fix: update tool-call extraction logic for Pi session JSONL

Refine parsing of assistant tool calls in review.sh to handle "toolCall" and "arguments" structures, aligning with Pi session format changes.

scripts/review.sh

@@ -255,14 +255,21 @@ if [ ! -s /tmp/pi-review.md ]; then
   exit 1
 fi
 
+echo "Debug mode: PI_DEBUG=${PI_DEBUG}"
+
 # If debug mode, extract tool calls from session and append to review
 if [ "${PI_DEBUG}" = "true" ]; then
+  echo "Session dir contents:"
+  find /tmp/pi-session -type f 2>/dev/null || echo "  (none)"
   SESSION_FILE=$(find /tmp/pi-session -name '*.jsonl' -type f 2>/dev/null | head -1)
+  echo "Session file: ${SESSION_FILE:-<none found>}"
   TOOL_LOG=""
 
   if [ -n "${SESSION_FILE}" ]; then
-    # Extract tool-use entries: each line is a JSON object.
-    # Tool calls appear as messages with tool_use/function_call content.
+    # Extract tool-call entries from Pi session JSONL.
+    # Pi stores assistant messages with content blocks of type "toolCall"
+    # (NOT the Anthropic SDK's "tool_use"), using "arguments" (NOT "input").
+    # Tool results are separate entries with role "toolResult".
     TOOL_LOG=$(node -e "
       const fs = require('fs');
       const lines = fs.readFileSync('${SESSION_FILE}', 'utf8').trim().split('\n');
@@ -270,18 +277,16 @@ if [ "${PI_DEBUG}" = "true" ]; then
       for (const line of lines) {
         try {
           const entry = JSON.parse(line);
-          if (entry.type === 'message') {
-            const msg = entry.message;
-            // Model requesting tool use
-            if (msg.role === 'assistant' && msg.content) {
-              const parts = Array.isArray(msg.content) ? msg.content : [msg.content];
-              for (const part of parts) {
-                if (typeof part === 'object' && part.type === 'tool_use') {
-                  const input = part.input || {};
-                  const args = Object.entries(input).map(([k,v]) => k + '=' + JSON.stringify(v)).join(' ');
-                  entries.push('[tool:' + part.name + '] ' + args);
-                }
-              }
+          if (entry.type !== 'message') continue;
+          const msg = entry.message;
+          if (!msg || !msg.content) continue;
+          const parts = Array.isArray(msg.content) ? msg.content : [msg.content];
+          for (const part of parts) {
+            if (typeof part !== 'object') continue;
+            if (part.type === 'toolCall') {
+              const args = Object.entries(part.arguments || {})
+                .map(([k,v]) => k + '=' + JSON.stringify(v)).join(' ');
+              entries.push('[tool:' + part.name + '] ' + args);
             }
           }
         } catch {}