Add watchlist system and pre-market trading reports

New Features:
- Watchlist system for tracking specific Congress members
- Trading report generation with multiple formats
- Pre-market-close automated updates (3 PM)

New Scripts:
- scripts/fetch_congress_members.py: Manage watchlist
  * 29 known active traders (curated list)
  * Optional ProPublica API integration (all 535 members)
  * Create/view/manage watchlist

- scripts/generate_trading_report.py: Generate trading reports
  * Filter by watchlist or show all
  * Multiple formats: text, HTML, JSON
  * Summary statistics (buys/sells, top tickers)
  * Color-coded output (🟢 BUY, 🔴 SELL)

- scripts/pre_market_close_update.sh: 3 PM automation
  * Quick fetch of latest trades
  * Enrichment of new securities
  * Generate and display report
  * Saves to reports/ directory

Documentation:
- WATCHLIST_GUIDE.md: Complete guide
  * List of 29 known active traders
  * How to create/customize watchlist
  * Schedule options (pre-market, post-market)
  * Email setup (optional)
  * FAQ and examples

Known Active Traders Include:
Senate: Tuberville, Rand Paul, Mark Warner, Rick Scott
House: Pelosi, Crenshaw, MTG, Gottheimer, Brian Higgins

Use Cases:
✅ Daily reports at 3 PM (1 hour before close)
✅ See what Congress bought/sold recently
✅ Track specific members you care about
✅ Export to HTML/JSON for further analysis

scripts/pre_market_close_update.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+# Pre-Market-Close POTE Update
+# Run at 3 PM ET (1 hour before market close)
+# Fetches latest disclosures and generates actionable report
+
+set -e
+
+# --- Configuration ---
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
+LOG_DIR="${PROJECT_DIR}/logs"
+REPORT_DIR="${PROJECT_DIR}/reports"
+LOG_FILE="${LOG_DIR}/pre_market_$(date +%Y%m%d).log"
+REPORT_FILE="${REPORT_DIR}/trading_report_$(date +%Y%m%d).txt"
+
+# Ensure directories exist
+mkdir -p "$LOG_DIR" "$REPORT_DIR"
+
+# Redirect output to log
+exec > >(tee -a "$LOG_FILE") 2>&1
+
+echo "=========================================="
+echo "  POTE Pre-Market-Close Update"
+echo "  $(date)"
+echo "  Running 1 hour before market close"
+echo "=========================================="
+
+# Activate virtual environment
+cd "$PROJECT_DIR"
+source venv/bin/activate
+
+# --- Step 1: Quick Fetch of New Trades ---
+echo ""
+echo "--- Fetching Latest Congressional Trades ---"
+python scripts/fetch_congressional_trades.py --days 3
+FETCH_EXIT=$?
+
+if [ $FETCH_EXIT -ne 0 ]; then
+    echo "⚠️  WARNING: Failed to fetch trades (API may be down)"
+    echo "   Generating report from existing data..."
+fi
+
+# --- Step 2: Quick Security Enrichment ---
+echo ""
+echo "--- Enriching New Securities ---"
+python scripts/enrich_securities.py --limit 10
+ENRICH_EXIT=$?
+
+# --- Step 3: Generate Trading Report ---
+echo ""
+echo "--- Generating Trading Report ---"
+python scripts/generate_trading_report.py \
+    --days 7 \
+    --watchlist-only \
+    --format text \
+    --output "$REPORT_FILE"
+
+REPORT_EXIT=$?
+
+if [ $REPORT_EXIT -eq 0 ]; then
+    echo "✅ Report saved to: $REPORT_FILE"
+    echo ""
+    echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+    echo "📊 REPORT PREVIEW"
+    echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+    cat "$REPORT_FILE"
+    echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+else
+    echo "❌ Failed to generate report"
+fi
+
+# --- Step 4: Optional Price Update (Quick) ---
+# Uncomment if you want prices updated before market close
+# echo ""
+# echo "--- Quick Price Update ---"
+# python scripts/fetch_sample_prices.py --days 5
+
+echo ""
+echo "=========================================="
+echo "  Update Complete - $(date)"
+echo "=========================================="
+
+# Exit successfully even if some steps warned
+exit 0
+