feat: CSV generation scripts, API filter params, enriched CSV stubs

- scripts/generate_bot_ip.py: download Tor exit nodes + curate scanner IPs (1353 entries)
- scripts/generate_bot_ja4.py: 31 bot JA4 fingerprints across 16 families
- scripts/generate_asn_data.py: 38 ASNs + 96 IP-to-ASN prefixes
- scripts/update-csv-data.sh: master orchestrator with --install-stubs
- api.py: add asn_org/country_code/ja4/bot_name filters on detections+scores
- pages.py: add /network route
- csv-stubs: enriched with generated data (Tor nodes, scanner IPs, etc.)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

scripts/update-csv-data.sh

@@ -0,0 +1,67 @@
+#!/usr/bin/env bash
+# update-csv-data.sh — Download and generate all CSV reference data for JA4 platform.
+#
+# Outputs:
+#   data/bot_ip.csv           — Known bot/scanner IPs + Tor exit nodes
+#   data/bot_ja4.csv          — Known bot JA4 TLS fingerprints
+#   data/asn_reputation.csv   — ASN→label mapping (human/datacenter/hosting)
+#   data/iplocate-ip-to-asn.csv — CIDR→ASN for dictionary lookup
+#
+# Usage:
+#   ./scripts/update-csv-data.sh                 # generate all
+#   ./scripts/update-csv-data.sh --install-stubs  # also copy to test csv-stubs
+#
+# Requirements: curl, python3 (stdlib only)
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+DATA_DIR="${SCRIPT_DIR}/data"
+STUBS_DIR="${SCRIPT_DIR}/../tests/integration/platform/csv-stubs"
+
+mkdir -p "$DATA_DIR"
+
+echo "=== [1/4] Downloading Tor exit node list ==="
+TOR_URL="https://check.torproject.org/torbulkexitlist"
+TOR_TMP="${DATA_DIR}/tor_exit_nodes.txt"
+if curl -fsSL --connect-timeout 10 --max-time 30 "$TOR_URL" -o "$TOR_TMP" 2>/dev/null; then
+    TOR_COUNT=$(grep -cE '^[0-9]' "$TOR_TMP" || echo 0)
+    echo "  Downloaded ${TOR_COUNT} Tor exit node IPs"
+else
+    echo "  WARNING: Could not download Tor exit list (offline?), using fallback"
+    TOR_TMP=""
+fi
+
+echo "=== [2/4] Generating bot_ip.csv ==="
+python3 "${SCRIPT_DIR}/generate_bot_ip.py" \
+    --output "${DATA_DIR}/bot_ip.csv" \
+    ${TOR_TMP:+--tor-file "$TOR_TMP"}
+echo "  $(wc -l < "${DATA_DIR}/bot_ip.csv") entries"
+
+echo "=== [3/4] Generating bot_ja4.csv ==="
+python3 "${SCRIPT_DIR}/generate_bot_ja4.py" \
+    --output "${DATA_DIR}/bot_ja4.csv"
+echo "  $(wc -l < "${DATA_DIR}/bot_ja4.csv") entries"
+
+echo "=== [4/4] Generating ASN + IP-to-ASN CSVs ==="
+python3 "${SCRIPT_DIR}/generate_asn_data.py" \
+    --output-asn "${DATA_DIR}/asn_reputation.csv" \
+    --output-ipasn "${DATA_DIR}/iplocate-ip-to-asn.csv"
+echo "  ASN reputation: $(wc -l < "${DATA_DIR}/asn_reputation.csv") entries"
+echo "  IP-to-ASN:      $(wc -l < "${DATA_DIR}/iplocate-ip-to-asn.csv") entries"
+
+# Optionally install into test stubs
+if [[ "${1:-}" == "--install-stubs" ]]; then
+    echo ""
+    echo "=== Installing to test csv-stubs ==="
+    cp -v "${DATA_DIR}/bot_ip.csv"              "$STUBS_DIR/"
+    cp -v "${DATA_DIR}/bot_ja4.csv"             "$STUBS_DIR/"
+    cp -v "${DATA_DIR}/asn_reputation.csv"      "$STUBS_DIR/"
+    cp -v "${DATA_DIR}/iplocate-ip-to-asn.csv"  "$STUBS_DIR/"
+    echo "Done."
+fi
+
+# Cleanup
+rm -f "${DATA_DIR}/tor_exit_nodes.txt"
+
+echo ""
+echo "All CSV data generated in ${DATA_DIR}/"
+echo "Run with --install-stubs to copy to test fixtures."