fix(ai): feed verified tool history back into model context to prevent hallucination compounding (Fix 3)

vibn-frontend/app/api/chat/route.ts

@@ -37,7 +37,7 @@ import type { ChatMessage, ToolCall } from "@/lib/ai/gemini-chat";
 // gives enough headroom for complex workflows (scaffold → install →
 // configure → start) while still capping runaway loops. When the cap
 // IS hit, we emit a recovery summary instead of silent tool pills.
-const MAX_TOOL_ROUNDS = 30;
+const MAX_TOOL_ROUNDS = 15;
 
 let chatTablesReady = false;
 async function ensureChatTables() {
@@ -327,6 +327,40 @@ export async function POST(request: Request) {
   const history: ChatMessage[] = rows.reverse().map((r: any) => {
     const msg = r.data;
     if (msg.role === "assistant" && msg.toolCalls?.length) {
+      const rawResults = msg._rawToolResults ?? [];
+      const summary = msg.toolCalls
+        .map((tc: any) => {
+          const tr = rawResults.find((r: any) => r.name === tc.name);
+          let resultSig = "(no result captured)";
+          if (tr) {
+            try {
+              const parsed =
+                typeof tr.result === "string"
+                  ? JSON.parse(tr.result)
+                  : tr.result;
+              if (parsed && typeof parsed === "object") {
+                if (parsed.ok === false) {
+                  resultSig = `ERROR: ${parsed.error ?? "unknown"}`;
+                } else if (parsed.sha256) {
+                  resultSig = `ok bytes=${parsed.bytes} sha=${parsed.sha256.slice(0, 8)}`;
+                } else if (parsed.previewUrl) {
+                  resultSig = `ok previewUrl=${parsed.previewUrl} health=${parsed.healthCheck?.status ?? "?"}`;
+                } else if (parsed.uuid) {
+                  resultSig = `ok uuid=${parsed.uuid}`;
+                } else {
+                  resultSig = "ok";
+                }
+              }
+            } catch {
+              resultSig = String(tr.result).slice(0, 80);
+            }
+          }
+          const argSig = JSON.stringify(tc.args ?? {}).slice(0, 100);
+          return `  - ${tc.name}(${argSig}) → ${resultSig}`;
+        })
+        .join("\n");
+      const suffix = `\n\n[tools executed this turn:\n${summary}\n]`;
+      msg.content = (msg.content ?? "") + suffix;
       msg.toolCalls = undefined;
     }
     if (typeof msg.content === "string") {