emit_frontend_span, set_telemetry_enabled};
 
 struct ConsoleLogger;
 
@@ -78,6 +80,7 @@ fn close_splashscreen(app: tauri::AppHandle) -> Result<(), String> {
 #[tokio::main]
 async fn main() {
     init_console_logging();
+    telemetry::init();
     if let Some(result) = run_sequence_editor_if_requested() {
         if let Err(error) = result {
             eprintln!("{error}");
@@ -193,7 +196,10 @@ async fn main() {
             cred_save,
             cred_delete,
             set_sync_badge,
-            close_splashscreen
+            close_splashscreen,
+            set_telemetry_enabled,
+            emit_frontend_log,
+            emit_frontend_span
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");