diff --git a/.gitea/workflows/daily-digest.yml b/.gitea/workflows/daily-digest.yml
new file mode 100644
index 0000000..17227c1
--- /dev/null
+++ b/.gitea/workflows/daily-digest.yml
@@ -0,0 +1,29 @@
+name: daily-digest
+on:
+  schedule:
+    - cron: "0 6 * * *"
+  workflow_dispatch:
+
+jobs:
+  send-digest:
+    name: Send daily digest email
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    env:
+      PYTHONUNBUFFERED: "1"
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - name: Run daily digest
+        env:
+          SMTP_HOST: ${{ secrets.SMTP_HOST }}
+          SMTP_PORT: ${{ secrets.SMTP_PORT }}
+          SMTP_USER: ${{ secrets.SMTP_USER }}
+          SMTP_PASS: ${{ secrets.SMTP_PASS }}
+          SMTP_FROM: ${{ secrets.SMTP_FROM }}
+        run: |
+          python scripts/daily_digest.py --email operator@example.com
diff --git a/README.md b/README.md
index d161e88..92ae0f2 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@
 
 ## Where to start
 
+- **30-minute walkthrough** — [`docs/operator-tutorial.md`](docs/operator-tutorial.md) (REQ-INB-53). Guided tour for the new operator: setup → first run → day-to-day → incident response → hardening.
 - **Operations runbook** — [`docs/operations-runbook.md`](docs/operations-runbook.md). System overview, service inventory, workflow operations, observability, failure modes, security, cost, glossary. The first thing to read on day 1 of incident response.
 - **Extraction contract** — [`docs/extraction-contract.md`](docs/extraction-contract.md). How a raw email becomes a NocoDB record. Source of truth for the `inboxos:classify` + `inboxos:extract-<module>` prompt family.
 - **NocoDB schema** — [`docs/schemas.md`](docs/schemas.md). The four module tables (`finance`, `crm`, `intel`, `promotions`) and the Message-ID idempotency contract.
diff --git a/docs/operations-runbook.md b/docs/operations-runbook.md
index f0c2c72..863cb1e 100644
--- a/docs/operations-runbook.md
+++ b/docs/operations-runbook.md
@@ -86,6 +86,8 @@ All workflows live in `.gitea/workflows/`. They are declarative, version-control
 
 **Quickstart:** for a 15-minute green-field spin-up, see `docs/quickstart.md` and `scripts/quickstart.sh` (REQ-INB-40). The script runs the 8 steps below in sequence and prints the runbook §X.Y cross-ref on any failure.
 
+**Daily digest:** see `scripts/daily_digest.py` and `.gitea/workflows/daily-digest.yml` (REQ-INB-47). The workflow runs on `cron 0 6 * * *` and emails a one-line per-module summary.
+
 ### 3.1 Live pipeline — `live-pipeline.yml`
 
 | Aspect         | Value                                                                                       |
diff --git a/docs/operator-tutorial.md b/docs/operator-tutorial.md
new file mode 100644
index 0000000..230930c
--- /dev/null
+++ b/docs/operator-tutorial.md
@@ -0,0 +1,62 @@
+# InboxOS — Operator Tutorial (30-minute walkthrough)
+
+A guided tour for the new operator. Read top-to-bottom; each chapter takes ~5-10 minutes.
+
+## Chapter 1: Setup (5 min)
+
+Goal: get a working InboxOS instance on your laptop.
+
+1. Clone the repo: `git clone https://git.cloudinit.dev/jc-capital/inboxos.git && cd inboxos`
+2. Run `scripts/quickstart.sh` (REQ-INB-40). The script pulls Docker images, generates `.env`, brings up the stack, and runs a 1-message smoke test.
+3. Login to NocoDB at http://localhost:8080.
+4. See the 4 module tables in the left-nav: `finance`, `crm`, `intel`, `promotions`.
+
+Next: see `docs/operations-runbook.md §3.1` (Live pipeline) for the production setup.
+
+## Chapter 2: First run (5 min)
+
+Goal: process a real .mbox file end-to-end.
+
+1. Get a sample .mbox (or use `tests/fixtures/single.mbox` from the repo).
+2. Run `python pipelines/historical_pipeline.py --mbox /path/to/file.mbox`.
+3. Watch the JSONL events stream to stderr.
+4. In NocoDB, look for the row in the appropriate module table.
+5. Check the 4 curated views (REQ-INB-41) in the left-nav.
+
+Next: see `docs/extraction-contract.md` for the prompt contract.
+
+## Chapter 3: Day-to-day (10 min)
+
+Goal: monitor the live pipeline and use the operator tools.
+
+1. The live pipeline runs on `cron */5 * * * *` via `.gitea/workflows/live-pipeline.yml`. Check Gitea Actions for the last run.
+2. Run `scripts/dashboard.py` (REQ-INB-50) for an at-a-glance terminal view.
+3. To find a specific email, use `scripts/find_email.py --mid <Message-ID>` (REQ-INB-43) or `--sender`.
+4. To inspect a recent run in detail, use `scripts/explain_run.py` (REQ-INB-42) or `scripts/explain_run.py --json | jq`.
+5. To see monthly costs, run `scripts/cost_report.py --month 2026-06` (REQ-INB-54).
+
+Next: see `docs/operations-runbook.md §4` (Observability).
+
+## Chapter 4: Incident response (5 min)
+
+Goal: recover from a stuck or failed run.
+
+1. If something is broken, start at the ERROR-NN catalog (REQ-INB-46) at `docs/operations-runbook.md §5`.
+2. The 10 ERROR-NN codes map 1:1 to the §5.X subsections.
+3. To replay failed/skipped MIDs, use `scripts/replay.py --status errored --confirm` (REQ-INB-45).
+4. To reclassify a MID into a different module, use `scripts/reclassify.py --mid <MID> --new-module crm --confirm` (REQ-INB-44).
+5. If the smoke test fails on a fresh install, the runbook §5 has the recovery procedure per failure mode.
+
+Next: see `docs/operations-runbook.md §5.7` (Backup and restore).
+
+## Chapter 5: Hardening (5 min)
+
+Goal: understand the v1.4 product-grade security posture.
+
+1. Container hardening (REQ-INB-55): all 6 services run with `read_only: true` (or `tmpfs: [/tmp]` for write-required services), `cap_drop: [ALL]`, and `security_opt: no-new-privileges`. See `docker/docker-compose.yml`.
+2. PII-scrub (REQ-INB-57): SSN, credit-card, IBAN, and phone numbers are masked before the email body is sent to Ollama. The audit trail is in `_artifacts/pii_scrub.jsonl`.
+3. Secret redaction (REQ-INB-56): all 9 secret env vars are auto-masked in CI logs via `::add-mask::`.
+4. DPIA (REQ-INB-58): see `docs/security/dpia.md` for the GDPR Art. 35 data protection impact assessment.
+5. Threat model (REQ-INB-59): see `docs/security/threat-model.md` for the STRIDE-per-component decomposition.
+
+Next: see `docs/security/dpia.md` and `docs/security/threat-model.md`.
diff --git a/scripts/daily_digest.py b/scripts/daily_digest.py
new file mode 100755
index 0000000..03ed0fb
--- /dev/null
+++ b/scripts/daily_digest.py
@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+"""Daily digest: one-line-per-module summary of yesterday's runs.
+
+v1.4 REQ-INB-47.
+"""
+from __future__ import annotations
+
+import argparse
+import json
+import os
+import smtplib
+import sys
+from datetime import date, datetime, timedelta
+from email.message import EmailMessage
+
+
+ARTIFACTS_DIR = os.environ.get("INBOXOS_ARTIFACTS_DIR", "pipelines/_artifacts")
+
+
+def render(date_str: str) -> str:
+    """Return the one-line summary for the date."""
+    path = os.path.join(ARTIFACTS_DIR, f"{date_str}.jsonl")
+    if not os.path.exists(path):
+        return f"{date_str}: no runs"
+    finance = crm = intel = promo = errors = 0
+    with open(path) as f:
+        for line in f:
+            try:
+                ev = json.loads(line)
+            except json.JSONDecodeError:
+                continue
+            mod = ev.get("module", "")
+            if mod in ("finance", "crm", "intel", "promotions"):
+                locals()[mod] += 1
+            if ev.get("event", "").endswith("_error"):
+                errors += 1
+    return f"{date_str}: finance={finance}, crm={crm}, intel={intel}, promotions={promo}, errors={errors}"
+
+
+def send_email(body: str, to_addr: str) -> None:
+    host = os.environ.get("SMTP_HOST", "")
+    if not host:
+        print(body)
+        return
+    msg = EmailMessage()
+    msg["Subject"] = f"InboxOS daily digest — {date.today().isoformat()}"
+    msg["From"] = os.environ.get("SMTP_FROM", "inboxos@local")
+    msg["To"] = to_addr
+    msg.set_content(body)
+    with smtplib.SMTP(host, int(os.environ.get("SMTP_PORT", "25"))) as s:
+        if os.environ.get("SMTP_USER"):
+            s.starttls()
+            s.login(os.environ["SMTP_USER"], os.environ["SMTP_PASS"])
+        s.send_message(msg)
+
+
+def main() -> int:
+    p = argparse.ArgumentParser(description="InboxOS daily digest")
+    p.add_argument("--date", help="YYYY-MM-DD (default: yesterday)")
+    p.add_argument("--email", help="Send to this address via SMTP")
+    args = p.parse_args()
+
+    if not args.date:
+        args.date = (date.today() - timedelta(days=1)).isoformat()
+
+    body = render(args.date)
+    if args.email:
+        send_email(body, args.email)
+    else:
+        print(body)
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/scripts/dashboard.py b/scripts/dashboard.py
new file mode 100755
index 0000000..a7495ed
--- /dev/null
+++ b/scripts/dashboard.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python3
+"""TUI/CLI dashboard for InboxOS operator.
+
+v1.4 REQ-INB-50.
+"""
+from __future__ import annotations
+
+import argparse
+import json
+import os
+import sys
+
+
+ARTIFACTS_DIR = os.environ.get("INBOXOS_ARTIFACTS_DIR", "pipelines/_artifacts")
+METRICS_DIR = os.environ.get("INBOXOS_METRICS_DIR", "pipelines/_metrics")
+
+
+def _read_json(path: str) -> dict | None:
+    if not os.path.exists(path):
+        return None
+    try:
+        with open(path) as f:
+            return json.load(f)
+    except (json.JSONDecodeError, OSError):
+        return None
+
+
+def render() -> str:
+    out = []
+    out.append("=" * 60)
+    out.append(f"InboxOS Operator Dashboard — {os.environ.get('HOSTNAME', '?')}")
+    out.append("=" * 60)
+
+    last_run = _read_json(os.path.join(ARTIFACTS_DIR, "last_run.json"))
+    if last_run:
+        out.append(f"Last run: {last_run.get('run_id', '?')} ({last_run.get('run_type', '?')})")
+        out.append(f"  started={last_run.get('started_at', '?')}  status={last_run.get('status', '?')}")
+        out.append(f"  mids: total={last_run.get('mids_total', 0)}  errored={last_run.get('mids_errored', 0)}")
+        mods = last_run.get("modules", {})
+        out.append(f"  modules: finance={mods.get('finance', 0)}  crm={mods.get('crm', 0)}  "
+                   f"intel={mods.get('intel', 0)}  promotions={mods.get('promotions', 0)}")
+    else:
+        out.append("Last run: (no data)")
+
+    health = _read_json(os.path.join(METRICS_DIR, "healthcheck.json"))
+    if health:
+        out.append("")
+        out.append(f"Healthcheck: {health.get('last_run_status', '?')}")
+        out.append(f"  pending={health.get('pending_count', 0)}  error_24h={health.get('error_count_24h', 0)}")
+        out.append(f"  s3_archive_gb={health.get('archive_size_gb', 0)}")
+    else:
+        out.append("")
+        out.append("Healthcheck: (no data)")
+
+    out.append("=" * 60)
+    return "\n".join(out)
+
+
+def main() -> int:
+    p = argparse.ArgumentParser(description="InboxOS operator dashboard")
+    p.add_argument("--watch", action="store_true", help="Refresh every 30s")
+    args = p.parse_args()
+
+    if args.watch:
+        import time
+        while True:
+            sys.stdout.write("\033[2J\033[H")
+            sys.stdout.write(render() + "\n")
+            sys.stdout.flush()
+            time.sleep(30)
+    else:
+        print(render())
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/scripts/explain_run.py b/scripts/explain_run.py
new file mode 100755
index 0000000..964077b
--- /dev/null
+++ b/scripts/explain_run.py
@@ -0,0 +1,100 @@
+#!/usr/bin/env python3
+"""Explain a run: structured-log → human summary.
+
+v1.4 REQ-INB-42.
+"""
+from __future__ import annotations
+
+import argparse
+import json
+import os
+import sys
+from datetime import datetime
+
+
+ARTIFACTS_DIR = os.environ.get("INBOXOS_ARTIFACTS_DIR", "pipelines/_artifacts")
+
+
+def _read_jsonl(path: str) -> list[dict]:
+    if not os.path.exists(path):
+        return []
+    with open(path) as f:
+        return [json.loads(line) for line in f if line.strip()]
+
+
+def _read_last_run() -> dict:
+    path = os.path.join(ARTIFACTS_DIR, "last_run.json")
+    if not os.path.exists(path):
+        return {}
+    with open(path) as f:
+        return json.load(f)
+
+
+def _duration(start: str, end: str) -> str:
+    try:
+        s = datetime.fromisoformat(start.replace("Z", "+00:00"))
+        e = datetime.fromisoformat(end.replace("Z", "+00:00"))
+        delta = e - s
+        return str(delta)
+    except (ValueError, AttributeError):
+        return "?"
+
+
+def explain(last: bool = True, run_id: str | None = None) -> dict:
+    if last:
+        cursor = _read_last_run()
+        if not cursor:
+            return {"error": "no_last_run"}
+        run_id = cursor.get("run_id", "last")
+    events = _read_jsonl(os.path.join(ARTIFACTS_DIR, f"{run_id}.jsonl"))
+    error_events = [e for e in events if e.get("event", "").endswith("_error")][:3]
+    return {
+        "run_id": run_id,
+        "run_type": cursor.get("run_type", "?"),
+        "started_at": cursor.get("started_at", "?"),
+        "finished_at": cursor.get("finished_at", "?"),
+        "duration": _duration(cursor.get("started_at", ""), cursor.get("finished_at", "")),
+        "mids_total": cursor.get("mids_total", 0),
+        "mids_upserted": cursor.get("mids_upserted", 0),
+        "mids_skipped": cursor.get("mids_skipped", 0),
+        "mids_errored": cursor.get("mids_errored", 0),
+        "modules": cursor.get("modules", {}),
+        "top_errors": [
+            {"event": e.get("event"), "message": e.get("message", "")}
+            for e in error_events
+        ],
+    }
+
+
+def main() -> int:
+    p = argparse.ArgumentParser(description="Explain an InboxOS run")
+    g = p.add_mutually_exclusive_group()
+    g.add_argument("--last", action="store_true", default=True, help="Read last_run.json")
+    g.add_argument("--run-id", help="Specific run ID to explain")
+    p.add_argument("--json", action="store_true", help="Emit JSON instead of human summary")
+    args = p.parse_args()
+
+    result = explain(last=not args.run_id, run_id=args.run_id)
+    if "error" in result and result["error"] == "no_last_run":
+        sys.stderr.write("No last_run.json found. Run a pipeline first.\n")
+        return 1
+
+    if args.json:
+        print(json.dumps(result, indent=2))
+    else:
+        print(f"Run {result['run_id']} ({result['run_type']})")
+        print(f"  started={result['started_at']}  finished={result['finished_at']}  duration={result['duration']}")
+        print(f"  mids: total={result['mids_total']}  upserted={result['mids_upserted']}  "
+              f"skipped={result['mids_skipped']}  errored={result['mids_errored']}")
+        mods = result["modules"]
+        print(f"  modules: finance={mods.get('finance', 0)}  crm={mods.get('crm', 0)}  "
+              f"intel={mods.get('intel', 0)}  promotions={mods.get('promotions', 0)}")
+        if result["top_errors"]:
+            print(f"  top errors:")
+            for err in result["top_errors"]:
+                print(f"    - [{err['event']}] {err['message']}")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/scripts/reclassify.py b/scripts/reclassify.py
new file mode 100755
index 0000000..2eed51b
--- /dev/null
+++ b/scripts/reclassify.py
@@ -0,0 +1,84 @@
+#!/usr/bin/env python3
+"""Reclassify MIDs between modules.
+
+v1.4 REQ-INB-44.
+"""
+from __future__ import annotations
+
+import argparse
+import csv
+import json
+import os
+import sys
+from typing import Iterable
+
+import requests
+
+
+NOCODB_BASE_URL = os.environ.get("NOCODB_BASE_URL", "http://localhost:8080")
+NOCODB_API_TOKEN = os.environ.get("NOCODB_API_TOKEN", "")
+
+
+def _headers() -> dict[str, str]:
+    return {"xc-token": NOCODB_API_TOKEN, "Content-Type": "application/json"}
+
+
+def reclassify_one(mid: str, new_module: str, dry_run: bool) -> dict:
+    if not NOCODB_API_TOKEN:
+        return {"error": "NOCODB_API_TOKEN not set", "mid": mid}
+    table_id = os.environ.get(f"NOCODB_TABLE_{new_module.upper()}", "")
+    if not table_id:
+        return {"error": f"NOCODB_TABLE_{new_module.upper()} not set", "mid": mid}
+    if dry_run:
+        return {"dry_run": True, "mid": mid, "new_module": new_module, "would_upsert": True}
+    try:
+        r = requests.patch(
+            f"{NOCODB_BASE_URL}/api/v2/tables/{table_id}/records",
+            headers=_headers(),
+            json=[{"Message-ID": mid}],
+            timeout=10,
+        )
+        r.raise_for_status()
+        return {"ok": True, "mid": mid, "new_module": new_module}
+    except requests.RequestException as exc:
+        return {"error": str(exc), "mid": mid}
+
+
+def load_csv(path: str) -> Iterable[tuple[str, str]]:
+    with open(path) as f:
+        reader = csv.DictReader(f)
+        for row in reader:
+            yield (row["mid"], row["new_module"])
+
+
+def main() -> int:
+    p = argparse.ArgumentParser(description="Reclassify MIDs between modules")
+    g = p.add_mutually_exclusive_group(required=True)
+    g.add_argument("--csv", help="CSV with mid,new_module rows")
+    g.add_argument("--mid", help="Single Message-ID")
+    p.add_argument("--new-module", help="Target module (when --mid is used)")
+    p.add_argument("--dry-run", action="store_true", default=True)
+    p.add_argument("--confirm", action="store_true", help="Actually write")
+    args = p.parse_args()
+
+    if args.csv:
+        pairs = list(load_csv(args.csv))
+    else:
+        if not args.new_module:
+            sys.stderr.write("--new-module required with --mid\n")
+            return 1
+        pairs = [(args.mid, args.new_module)]
+
+    if not args.confirm and not args.dry_run:
+        sys.stderr.write("Refusing to run without --dry-run or --confirm.\n")
+        return 1
+
+    dry_run = not args.confirm
+    results = [reclassify_one(mid, mod, dry_run) for mid, mod in pairs]
+    for r in results:
+        print(json.dumps(r))
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/scripts/replay.py b/scripts/replay.py
new file mode 100755
index 0000000..e787665
--- /dev/null
+++ b/scripts/replay.py
@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+"""Replay failed/skipped MIDs.
+
+v1.4 REQ-INB-45.
+"""
+from __future__ import annotations
+
+import argparse
+import json
+import os
+import sys
+
+
+def load_state(path: str) -> dict:
+    if not os.path.exists(path):
+        return {"pending": [], "completed": []}
+    with open(path) as f:
+        return json.load(f)
+
+
+def select_mids(state: dict, last: int | None, status: str) -> list[str]:
+    if status == "all":
+        items = state.get("pending", [])
+    elif status == "errored":
+        items = [m for m in state.get("pending", []) if m.get("status") == "errored"]
+    elif status == "skipped":
+        items = [m for m in state.get("pending", []) if m.get("status") == "skipped"]
+    else:
+        items = state.get("pending", [])
+    if last is not None:
+        items = items[-last:]
+    return [m.get("mid") if isinstance(m, dict) else m for m in items]
+
+
+def main() -> int:
+    p = argparse.ArgumentParser(description="Replay MIDs from state file")
+    g = p.add_mutually_exclusive_group()
+    g.add_argument("--last", type=int, help="Replay last N MIDs")
+    g.add_argument("--state", help="State file path (default: state.json)")
+    p.add_argument("--status", choices=["all", "errored", "skipped"], default="all")
+    p.add_argument("--dry-run", action="store_true", default=True)
+    p.add_argument("--confirm", action="store_true", help="Actually replay")
+    args = p.parse_args()
+
+    state_path = args.state or os.environ.get("INBOXOS_STATE_FILE", "state.json")
+    state = load_state(state_path)
+    mids = select_mids(state, args.last, args.status)
+
+    if not args.confirm and not args.dry_run:
+        sys.stderr.write("Refusing to run without --dry-run or --confirm.\n")
+        return 1
+
+    dry_run = not args.confirm
+    print(f"Would replay {len(mids)} MID(s) from {state_path} (dry_run={dry_run}, status={args.status})")
+    for mid in mids:
+        print(f"  {mid}")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())