feat: add workflow studio and postgres support

src/proxy/conductor/conductor.rs

@@ -267,6 +267,7 @@ mod tests {
             route_id: Some(10),
             site_id: 20,
             account_id: Some(30),
+            account_unit_cost: None,
             base_url: "https://example.test/v1".into(),
             api_key: "key".into(),
             model: "gpt-5.5".into(),

src/proxy/conductor/types.rs

@@ -11,6 +11,7 @@ pub struct SelectedChannel {
     pub route_id: Option<i64>,
     pub site_id: i64,
     pub account_id: Option<i64>,
+    pub account_unit_cost: Option<f64>,
     pub base_url: String,
     pub api_key: String,
     pub model: String,

src/proxy/executors/mod.rs

@@ -76,6 +76,23 @@ fn looks_like_sse(text: &str) -> bool {
     text.trim_start().starts_with("data:")
 }
 
+fn openai_compatible_base_url(base_url: &str) -> String {
+    let trimmed = base_url.trim().trim_end_matches('/');
+    if trimmed.ends_with("/v1") || trimmed.contains("/v1/") {
+        trimmed.to_string()
+    } else {
+        format!("{trimmed}/v1")
+    }
+}
+
+fn upstream_url(base_url: &str, path_suffix: &str) -> String {
+    format!(
+        "{}/{}",
+        openai_compatible_base_url(base_url),
+        path_suffix.trim_start_matches('/')
+    )
+}
+
 fn aggregate_chat_sse(text: &str, fallback_model: &str) -> Option<Value> {
     let mut id: Option<String> = None;
     let mut created: Option<i64> = None;
@@ -162,7 +179,7 @@ pub async fn execute_chat_completions(
     body: Value,
 ) -> AppResult<Value> {
     let client = http_client();
-    let upstream_url = format!("{}/chat/completions", route.base_url.trim_end_matches('/'));
+    let upstream_url = upstream_url(&route.base_url, "/chat/completions");
 
     let resp = client
         .post(&upstream_url)
@@ -279,8 +296,8 @@ pub async fn execute_anthropic_messages_stream(
     let mut stream = resp.bytes_stream();
     use futures::StreamExt;
     while let Some(chunk_result) = stream.next().await {
-        let bytes = chunk_result
-            .map_err(|e| AppError::UpstreamError(format!("Stream error: {e}")))?;
+        let bytes =
+            chunk_result.map_err(|e| AppError::UpstreamError(format!("Stream error: {e}")))?;
         let text = String::from_utf8_lossy(&bytes).to_string();
         frames.extend(normalize_anthropic_sse_frames(&text));
     }
@@ -328,7 +345,9 @@ fn normalize_anthropic_sse_frame(frame: &str) -> Option<String> {
 
     let choice = &event.choices[0];
     if choice.delta.role.is_some() {
-        let id = event.id.unwrap_or_else(|| format!("msg_{}", uuid::Uuid::new_v4().simple()));
+        let id = event
+            .id
+            .unwrap_or_else(|| format!("msg_{}", uuid::Uuid::new_v4().simple()));
         return Some(format!(
             "event: message_start\ndata: {}\n\n",
             serde_json::json!({
@@ -392,11 +411,7 @@ pub async fn execute_streaming_request(
     body: Value,
 ) -> AppResult<Vec<String>> {
     let client = http_client();
-    let upstream_url = format!(
-        "{}/{}",
-        route.base_url.trim_end_matches('/'),
-        path_suffix.trim_start_matches('/')
-    );
+    let upstream_url = upstream_url(&route.base_url, path_suffix);
 
     let resp = client
         .post(&upstream_url)
@@ -448,11 +463,7 @@ pub async fn execute_proxy_request(
     body: Value,
 ) -> AppResult<Value> {
     let client = http_client();
-    let upstream_url = format!(
-        "{}/{}",
-        route.base_url.trim_end_matches('/'),
-        path_suffix.trim_start_matches('/')
-    );
+    let upstream_url = upstream_url(&route.base_url, path_suffix);
 
     let resp = client
         .post(&upstream_url)
@@ -483,11 +494,7 @@ pub async fn execute_proxy_request(
 /// Generic GET proxy request to an upstream endpoint path.
 pub async fn execute_proxy_get(route: UpstreamRoute, path_suffix: &str) -> AppResult<Value> {
     let client = http_client();
-    let upstream_url = format!(
-        "{}/{}",
-        route.base_url.trim_end_matches('/'),
-        path_suffix.trim_start_matches('/')
-    );
+    let upstream_url = upstream_url(&route.base_url, path_suffix);
 
     let resp = client
         .get(&upstream_url)
@@ -602,10 +609,7 @@ pub async fn execute_image_generation(
     body: Value,
 ) -> AppResult<Value> {
     let client = http_client();
-    let upstream_url = format!(
-        "{}/images/generations",
-        route.base_url.trim_end_matches('/')
-    );
+    let upstream_url = upstream_url(&route.base_url, "/images/generations");
 
     let resp = client
         .post(&upstream_url)
@@ -664,7 +668,7 @@ pub async fn execute_image_edit(
     use reqwest::multipart::{Form, Part};
 
     let client = http_client();
-    let upstream_url = format!("{}/images/edits", route.base_url.trim_end_matches('/'));
+    let upstream_url = upstream_url(&route.base_url, "/images/edits");
 
     let mut form = Form::new();
     for field in fields {

src/proxy/token_router/router.rs

@@ -29,6 +29,7 @@ struct ChannelRow {
     site_api_key: Option<String>,
     account_access_token: String,
     account_api_token: Option<String>,
+    account_unit_cost: Option<f64>,
     token_name: Option<String>,
     token_value: Option<String>,
     source_model: Option<String>,
@@ -148,6 +149,7 @@ impl TokenRouter {
                 s.api_key AS site_api_key,
                 a.access_token AS account_access_token,
                 a.api_token AS account_api_token,
+                a.unit_cost AS account_unit_cost,
                 at.name AS token_name,
                 at.token AS token_value,
                 rc.source_model AS source_model
@@ -198,6 +200,7 @@ impl TokenRouter {
                 route_id: Some(row.route_id),
                 site_id: row.site_id,
                 account_id: Some(row.account_id),
+                account_unit_cost: row.account_unit_cost,
                 base_url: row.base_url,
                 api_key: api_key
                     .trim()