diff --git a/demo/sanitize-repro-bundle.sh b/demo/sanitize-repro-bundle.sh
new file mode 100755
index 0000000..a1834b9
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+++ b/demo/sanitize-repro-bundle.sh
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+set -u
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+OUT_DIR="${TMPDIR:-/tmp}/logveil-demo"
+MARKDOWN_OUT="$OUT_DIR/repro-safe.md"
+JSON_OUT="$OUT_DIR/evidence.json"
+AUDIT_OUT="$OUT_DIR/audit.json"
+
+mkdir -p "$OUT_DIR"
+cd "$ROOT_DIR"
+
+npm run build
+
+node dist/cli.js redact examples/agent-session.log \
+  --out "$MARKDOWN_OUT" \
+  --json-out "$JSON_OUT"
+
+node dist/cli.js audit examples/agent-session.log \
+  --format json \
+  --fail-on none > "$AUDIT_OUT"
+
+test -s "$MARKDOWN_OUT"
+test -s "$JSON_OUT"
+test -s "$AUDIT_OUT"
+grep -q "REDACTED" "$MARKDOWN_OUT"
+grep -q "findings" "$AUDIT_OUT"
+
+echo "Markdown repro bundle: $MARKDOWN_OUT"
+echo "JSON evidence: $JSON_OUT"
+echo "Audit report: $AUDIT_OUT"
diff --git a/docs/promo/repro-bundle-video-brief.md b/docs/promo/repro-bundle-video-brief.md
new file mode 100644
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+++ b/docs/promo/repro-bundle-video-brief.md
@@ -0,0 +1,25 @@
+# Short Video Brief: Sanitized Repro Bundle
+
+## Angle
+
+Show the handoff moment after an agent run fails: the log has useful evidence,
+but it also contains paths, email addresses, or token-shaped strings.
+
+## Demo beats
+
+1. Open `examples/agent-session.log` and point out that it is a local fixture.
+2. Run `bash demo/sanitize-repro-bundle.sh`.
+3. Open `/tmp/logveil-demo/repro-safe.md` and show masked values.
+4. Open `/tmp/logveil-demo/audit.json` to show automation-friendly findings.
+5. Mention that source files are never mutated.
+
+## What to say plainly
+
+LogVeil is a local deterministic sanitizer for reviewable repro bundles. It is
+not a complete DLP system, so sanitized output still deserves human review
+before publishing.
+
+## Caption draft
+
+Agent failure logs can be useful and sensitive at the same time. LogVeil turns a
+local session log into a masked repro bundle plus JSON evidence.
diff --git a/docs/tutorials/sanitize-repro-bundle.md b/docs/tutorials/sanitize-repro-bundle.md
new file mode 100644
index 0000000..97f926d
--- /dev/null
+++ b/docs/tutorials/sanitize-repro-bundle.md
@@ -0,0 +1,28 @@
+# Sanitize a Repro Bundle
+
+This tutorial shows the smallest local workflow for turning an agent session log
+into shareable Markdown plus machine-readable evidence.
+
+## Run it
+
+```sh
+bash demo/sanitize-repro-bundle.sh
+```
+
+The script builds the CLI, redacts `examples/agent-session.log`, writes a
+Markdown repro bundle, writes JSON evidence, and runs an audit report with
+`--fail-on none`.
+
+## Outputs
+
+The generated files are written under `/tmp/logveil-demo`:
+
+- `repro-safe.md`: Markdown bundle with masked evidence.
+- `evidence.json`: structured redaction evidence.
+- `audit.json`: audit report for automation.
+
+## Review checklist
+
+Before publishing a repro bundle, check that the Markdown output has the
+expected context, verify that sensitive values are masked, and keep the original
+log private.