Preserve clean mode for last run state

hooks/scripts/check-config.sh

@@ -63,14 +63,52 @@ fi
 # Check SETUP_COMPLETE (from file or env)
 SETUP_COMPLETE="${ENV_SETUP_COMPLETE:-${SETUP_COMPLETE:-}}"
 
+# Compute last-run summary line (if last-run.json exists)
+if [[ "${LAST30DAYS_CONFIG_DIR+x}" == "x" ]]; then
+  if [[ -n "$LAST30DAYS_CONFIG_DIR" ]]; then
+    LAST_RUN_FILE="$LAST30DAYS_CONFIG_DIR/last-run.json"
+  else
+    LAST_RUN_FILE=""
+  fi
+else
+  LAST_RUN_FILE="$HOME/.config/last30days/last-run.json"
+fi
+LAST_RUN_LINE=""
+if [[ -n "$LAST_RUN_FILE" && -f "$LAST_RUN_FILE" ]]; then
+  LAST_RUN_LINE=$(LAST_RUN_FILE="$LAST_RUN_FILE" python3 - <<'PY' 2>/dev/null
+import datetime
+import json
+import os
+
+path = os.environ["LAST_RUN_FILE"]
+try:
+    d = json.load(open(path))
+    topic = (d.get("topic") or "?")[:60]
+    ts = d.get("timestamp", "")
+    dt = datetime.datetime.fromisoformat(ts.replace("Z", "+00:00"))
+    delta = (datetime.datetime.now(datetime.timezone.utc) - dt).total_seconds()
+    if delta < 60: ago = f"{int(delta)}s ago"
+    elif delta < 3600: ago = f"{int(delta//60)}m ago"
+    elif delta < 86400: ago = f"{int(delta//3600)}h ago"
+    else: ago = f"{int(delta//86400)}d ago"
+    total = d.get("total", 0)
+    print(f"  Last run: \"{topic}\" · {ago} · {total} results")
+except Exception:
+    pass
+PY
+)
+fi
+
 # If setup has never been run, show welcome message for new users
 if [[ -z "$SETUP_COMPLETE" && -z "$CONFIG_FILE" && -z "${OPENAI_API_KEY:-}" && -z "${SCRAPECREATORS_API_KEY:-}" && -z "${AUTH_TOKEN:-}" && -z "${XAI_API_KEY:-}" ]]; then
   cat <<'EOF'
 /last30days: Ready to use. Run /last30days to get started — setup takes 30 seconds.
+  Research any topic across Reddit, HN, X, YouTube, Polymarket (last 30 days).
 
 Reddit, Hacker News, and Polymarket work out of the box.
 The setup wizard can unlock X/Twitter, YouTube, and more.
 EOF
+  [[ -n "$LAST_RUN_LINE" ]] && echo "$LAST_RUN_LINE"
   exit 0
 fi
 
@@ -121,9 +159,13 @@ fi
 if [[ -n "$HAS_SCRAPECREATORS" ]]; then
   # Fully configured — compact ready message
   echo "/last30days: Ready — ${SOURCE_COUNT} sources active."
+  echo "  Research any topic across social + market + web sources (last 30 days)."
+  [[ -n "$LAST_RUN_LINE" ]] && echo "$LAST_RUN_LINE"
 else
   # Setup done but missing ScrapeCreators — recommend it
   echo "/last30days: Ready — ${SOURCE_COUNT} sources active."
+  echo "  Research any topic across social + market + web sources (last 30 days)."
+  [[ -n "$LAST_RUN_LINE" ]] && echo "$LAST_RUN_LINE"
   echo "  Tip: Add ScrapeCreators for Reddit comments + TikTok + Instagram."
   echo "  100 free credits, no credit card — scrapecreators.com"
   echo "  last30days has no affiliation with any API provider."

skills/last30days/scripts/last30days.py

@@ -531,6 +531,25 @@ def _show_runtime_ui(
         progress.show_promo(promo, diag=diag)
 
 
+def _write_last_run(topic: str, report: "schema.Report") -> None:
+    try:
+        import datetime
+        if env.CONFIG_DIR is None:
+            return
+        target = env.CONFIG_DIR
+        target.mkdir(parents=True, exist_ok=True)
+        counts = {source: len(items) for source, items in report.items_by_source.items()}
+        payload = {
+            "topic": topic,
+            "timestamp": datetime.datetime.now(datetime.timezone.utc).isoformat(),
+            "sources": counts,
+            "total": sum(counts.values()),
+        }
+        (target / "last-run.json").write_text(json.dumps(payload, indent=2))
+    except Exception:
+        pass
+
+
 def main() -> int:
     parser = build_parser()
     # Use parse_known_args so setup sub-flags (--device-auth, --github,
@@ -870,6 +889,7 @@ def main() -> int:
         report, progress, diag,
         suppress_web_promo=bool(external_plan or comp_plan),
     )
+    _write_last_run(topic, report)
     if args.store:
         counts = persist_report(report)
         sys.stderr.write(

tests/test_last_run_state.py

@@ -0,0 +1,84 @@
+import json
+import os
+import subprocess
+import sys
+import tempfile
+import unittest
+from pathlib import Path
+
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+LAST30DAYS_SCRIPT = REPO_ROOT / "skills" / "last30days" / "scripts" / "last30days.py"
+
+
+def run_last30days(topic: str, env: dict[str, str]) -> subprocess.CompletedProcess[str]:
+    return subprocess.run(
+        [sys.executable, str(LAST30DAYS_SCRIPT), topic, "--mock", "--emit=json"],
+        cwd=REPO_ROOT,
+        env=env,
+        capture_output=True,
+        text=True,
+        check=False,
+    )
+
+
+class LastRunStateTests(unittest.TestCase):
+    def test_empty_config_override_disables_last_run_write(self):
+        with tempfile.TemporaryDirectory() as tmp:
+            home = Path(tmp) / "home"
+            env = os.environ.copy()
+            env["HOME"] = str(home)
+            env["LAST30DAYS_CONFIG_DIR"] = ""
+
+            result = run_last30days("synthetic eval query", env)
+
+            self.assertEqual(result.returncode, 0, result.stderr)
+            self.assertFalse((home / ".config" / "last30days" / "last-run.json").exists())
+
+    def test_custom_config_override_writes_last_run_to_custom_dir(self):
+        with tempfile.TemporaryDirectory() as tmp:
+            config_dir = Path(tmp) / "custom-config"
+            env = os.environ.copy()
+            env["HOME"] = str(Path(tmp) / "home")
+            env["LAST30DAYS_CONFIG_DIR"] = str(config_dir)
+
+            result = run_last30days("custom config query", env)
+
+            self.assertEqual(result.returncode, 0, result.stderr)
+            payload = json.loads((config_dir / "last-run.json").read_text())
+            self.assertEqual(payload["topic"], "custom config query")
+            self.assertGreaterEqual(payload["total"], 0)
+
+    def test_hook_reads_last_run_from_custom_config_dir(self):
+        with tempfile.TemporaryDirectory() as tmp:
+            config_dir = Path(tmp) / "custom-config"
+            config_dir.mkdir()
+            (config_dir / "last-run.json").write_text(
+                json.dumps(
+                    {
+                        "topic": "custom hook query",
+                        "timestamp": "2026-04-30T00:00:00+00:00",
+                        "sources": {"reddit": 2},
+                        "total": 2,
+                    }
+                )
+            )
+            env = os.environ.copy()
+            env["HOME"] = str(Path(tmp) / "home")
+            env["LAST30DAYS_CONFIG_DIR"] = str(config_dir)
+
+            result = subprocess.run(
+                ["bash", "hooks/scripts/check-config.sh"],
+                cwd=REPO_ROOT,
+                env=env,
+                capture_output=True,
+                text=True,
+                check=False,
+            )
+
+            self.assertEqual(result.returncode, 0, result.stderr)
+            self.assertIn('Last run: "custom hook query"', result.stdout)
+
+
+if __name__ == "__main__":
+    unittest.main()