chore: promote read_file args to info log, fix content parsing

agents/ollama.ts

@@ -307,10 +307,21 @@ async function runOllamaLoop(ctx: AgentRunContext): Promise<AgentResult> {
       });
 
       // Track read_file calls so we can reconstruct context after pruning.
+      // read_file returns { content: "..." } JSON — parse out the actual content.
+      // Promote args logging to info so we can diagnose the path key format.
       if (toolName === "read_file") {
-        const path = (toolArgs as Record<string, unknown>)?.path;
-        if (typeof path === "string" && !readFileLog.has(path)) {
-          readFileLog.set(path, result.slice(0, 500));
+        const args = toolArgs as Record<string, unknown>;
+        log.info(`  read_file args keys: ${Object.keys(args).join(", ")} | path type: ${typeof args.path} | path: ${String(args.path).slice(0, 120)}`);
+        const path = typeof args.path === "string" ? args.path : undefined;
+        if (path && !readFileLog.has(path)) {
+          let excerpt: string;
+          try {
+            const parsed = JSON.parse(result) as { content?: string };
+            excerpt = (parsed.content ?? result).slice(0, 500);
+          } catch {
+            excerpt = result.slice(0, 500);
+          }
+          readFileLog.set(path, excerpt);
         }
       }