Feat/provider individual config (#663)

* refactor(ui): simplify UpdateBadge to minimal dot indicator

* feat(provider): add individual test and proxy config for providers

Add support for provider-specific model test and proxy configurations:

- Add ProviderTestConfig and ProviderProxyConfig types in Rust and TypeScript
- Create ProviderAdvancedConfig component with collapsible panels
- Update stream_check service to merge provider config with global config
- Proxy config UI follows global proxy style (single URL input)

Provider-level configs stored in meta field, no database schema changes needed.

* feat(ui): add failover toggle and improve proxy controls

- Add FailoverToggle component with slide animation
- Simplify ProxyToggle style to match FailoverToggle
- Add usage statistics button when proxy is active
- Fix i18n parameter passing for failover messages
- Add missing failover translation keys (inQueue, addQueue, priority)
- Replace AboutSection icon with app logo

* fix(proxy): support system proxy fallback and provider-level proxy config

- Remove no_proxy() calls in http_client.rs to allow system proxy fallback
- Add get_for_provider() to build HTTP client with provider-specific proxy
- Update forwarder.rs and stream_check.rs to use provider proxy config
- Fix EditProviderDialog.tsx to include provider.meta in useMemo deps
- Add useEffect in ProviderAdvancedConfig.tsx to sync expand state

Fixes #636
Fixes #583

* fix(ui): sync toast theme with app setting

* feat(settings): add log config management

Fixes #612
Fixes #514

* fix(proxy): increase request body size limit to 200MB

Fixes #666

* docs(proxy): update timeout config descriptions and defaults

Fixes #612

* fix(proxy): filter x-goog-api-key header to prevent duplication

* fix(proxy): prevent proxy recursion when system proxy points to localhost

Detect if HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment variables
point to loopback addresses (localhost, 127.0.0.1), and bypass system
proxy in such cases to avoid infinite request loops.

* fix(i18n): add providerAdvanced i18n keys and fix failover toast parameter

- Add providerAdvanced.* i18n keys to en.json, zh.json, and ja.json
- Fix failover toggleFailed toast to pass detail parameter
- Remove Chinese fallback text from UI for English/Japanese users

* fix(tray): restore tray-provider events and enable Auto failover properly

- Emit provider-switched event on tray provider click (backward compatibility)
- Auto button now: starts proxy, takes over live config, enables failover

* fix(log): enable dynamic log level and single file mode

- Initialize log at Trace level for dynamic adjustment
- Change rotation strategy to KeepSome(1) for single file
- Set max file size to 1GB
- Delete old log file on startup for clean start

* fix(tray): fix clippy uninlined format args warning

Use inline format arguments: {app_type_str} instead of {}

* fix(provider): allow typing :// in endpoint URL inputs

Change input type from "url" to "text" to prevent browser
URL validation from blocking :// input.

Closes #681

* fix(stream-check): use Gemini native streaming API format

- Change endpoint from OpenAI-compatible to native streamGenerateContent
- Add alt=sse parameter for SSE format response
- Use x-goog-api-key header instead of Bearer token
- Convert request body to Gemini contents/parts format

* feat(proxy): add request logging for debugging

Add debug logs for outgoing requests including URL and body content
with byte size, matching the existing response logging format.

* fix(log): prevent usize underflow in KeepSome rotation strategy

KeepSome(n) internally computes n-2, so n=1 causes underflow.
Use KeepSome(2) as the minimum safe value.

src-tauri/src/proxy/response_processor.rs

@@ -12,6 +12,7 @@ use super::{
 use axum::response::{IntoResponse, Response};
 use bytes::Bytes;
 use futures::stream::{Stream, StreamExt};
+use reqwest::header::HeaderMap;
 use rust_decimal::Decimal;
 use serde_json::Value;
 use std::{
@@ -47,6 +48,12 @@ pub async fn handle_streaming(
     parser_config: &UsageParserConfig,
 ) -> Response {
     let status = response.status();
+    log::debug!(
+        "[{}] 已接收上游流式响应: status={}, headers={}",
+        ctx.tag,
+        status.as_u16(),
+        format_headers(response.headers())
+    );
     let mut builder = axum::response::Response::builder().status(status);
 
     // 复制响应头
@@ -94,6 +101,19 @@ pub async fn handle_non_streaming(
         log::error!("[{}] 读取响应失败: {e}", ctx.tag);
         ProxyError::ForwardFailed(format!("Failed to read response body: {e}"))
     })?;
+    log::debug!(
+        "[{}] 已接收上游响应体: status={}, bytes={}, headers={}",
+        ctx.tag,
+        status.as_u16(),
+        body_bytes.len(),
+        format_headers(&response_headers)
+    );
+
+    log::debug!(
+        "[{}] 上游响应体内容: {}",
+        ctx.tag,
+        String::from_utf8_lossy(&body_bytes)
+    );
 
     // 解析并记录使用量
     if let Ok(json_value) = serde_json::from_slice::<Value>(&body_bytes) {
@@ -470,6 +490,12 @@ pub fn create_logged_passthrough_stream(
 
             match chunk_result {
                 Some(Ok(bytes)) => {
+                    if is_first_chunk {
+                        log::debug!(
+                            "[{tag}] 已接收上游流式首包: bytes={}",
+                            bytes.len()
+                        );
+                    }
                     is_first_chunk = false;
                     let text = String::from_utf8_lossy(&bytes);
                     buffer.push_str(&text);
@@ -488,13 +514,9 @@ pub fn create_logged_passthrough_stream(
                                             if let Some(c) = &collector {
                                                 c.push(json_value.clone()).await;
                                             }
-                                            log::debug!(
-                                                "[{}] <<< SSE 事件: {}",
-                                                tag,
-                                                data.chars().take(100).collect::<String>()
-                                            );
+                                            log::debug!("[{tag}] <<< SSE 事件: {data}");
                                         } else {
-                                            log::debug!("[{tag}] <<< SSE 数据: {}", data.chars().take(100).collect::<String>());
+                                            log::debug!("[{tag}] <<< SSE 数据: {data}");
                                         }
                                     } else {
                                         log::debug!("[{tag}] <<< SSE: [DONE]");
@@ -523,3 +545,14 @@ pub fn create_logged_passthrough_stream(
         }
     }
 }
+
+fn format_headers(headers: &HeaderMap) -> String {
+    headers
+        .iter()
+        .map(|(key, value)| {
+            let value_str = value.to_str().unwrap_or("<non-utf8>");
+            format!("{key}={value_str}")
+        })
+        .collect::<Vec<_>>()
+        .join(", ")
+}