Add www/ directory to repository

Landing page, nginx config, analytics scripts, and cost updater
are now tracked in git. update-costs.sh writes to both the live
(/home/claude/www/) and repo copies.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

www/analytics.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+# Simple analytics for llm-impact.org
+# Parses nginx access logs. Run as root or a user with log read access.
+#
+# Usage: ./analytics.sh [days]
+#   days: how many days back to analyze (default: 7)
+
+set -euo pipefail
+
+DAYS="${1:-7}"
+LOG="/var/log/nginx/access.log"
+CUTOFF=$(date -d "$DAYS days ago" +%d/%b/%Y)
+
+if [ ! -r "$LOG" ]; then
+    echo "Error: Cannot read $LOG (run as root or add user to adm group)"
+    exit 1
+fi
+
+echo "=== llm-impact.org analytics (last $DAYS days) ==="
+echo
+
+# Filter to recent entries, exclude assets and known scanners
+recent=$(awk -v cutoff="$CUTOFF" '
+    $4 ~ cutoff || $4 > "["cutoff { print }
+' "$LOG" \
+    | grep -v -E '\.(css|js|ico|png|jpg|svg|woff|ttf|map)' \
+    | grep -v -iE '(bot|crawler|spider|leakix|zgrab|masscan|nmap)' \
+    | grep -v -E '\.(env|php|git|xml|yml|yaml|bak|sql)')
+
+if [ -z "$recent" ]; then
+    echo "No matching requests in the last $DAYS days."
+    exit 0
+fi
+
+# Unique IPs (proxy for unique visitors)
+unique_ips=$(echo "$recent" | awk '{print $1}' | sort -u | wc -l)
+echo "Unique IPs: $unique_ips"
+
+# Total requests (excluding assets)
+total=$(echo "$recent" | wc -l)
+echo "Total page requests: $total"
+
+echo
+echo "=== Top pages ==="
+echo "$recent" | awk '{print $7}' | sort | uniq -c | sort -rn | head -10
+
+echo
+echo "=== Referrers (external) ==="
+# In combined log format: IP - - [date] "request" status size "referer" "ua"
+echo "$recent" | awk -F'"' '{print $4}' | grep -v -E '(^-$|^$|llm-impact\.org)' | sort | uniq -c | sort -rn | head -10
+
+echo
+echo "=== Landing page vs repo ==="
+landing=$(echo "$recent" | awk '$7 == "/" || $7 == "/index.html"' | wc -l)
+forge=$(echo "$recent" | grep '/forge/' | wc -l)
+echo "Landing page: $landing"
+echo "Forge (repo): $forge"