feat(@scripts): ✨ add cwd extraction helper function

Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>

bin/_claude-triage

@@ -89,6 +89,22 @@ def get_text(entry: dict) -> str:
     return ""
 
 
+def read_cwd_only(jsonl: Path) -> str:
+    """Cheap version of compress_session that stops at the first cwd field."""
+    try:
+        with jsonl.open(encoding="utf-8", errors="replace") as f:
+            for line in f:
+                try:
+                    entry = json.loads(line)
+                except json.JSONDecodeError:
+                    continue
+                if entry.get("cwd"):
+                    return entry["cwd"]
+    except OSError:
+        return ""
+    return ""
+
+
 def compress_session(jsonl: Path) -> tuple[str, str, str]:
     """Return (cwd, first_user_text, transcript_excerpt)."""
     first_user = ""
@@ -208,12 +224,20 @@ async def main_async(args: argparse.Namespace) -> None:
         cache_key = f"{jsonl.stem}:{mtime}"
         hit = None if args.refresh else cache.get(template_id, cache_key)
         if hit is not None:
-            # Carry through identifying metadata in case the cached payload
-            # was written by an older script revision that didn't enrich.
+            # The SDK cache stores the raw LLM response (priority/status/
+            # summary/next_action); enrichment (uuid/cwd/mtime) is added at
+            # read time by the SDK. Since we bypass run_batched for cached
+            # items, re-enrich here. cwd needs a tiny disk read (first cwd
+            # line of the jsonl) but no LLM call.
+            cwd = hit.get("cwd") or read_cwd_only(jsonl)
+            if not cwd:
+                # Couldn't determine cwd → skip; rclaude can't resume without it.
+                continue
             cached_results.append({
                 **hit,
-                "uuid": hit.get("uuid", jsonl.stem),
-                "mtime": hit.get("mtime", mtime),
+                "uuid": hit.get("uuid") or jsonl.stem,
+                "mtime": hit.get("mtime") or mtime,
+                "cwd":   cwd,
             })
             continue
         uncached.append((mtime, jsonl, cache_key))