Enable Gemini thinking stream

vibn-agent-runner/src/llm/gemini-chat.ts

@@ -114,6 +114,12 @@ export async function callGeminiChat(opts: {
       maxOutputTokens: 8192,
     };
 
+    if (GEMINI_MODEL.includes("thinking") || GEMINI_MODEL.includes("pro")) {
+      config.thinkingConfig = {
+        thinkingBudget: 1024, includeThoughts: true
+      };
+    }
+
     if (opts.systemPrompt) {
       config.systemInstruction = opts.systemPrompt;
     }
@@ -197,6 +203,12 @@ export async function* streamGeminiChat(opts: {
       maxOutputTokens: 8192,
     };
 
+    if (GEMINI_MODEL.includes("thinking") || GEMINI_MODEL.includes("pro")) {
+      config.thinkingConfig = {
+        thinkingBudget: 1024, includeThoughts: true
+      };
+    }
+
     if (opts.systemPrompt) {
       config.systemInstruction = opts.systemPrompt;
     }

vibn-frontend/app/[workspace]/project/[projectId]/(home)/preview/page.tsx

@@ -161,7 +161,12 @@ export default function PreviewTab() {
     if (loading || !anatomy) return;
     ensureCalledRef.current = true;
 
-    fetch(`/api/projects/${projectId}/dev-server/ensure`, {
+    let url = `/api/projects/${projectId}/dev-server/ensure`;
+    if (selectedPort) {
+      url += `?port=${selectedPort}`;
+    }
+
+    fetch(url, {
       method: "POST",
       credentials: "include",
     })
@@ -238,7 +243,9 @@ export default function PreviewTab() {
         onStart={() => {
           setIsForceStarting(true);
           fetch(
-            `/api/projects/${projectId}/dev-server/ensure?forceStart=true`,
+            `/api/projects/${projectId}/dev-server/ensure?forceStart=true${
+              selectedPort ? `&port=${selectedPort}` : ""
+            }`,
             {
               method: "POST",
             },

vibn-frontend/app/api/projects/[projectId]/dev-server/ensure/route.ts

@@ -56,7 +56,18 @@ export async function POST(
   const projectSlug = (project.data?.slug as string) || project.id;
   const projectName = (project.data?.name as string) || "Project";
 
-  // 1. Is a dev server already active on the primary port?
+  const url = new URL(request.url);
+  const requestedPortStr = url.searchParams.get("port");
+  const forceStart = url.searchParams.get("forceStart") === "true";
+
+  // 1. Is a dev server already active on the requested port (or most recent port)?
+  let portFilterSql = "";
+  const queryParams: any[] = [projectId];
+  if (requestedPortStr) {
+    portFilterSql = "AND port = $2";
+    queryParams.push(parseInt(requestedPortStr, 10));
+  }
+
   const active = await queryOne<{
     id: string;
     state: string;
@@ -67,13 +78,13 @@ export async function POST(
     `SELECT id, state, preview_url, command, port
        FROM fs_dev_servers
       WHERE project_id = $1
-        AND port = 3000
+        ${portFilterSql}
         AND (
           state = 'running' OR
           (state = 'starting' AND started_at > NOW() - INTERVAL '15 minutes')
         )
       ORDER BY started_at DESC LIMIT 1`,
-    [projectId],
+    queryParams,
   );
 
   // A `starting` row is mid cold-boot; the readiness probe will promote it to
@@ -124,7 +135,17 @@ export async function POST(
   }
 
   // 2. Do we have a previous config to restart from?
-  //    (Limit to port 3000 since that's what the preview pane embeds)
+  //    (Limit to requested port or most recent)
+  let lastPortFilterSql = "";
+  const lastQueryParams: any[] = [projectId];
+  if (requestedPortStr) {
+    lastPortFilterSql = "AND port = $2";
+    lastQueryParams.push(parseInt(requestedPortStr, 10));
+  } else if (active?.port) {
+    lastPortFilterSql = "AND port = $2";
+    lastQueryParams.push(active.port);
+  }
+
   const last = await queryOne<{
     command: string;
     port: number;
@@ -132,13 +153,12 @@ export async function POST(
   }>(
     `SELECT command, port, preview_url
        FROM fs_dev_servers
-      WHERE project_id = $1 AND port = 3000
+      WHERE project_id = $1 ${lastPortFilterSql}
       ORDER BY started_at DESC LIMIT 1`,
-    [projectId],
+    lastQueryParams,
   );
 
-  const forceStart =
-    new URL(request.url).searchParams.get("forceStart") === "true";
+  const forceStartQuery = forceStart; // we already parsed this above
 
   // If there's no history, we STILL want to auto-start! We just assume it's a standard
   // Next.js app on port 3000. Forcing the user to hit "Start Preview" on a new project

vibn-frontend/components/vibn-chat/chat-panel.tsx

@@ -635,9 +635,23 @@ function Timeline({ entries }: { entries: TimelineEntry[] }) {
     <div style={{ marginBottom: 6 }}>
       {items.map((item, i) => {
         if (item.kind === "thought") {
-          // Reasoning/thought bubbles are intentionally not rendered — they're
-          // internal and add noise to the chat.
-          return null;
+          return (
+            <div
+              key={i}
+              style={{
+                fontSize: "0.85rem",
+                color: "#6b7280",
+                fontStyle: "italic",
+                padding: "8px 12px",
+                background: "#f9fafb",
+                borderLeft: "2px solid #d1d5db",
+                marginBottom: 8,
+                whiteSpace: "pre-wrap",
+              }}
+            >
+              Thinking: {item.text}
+            </div>
+          );
         }
         if (item.kind === "text") {
           return <TimelineText key={i} text={item.text} />;

vibn-frontend/lib/dev-container.ts

@@ -413,9 +413,9 @@ export async function suspendDevContainer(projectId: string): Promise<void> {
     [projectId],
   );
 
-  // Also mark the fixed port-3000 app as stopped so the UI knows
+  // Also mark ALL preview servers as stopped so the UI knows
   await query(
-    `UPDATE fs_dev_servers SET state = 'stopped' WHERE project_id = $1 AND port = 3000`,
+    `UPDATE fs_dev_servers SET state = 'stopped' WHERE project_id = $1 AND state != 'stopped'`,
     [projectId],
   ).catch(() => {});
 }
@@ -435,9 +435,9 @@ export async function resumeDevContainer(projectId: string): Promise<void> {
     [projectId],
   );
 
-  // Mark the fixed port-3000 app as running again since the container boots it
+  // Mark the last run preview server as starting again since we may need to boot it
   await query(
-    `UPDATE fs_dev_servers SET state = 'running' WHERE project_id = $1 AND port = 3000`,
+    `UPDATE fs_dev_servers SET state = 'starting' WHERE project_id = $1 AND state = 'stopped' AND id = (SELECT id FROM fs_dev_servers WHERE project_id = $1 ORDER BY started_at DESC LIMIT 1)`,
     [projectId],
   ).catch(() => {});
 }
@@ -1065,10 +1065,12 @@ export async function startDevServer(
   const logFile = `/var/log/vibn-dev/${id}.log`;
   const listenSafeCommand = ensurePreviewListenAllInterfaces(opts.command);
 
+  const secret = devAuthSecret(opts.projectId);
   const launch =
     `mkdir -p /var/log/vibn-dev && ` +
     `cd /workspace && ` +
     `nohup env PORT=${opts.port} VIBN_DEV_SERVER_ID=${id} ` +
+    `AUTH_SECRET=${secret} NEXTAUTH_SECRET=${secret} AUTH_TRUST_HOST=true ` +
     `bash -lc ${shellEscape(listenSafeCommand)} > ${logFile} 2>&1 & ` +
     `echo $!`;