diff --git a/vibn-agent-runner/dist/agent-session-runner.js b/vibn-agent-runner/dist/agent-session-runner.js
index 742aabc..220aed6 100644
--- a/vibn-agent-runner/dist/agent-session-runner.js
+++ b/vibn-agent-runner/dist/agent-session-runner.js
@@ -18,35 +18,61 @@ function runBuildVerification(repoRoot, appPath) {
     const path = require("path");
     const { execSync } = require("child_process");
     const absoluteAppPath = path.join(repoRoot, appPath);
-    const pkgJsonPath = path.join(absoluteAppPath, "package.json");
-    if (!fs.existsSync(pkgJsonPath)) {
-        return { success: true }; // No package.json, skip build check
-    }
-    try {
-        const pkg = JSON.parse(fs.readFileSync(pkgJsonPath, "utf8"));
-        // Only verify if there is an explicit build script
-        if (!pkg.scripts || !pkg.scripts.build) {
-            return { success: true };
+    // Find all directories containing package.json (excluding node_modules, .git, .next, .vibncode, dist)
+    const pkgDirs = [];
+    function scan(dir) {
+        try {
+            const files = fs.readdirSync(dir);
+            if (files.includes("package.json")) {
+                pkgDirs.push(dir);
+            }
+            for (const file of files) {
+                if (file === "node_modules" ||
+                    file === ".git" ||
+                    file === ".next" ||
+                    file === ".vibncode" ||
+                    file === "dist") {
+                    continue;
+                }
+                const full = path.join(dir, file);
+                if (fs.statSync(full).isDirectory()) {
+                    scan(full);
+                }
+            }
         }
-        console.log(`[Ralph Loop] Running automatic build verification: npm run build inside ${absoluteAppPath}...`);
-        // Run npm run build with a 45s timeout to prevent hanging
-        execSync("npm run build", {
-            cwd: absoluteAppPath,
-            stdio: "pipe",
-            timeout: 45000,
-        });
-        return { success: true };
+        catch { }
     }
-    catch (err) {
-        const stderr = err.stderr
-            ? err.stderr.toString()
-            : err.message || String(err);
-        console.warn(`[Ralph Loop] Build verification failed:`, stderr);
-        return {
-            success: false,
-            error: stderr.slice(-3000), // Cap the log length to avoid flooding the prompt context
-        };
+    scan(absoluteAppPath);
+    if (pkgDirs.length === 0) {
+        return { success: true }; // No package.json anywhere, skip build check
     }
+    for (const dir of pkgDirs) {
+        const pkgJsonPath = path.join(dir, "package.json");
+        try {
+            const pkg = JSON.parse(fs.readFileSync(pkgJsonPath, "utf8"));
+            // Skip if there's no build script or if it's the root container which is just a workspace wrapper
+            if (!pkg.scripts || !pkg.scripts.build || pkg.name === "workspace") {
+                continue;
+            }
+            console.log(`[Ralph Loop] Running automatic build verification: npm run build inside ${dir}...`);
+            execSync("npm run build", {
+                cwd: dir,
+                stdio: "pipe",
+                timeout: 60000,
+            });
+        }
+        catch (err) {
+            const stderr = err.stderr
+                ? err.stderr.toString()
+                : err.message || String(err);
+            console.warn(`[Ralph Loop] Build verification failed inside ${dir}:`, stderr);
+            return {
+                success: false,
+                error: `Build failed in directory "${path.relative(repoRoot, dir)}":\n${stderr.slice(-3000)}`,
+            };
+        }
+    }
+    return { success: true };
 }
 // ── VIBN DB bridge ────────────────────────────────────────────────────────────
 async function patchSession(opts, payload) {
diff --git a/vibn-agent-runner/src/agent-session-runner.ts b/vibn-agent-runner/src/agent-session-runner.ts
index ad9fa5a..8d7d2d7 100644
--- a/vibn-agent-runner/src/agent-session-runner.ts
+++ b/vibn-agent-runner/src/agent-session-runner.ts
@@ -24,39 +24,73 @@ function runBuildVerification(
   const { execSync } = require("child_process");
 
   const absoluteAppPath = path.join(repoRoot, appPath);
-  const pkgJsonPath = path.join(absoluteAppPath, "package.json");
 
-  if (!fs.existsSync(pkgJsonPath)) {
-    return { success: true }; // No package.json, skip build check
+  // Find all directories containing package.json (excluding node_modules, .git, .next, .vibncode, dist)
+  const pkgDirs: string[] = [];
+
+  function scan(dir: string) {
+    try {
+      const files = fs.readdirSync(dir);
+      if (files.includes("package.json")) {
+        pkgDirs.push(dir);
+      }
+      for (const file of files) {
+        if (
+          file === "node_modules" ||
+          file === ".git" ||
+          file === ".next" ||
+          file === ".vibncode" ||
+          file === "dist"
+        ) {
+          continue;
+        }
+        const full = path.join(dir, file);
+        if (fs.statSync(full).isDirectory()) {
+          scan(full);
+        }
+      }
+    } catch {}
   }
 
-  try {
-    const pkg = JSON.parse(fs.readFileSync(pkgJsonPath, "utf8"));
-    // Only verify if there is an explicit build script
-    if (!pkg.scripts || !pkg.scripts.build) {
-      return { success: true };
+  scan(absoluteAppPath);
+
+  if (pkgDirs.length === 0) {
+    return { success: true }; // No package.json anywhere, skip build check
+  }
+
+  for (const dir of pkgDirs) {
+    const pkgJsonPath = path.join(dir, "package.json");
+    try {
+      const pkg = JSON.parse(fs.readFileSync(pkgJsonPath, "utf8"));
+      // Skip if there's no build script or if it's the root container which is just a workspace wrapper
+      if (!pkg.scripts || !pkg.scripts.build || pkg.name === "workspace") {
+        continue;
+      }
+
+      console.log(
+        `[Ralph Loop] Running automatic build verification: npm run build inside ${dir}...`,
+      );
+      execSync("npm run build", {
+        cwd: dir,
+        stdio: "pipe",
+        timeout: 60000,
+      });
+    } catch (err: any) {
+      const stderr = err.stderr
+        ? err.stderr.toString()
+        : err.message || String(err);
+      console.warn(
+        `[Ralph Loop] Build verification failed inside ${dir}:`,
+        stderr,
+      );
+      return {
+        success: false,
+        error: `Build failed in directory "${path.relative(repoRoot, dir)}":\n${stderr.slice(-3000)}`,
+      };
     }
-
-    console.log(
-      `[Ralph Loop] Running automatic build verification: npm run build inside ${absoluteAppPath}...`,
-    );
-    // Run npm run build with a 45s timeout to prevent hanging
-    execSync("npm run build", {
-      cwd: absoluteAppPath,
-      stdio: "pipe",
-      timeout: 45000,
-    });
-    return { success: true };
-  } catch (err: any) {
-    const stderr = err.stderr
-      ? err.stderr.toString()
-      : err.message || String(err);
-    console.warn(`[Ralph Loop] Build verification failed:`, stderr);
-    return {
-      success: false,
-      error: stderr.slice(-3000), // Cap the log length to avoid flooding the prompt context
-    };
   }
+
+  return { success: true };
 }
 
 export interface OutputLine {