Fix license activation and plugin requests ignoring proxy settings

Make yaak_api_client() read proxy settings from the database and apply
them to the reqwest client. Also replace bare reqwest::Client::new()
calls in license activate/deactivate with yaak_api_client() so they
get proxy support (and consistent UA/headers/timeout).

Fixes https://yaak.app/feedback/posts/cannot-activate-license

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

crates-tauri/yaak-tauri-utils/Cargo.toml

@@ -11,3 +11,5 @@ thiserror = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 regex = "1.11.0"
 yaak-common = { workspace = true }
+yaak-models = { workspace = true }
+log = { workspace = true }

crates-tauri/yaak-tauri-utils/src/api_client.rs

@@ -1,9 +1,12 @@
 use crate::error::Result;
-use reqwest::Client;
+use log::{debug, warn};
+use reqwest::{Client, Proxy};
 use std::time::Duration;
 use tauri::http::{HeaderMap, HeaderValue};
-use tauri::{AppHandle, Runtime};
+use tauri::{AppHandle, Manager, Runtime};
 use yaak_common::platform::{get_ua_arch, get_ua_platform};
+use yaak_models::models::{ProxySetting, ProxySettingAuth};
+use yaak_models::query_manager::QueryManager;
 
 pub fn yaak_api_client<R: Runtime>(app_handle: &AppHandle<R>) -> Result<Client> {
     let platform = get_ua_platform();
@@ -13,12 +16,58 @@ pub fn yaak_api_client<R: Runtime>(app_handle: &AppHandle<R>) -> Result<Client>
     let mut default_headers = HeaderMap::new();
     default_headers.insert("Accept", HeaderValue::from_str("application/json").unwrap());
 
-    let client = reqwest::ClientBuilder::new()
+    let mut builder = reqwest::ClientBuilder::new()
         .timeout(Duration::from_secs(20))
         .default_headers(default_headers)
         .gzip(true)
-        .user_agent(ua)
-        .build()?;
+        .user_agent(ua);
 
+    // Apply proxy settings from global app settings
+    let qm = app_handle.state::<QueryManager>();
+    let db = qm.inner().connect();
+    let proxy = db.get_settings().proxy;
+    match &proxy {
+        None => { /* System default */ }
+        Some(ProxySetting::Disabled) => {
+            builder = builder.no_proxy();
+        }
+        Some(ProxySetting::Enabled { http, https, auth, bypass, disabled }) => {
+            if !disabled {
+                if !http.is_empty() {
+                    match Proxy::http(http) {
+                        Ok(mut p) => {
+                            if let Some(ProxySettingAuth { user, password }) = auth {
+                                debug!("Using http proxy auth");
+                                p = p.basic_auth(user.as_str(), password.as_str());
+                            }
+                            p = p.no_proxy(reqwest::NoProxy::from_string(bypass));
+                            builder = builder.proxy(p);
+                        }
+                        Err(e) => {
+                            warn!("Failed to apply http proxy: {e:?}");
+                        }
+                    }
+                }
+
+                if !https.is_empty() {
+                    match Proxy::https(https) {
+                        Ok(mut p) => {
+                            if let Some(ProxySettingAuth { user, password }) = auth {
+                                debug!("Using https proxy auth");
+                                p = p.basic_auth(user.as_str(), password.as_str());
+                            }
+                            p = p.no_proxy(reqwest::NoProxy::from_string(bypass));
+                            builder = builder.proxy(p);
+                        }
+                        Err(e) => {
+                            warn!("Failed to apply https proxy: {e:?}");
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    let client = builder.build()?;
     Ok(client)
 }