diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..6313b56
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+* text=auto eol=lf
diff --git a/fetch-usage.js b/fetch-usage.js
index d153c50..423b974 100755
--- a/fetch-usage.js
+++ b/fetch-usage.js
@@ -1,106 +1,106 @@
-#!/usr/bin/env node
-/**
- * Claude Usage Fetcher (Standalone)
- *
- * Fetches token usage from claude.ai API using a session key.
- * Designed to run as a cron job on headless servers.
- *
- * Session key source (checked in order):
- *   1. CLAUDE_SESSION_KEY env var
- *   2. ~/.config/claude-statusline/session-key  (plain text file)
- *
- * To get your session key:
- *   1. Log into claude.ai in any browser
- *   2. Open DevTools → Application → Cookies → claude.ai
- *   3. Copy the value of the "sessionKey" cookie
- *   4. Save it: echo "sk-ant-..." > ~/.config/claude-statusline/session-key
- *
- * Output: Writes JSON to $CLAUDE_USAGE_CACHE or /tmp/claude_usage.json
- *
- * Cron example (every 5 min):
- *   */5 * * * * /usr/bin/node /path/to/fetch-usage.js 2>/dev/null
- */
-const fs = require('fs');
-const path = require('path');
-
-// --- Config ---
-const CONFIG_DIR = process.env.CLAUDE_STATUSLINE_CONFIG
-  || path.join(process.env.HOME || '/root', '.config', 'claude-statusline');
-const CACHE_FILE = process.env.CLAUDE_USAGE_CACHE
-  || path.join(process.env.TMPDIR || '/tmp', 'claude_usage.json');
-const ORG_ID = process.env.CLAUDE_ORG_ID || '';
-
-// --- Session Key ---
-function getSessionKey() {
-  // env var first
-  if (process.env.CLAUDE_SESSION_KEY) return process.env.CLAUDE_SESSION_KEY.trim();
-
-  // config file
-  const keyFile = path.join(CONFIG_DIR, 'session-key');
-  try {
-    return fs.readFileSync(keyFile, 'utf8').trim();
-  } catch {
-    return null;
-  }
-}
-
-// --- Discover org ID ---
-async function getOrgId(sessionKey) {
-  if (ORG_ID) return ORG_ID;
-
-  const resp = await fetch('https://claude.ai/api/organizations', {
-    headers: headers(sessionKey),
-    signal: AbortSignal.timeout(10000),
-  });
-  if (!resp.ok) throw new Error('Failed to list orgs: ' + resp.status);
-  const orgs = await resp.json();
-  if (!orgs.length) throw new Error('No organizations found');
-  return orgs[0].uuid;
-}
-
-function headers(sessionKey) {
-  return {
-    'Cookie': 'sessionKey=' + sessionKey,
-    'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0',
-    'Accept': 'application/json',
-    'Referer': 'https://claude.ai/',
-    'Origin': 'https://claude.ai',
-  };
-}
-
-// --- Fetch ---
-async function main() {
-  const sessionKey = getSessionKey();
-  if (!sessionKey) {
-    console.error('No session key found. Set CLAUDE_SESSION_KEY or create ' +
-      path.join(CONFIG_DIR, 'session-key'));
-    process.exit(1);
-  }
-
-  try {
-    const orgId = await getOrgId(sessionKey);
-    const resp = await fetch('https://claude.ai/api/organizations/' + orgId + '/usage', {
-      headers: headers(sessionKey),
-      signal: AbortSignal.timeout(10000),
-    });
-
-    if (!resp.ok) {
-      console.error('API error: ' + resp.status);
-      process.exit(1);
-    }
-
-    const data = await resp.json();
-
-    // Ensure cache dir exists
-    const cacheDir = path.dirname(CACHE_FILE);
-    if (!fs.existsSync(cacheDir)) fs.mkdirSync(cacheDir, { recursive: true });
-
-    fs.writeFileSync(CACHE_FILE, JSON.stringify(data, null, 2));
-    console.log('OK — wrote ' + CACHE_FILE);
-  } catch (e) {
-    console.error('Fetch error: ' + e.message);
-    process.exit(1);
-  }
-}
-
-main();
+#!/usr/bin/env node
+/**
+ * Claude Usage Fetcher (Standalone)
+ *
+ * Fetches token usage from claude.ai API using a session key.
+ * Designed to run as a cron job on headless servers.
+ *
+ * Session key source (checked in order):
+ *   1. CLAUDE_SESSION_KEY env var
+ *   2. ~/.config/claude-statusline/session-key  (plain text file)
+ *
+ * To get your session key:
+ *   1. Log into claude.ai in any browser
+ *   2. Open DevTools → Application → Cookies → claude.ai
+ *   3. Copy the value of the "sessionKey" cookie
+ *   4. Save it: echo "sk-ant-..." > ~/.config/claude-statusline/session-key
+ *
+ * Output: Writes JSON to $CLAUDE_USAGE_CACHE or /tmp/claude_usage.json
+ *
+ * Cron example (every 5 min):
+ *   */5 * * * * /usr/bin/node /path/to/fetch-usage.js 2>/dev/null
+ */
+const fs = require('fs');
+const path = require('path');
+
+// --- Config ---
+const CONFIG_DIR = process.env.CLAUDE_STATUSLINE_CONFIG
+  || path.join(process.env.HOME || '/root', '.config', 'claude-statusline');
+const CACHE_FILE = process.env.CLAUDE_USAGE_CACHE
+  || path.join(process.env.TMPDIR || '/tmp', 'claude_usage.json');
+const ORG_ID = process.env.CLAUDE_ORG_ID || '';
+
+// --- Session Key ---
+function getSessionKey() {
+  // env var first
+  if (process.env.CLAUDE_SESSION_KEY) return process.env.CLAUDE_SESSION_KEY.trim();
+
+  // config file
+  const keyFile = path.join(CONFIG_DIR, 'session-key');
+  try {
+    return fs.readFileSync(keyFile, 'utf8').trim();
+  } catch {
+    return null;
+  }
+}
+
+// --- Discover org ID ---
+async function getOrgId(sessionKey) {
+  if (ORG_ID) return ORG_ID;
+
+  const resp = await fetch('https://claude.ai/api/organizations', {
+    headers: headers(sessionKey),
+    signal: AbortSignal.timeout(10000),
+  });
+  if (!resp.ok) throw new Error('Failed to list orgs: ' + resp.status);
+  const orgs = await resp.json();
+  if (!orgs.length) throw new Error('No organizations found');
+  return orgs[0].uuid;
+}
+
+function headers(sessionKey) {
+  return {
+    'Cookie': 'sessionKey=' + sessionKey,
+    'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0',
+    'Accept': 'application/json',
+    'Referer': 'https://claude.ai/',
+    'Origin': 'https://claude.ai',
+  };
+}
+
+// --- Fetch ---
+async function main() {
+  const sessionKey = getSessionKey();
+  if (!sessionKey) {
+    console.error('No session key found. Set CLAUDE_SESSION_KEY or create ' +
+      path.join(CONFIG_DIR, 'session-key'));
+    process.exit(1);
+  }
+
+  try {
+    const orgId = await getOrgId(sessionKey);
+    const resp = await fetch('https://claude.ai/api/organizations/' + orgId + '/usage', {
+      headers: headers(sessionKey),
+      signal: AbortSignal.timeout(10000),
+    });
+
+    if (!resp.ok) {
+      console.error('API error: ' + resp.status);
+      process.exit(1);
+    }
+
+    const data = await resp.json();
+
+    // Ensure cache dir exists
+    const cacheDir = path.dirname(CACHE_FILE);
+    if (!fs.existsSync(cacheDir)) fs.mkdirSync(cacheDir, { recursive: true });
+
+    fs.writeFileSync(CACHE_FILE, JSON.stringify(data, null, 2));
+    console.log('OK — wrote ' + CACHE_FILE);
+  } catch (e) {
+    console.error('Fetch error: ' + e.message);
+    process.exit(1);
+  }
+}
+
+main();
diff --git a/install.sh b/install.sh
index 090e4a5..117c84d 100755
--- a/install.sh
+++ b/install.sh
@@ -1,73 +1,78 @@
-#!/usr/bin/env bash
-# Install claude-statusline for the current user.
-# Usage: bash install.sh
-set -euo pipefail
-
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
-INSTALL_DIR="${HOME}/.local/share/claude-statusline"
-CONFIG_DIR="${HOME}/.config/claude-statusline"
-CLAUDE_DIR="${HOME}/.claude"
-
-echo "==> Installing claude-statusline..."
-
-# Copy scripts
-mkdir -p "$INSTALL_DIR"
-cp "$SCRIPT_DIR/statusline.js" "$INSTALL_DIR/"
-cp "$SCRIPT_DIR/fetch-usage.js" "$INSTALL_DIR/"
-chmod +x "$INSTALL_DIR"/*.js
-
-# Create config dir
-mkdir -p "$CONFIG_DIR"
-if [ ! -f "$CONFIG_DIR/session-key" ]; then
-    echo "# Paste your claude.ai sessionKey cookie value here" > "$CONFIG_DIR/session-key"
-    chmod 600 "$CONFIG_DIR/session-key"
-    echo "    Created $CONFIG_DIR/session-key (edit with your session key)"
-fi
-
-# Configure Claude Code statusline
-mkdir -p "$CLAUDE_DIR"
-SETTINGS="$CLAUDE_DIR/settings.json"
-NODE_BIN="$(which node 2>/dev/null || echo '/usr/bin/node')"
-
-if [ -f "$SETTINGS" ]; then
-    # Check if statusLine already configured
-    if grep -q '"statusLine"' "$SETTINGS" 2>/dev/null; then
-        echo "    statusLine already configured in $SETTINGS — skipping"
-    else
-        # Insert statusLine before last closing brace
-        TMP=$(mktemp)
-        sed '$ d' "$SETTINGS" > "$TMP"
-        # Add comma if needed
-        if grep -q '[^{]' "$TMP"; then
-            echo ',' >> "$TMP"
-        fi
-        cat >> "$TMP" <<SEOF
-  "statusLine": {
-    "type": "command",
-    "command": "${NODE_BIN} --no-warnings ${INSTALL_DIR}/statusline.js"
-  }
-}
-SEOF
-        mv "$TMP" "$SETTINGS"
-        echo "    Added statusLine to $SETTINGS"
-    fi
-else
-    cat > "$SETTINGS" <<SEOF
-{
-  "statusLine": {
-    "type": "command",
-    "command": "${NODE_BIN} --no-warnings ${INSTALL_DIR}/statusline.js"
-  }
-}
-SEOF
-    echo "    Created $SETTINGS with statusLine config"
-fi
-
-# Offer cron setup
-echo ""
-echo "==> Optional: set up usage fetcher cron (every 5 min):"
-echo "    crontab -e"
-echo "    */5 * * * * ${NODE_BIN} ${INSTALL_DIR}/fetch-usage.js 2>/dev/null"
-echo ""
-echo "==> Done! Restart Claude Code to see the statusline."
-echo "    Don't forget to add your session key to: $CONFIG_DIR/session-key"
+#!/usr/bin/env bash
+# Install claude-statusline for the current user.
+# Usage: bash install.sh
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+INSTALL_DIR="${HOME}/.local/share/claude-statusline"
+CONFIG_DIR="${HOME}/.config/claude-statusline"
+CLAUDE_DIR="${HOME}/.claude"
+
+# --- Check Node.js version (need 18+ for built-in fetch) ---
+NODE_BIN="$(which node 2>/dev/null || echo '')"
+if [ -z "$NODE_BIN" ]; then
+    echo "ERROR: Node.js not found. Install Node.js 18+ first."
+    exit 1
+fi
+NODE_MAJOR=$("$NODE_BIN" -e "process.stdout.write(String(process.versions.node.split('.')[0]))")
+if [ "$NODE_MAJOR" -lt 18 ]; then
+    echo "ERROR: Node.js $("$NODE_BIN" --version) found, but 18+ is required (built-in fetch)."
+    exit 1
+fi
+echo "==> Node.js v${NODE_MAJOR} found at $NODE_BIN"
+
+echo "==> Installing claude-statusline..."
+
+# Copy scripts
+mkdir -p "$INSTALL_DIR"
+cp "$SCRIPT_DIR/statusline.js" "$INSTALL_DIR/"
+cp "$SCRIPT_DIR/fetch-usage.js" "$INSTALL_DIR/"
+chmod +x "$INSTALL_DIR"/*.js
+
+# Create config dir
+mkdir -p "$CONFIG_DIR"
+if [ ! -f "$CONFIG_DIR/session-key" ]; then
+    echo "# Paste your claude.ai sessionKey cookie value here" > "$CONFIG_DIR/session-key"
+    chmod 600 "$CONFIG_DIR/session-key"
+    echo "    Created $CONFIG_DIR/session-key (edit with your session key)"
+fi
+
+# Configure Claude Code statusline
+mkdir -p "$CLAUDE_DIR"
+SETTINGS="$CLAUDE_DIR/settings.json"
+
+if [ -f "$SETTINGS" ]; then
+    if grep -q '"statusLine"' "$SETTINGS" 2>/dev/null; then
+        echo "    statusLine already configured in $SETTINGS — skipping"
+    else
+        "$NODE_BIN" -e "
+const fs = require('fs');
+const settings = JSON.parse(fs.readFileSync('$SETTINGS', 'utf8'));
+settings.statusLine = {
+  type: 'command',
+  command: '$NODE_BIN --no-warnings $INSTALL_DIR/statusline.js'
+};
+fs.writeFileSync('$SETTINGS', JSON.stringify(settings, null, 2) + '\n');
+"
+        echo "    Added statusLine to $SETTINGS"
+    fi
+else
+    cat > "$SETTINGS" <<SEOF
+{
+  "statusLine": {
+    "type": "command",
+    "command": "${NODE_BIN} --no-warnings ${INSTALL_DIR}/statusline.js"
+  }
+}
+SEOF
+    echo "    Created $SETTINGS with statusLine config"
+fi
+
+# Offer cron setup
+echo ""
+echo "==> Optional: set up usage fetcher cron (every 5 min):"
+echo "    crontab -e"
+echo "    */5 * * * * ${NODE_BIN} ${INSTALL_DIR}/fetch-usage.js 2>/dev/null"
+echo ""
+echo "==> Done! Restart Claude Code to see the statusline."
+echo "    Don't forget to add your session key to: $CONFIG_DIR/session-key"
diff --git a/package.json b/package.json
index c22b07f..fc2490f 100644
--- a/package.json
+++ b/package.json
@@ -1,13 +1,13 @@
-{
-  "name": "claude-statusline",
-  "version": "0.1.0",
-  "description": "Standalone Claude Code statusline for headless Linux servers",
-  "main": "statusline.js",
-  "scripts": {
-    "statusline": "node statusline.js",
-    "fetch": "node fetch-usage.js",
-    "install-statusline": "bash install.sh"
-  },
-  "keywords": ["claude", "statusline", "cli"],
-  "license": "MIT"
-}
+{
+  "name": "claude-statusline",
+  "version": "0.1.0",
+  "description": "Standalone Claude Code statusline for headless Linux servers",
+  "main": "statusline.js",
+  "scripts": {
+    "statusline": "node statusline.js",
+    "fetch": "node fetch-usage.js",
+    "install-statusline": "bash install.sh"
+  },
+  "keywords": ["claude", "statusline", "cli"],
+  "license": "MIT"
+}
diff --git a/statusline.js b/statusline.js
index 984b887..2c889f5 100755
--- a/statusline.js
+++ b/statusline.js
@@ -1,92 +1,92 @@
-#!/usr/bin/env node
-/**
- * Claude Code Status Line (Standalone)
- *
- * Designed for headless Linux servers — no browser, no tray app needed.
- *
- * Context window:  Always shown, read from stdin (JSON piped by Claude Code).
- * Token usage:     Optional. Reads from a cache file that can be populated by
- *                  the included fetcher (cron) or any external source.
- *
- * Output: Context ▓▓▓▓░░░░░░ 40% | Token ░░░░░░░░░░ 10% 267M
- */
-const fs = require('fs');
-const path = require('path');
-
-// --- Config ---
-const CACHE_FILE = process.env.CLAUDE_USAGE_CACHE
-  || path.join(process.env.TMPDIR || process.env.TEMP || '/tmp', 'claude_usage.json');
-const CACHE_MAX_AGE_S = parseInt(process.env.CLAUDE_USAGE_MAX_AGE || '900', 10); // 15 min default
-
-// --- Bar renderer ---
-function bar(pct, width) {
-  width = width || 10;
-  const filled = Math.floor(Math.min(100, Math.max(0, pct)) / (100 / width));
-  return '\u2593'.repeat(filled) + '\u2591'.repeat(width - filled);
-}
-
-// --- Context Window ---
-function getContextPart(data) {
-  try {
-    const pct = Math.round(parseFloat(data?.context_window?.used_percentage) || 0);
-    return 'Context ' + bar(pct) + ' ' + pct + '%';
-  } catch {
-    return 'Context ' + '\u2591'.repeat(10);
-  }
-}
-
-// --- Usage Cache ---
-function readCache() {
-  try {
-    if (!fs.existsSync(CACHE_FILE)) return null;
-    const stat = fs.statSync(CACHE_FILE);
-    const ageS = (Date.now() - stat.mtimeMs) / 1000;
-    if (ageS > CACHE_MAX_AGE_S) return null;
-    return JSON.parse(fs.readFileSync(CACHE_FILE, 'utf8'));
-  } catch {
-    return null;
-  }
-}
-
-function formatMinutes(isoStr) {
-  if (!isoStr) return '';
-  try {
-    const remaining = Math.max(0, Math.round((new Date(isoStr).getTime() - Date.now()) / 60000));
-    return remaining + 'M';
-  } catch {
-    return '';
-  }
-}
-
-function getUsagePart(data) {
-  if (!data) return '';
-  const parts = [];
-
-  if (data.five_hour && data.five_hour.utilization > 0) {
-    const pct = Math.round(data.five_hour.utilization);
-    const remaining = formatMinutes(data.five_hour.resets_at);
-    parts.push('Token ' + bar(pct) + ' ' + pct + '%' + (remaining ? ' ' + remaining : ''));
-  }
-
-  if (data.seven_day && data.seven_day.utilization > 20) {
-    const pct = Math.round(data.seven_day.utilization);
-    parts.push('7d ' + pct + '%');
-  }
-
-  return parts.join(' | ');
-}
-
-// --- Main ---
-function main() {
-  let stdinData = {};
-  try {
-    stdinData = JSON.parse(fs.readFileSync(0, 'utf8'));
-  } catch { /* no stdin or invalid JSON */ }
-
-  const ctx = getContextPart(stdinData);
-  const usage = getUsagePart(readCache());
-
-  console.log(usage ? ctx + ' | ' + usage : ctx);
-}
-
-main();
+#!/usr/bin/env node
+/**
+ * Claude Code Status Line (Standalone)
+ *
+ * Designed for headless Linux servers — no browser, no tray app needed.
+ *
+ * Context window:  Always shown, read from stdin (JSON piped by Claude Code).
+ * Token usage:     Optional. Reads from a cache file that can be populated by
+ *                  the included fetcher (cron) or any external source.
+ *
+ * Output: Context ▓▓▓▓░░░░░░ 40% | Token ░░░░░░░░░░ 10% 267M
+ */
+const fs = require('fs');
+const path = require('path');
+
+// --- Config ---
+const CACHE_FILE = process.env.CLAUDE_USAGE_CACHE
+  || path.join(process.env.TMPDIR || process.env.TEMP || '/tmp', 'claude_usage.json');
+const CACHE_MAX_AGE_S = parseInt(process.env.CLAUDE_USAGE_MAX_AGE || '900', 10); // 15 min default
+
+// --- Bar renderer ---
+function bar(pct, width) {
+  width = width || 10;
+  const filled = Math.floor(Math.min(100, Math.max(0, pct)) / (100 / width));
+  return '\u2593'.repeat(filled) + '\u2591'.repeat(width - filled);
+}
+
+// --- Context Window ---
+function getContextPart(data) {
+  try {
+    const pct = Math.round(parseFloat(data?.context_window?.used_percentage) || 0);
+    return 'Context ' + bar(pct) + ' ' + pct + '%';
+  } catch {
+    return 'Context ' + '\u2591'.repeat(10);
+  }
+}
+
+// --- Usage Cache ---
+function readCache() {
+  try {
+    if (!fs.existsSync(CACHE_FILE)) return null;
+    const stat = fs.statSync(CACHE_FILE);
+    const ageS = (Date.now() - stat.mtimeMs) / 1000;
+    if (ageS > CACHE_MAX_AGE_S) return null;
+    return JSON.parse(fs.readFileSync(CACHE_FILE, 'utf8'));
+  } catch {
+    return null;
+  }
+}
+
+function formatMinutes(isoStr) {
+  if (!isoStr) return '';
+  try {
+    const remaining = Math.max(0, Math.round((new Date(isoStr).getTime() - Date.now()) / 60000));
+    return remaining + 'M';
+  } catch {
+    return '';
+  }
+}
+
+function getUsagePart(data) {
+  if (!data) return '';
+  const parts = [];
+
+  if (data.five_hour && data.five_hour.utilization > 0) {
+    const pct = Math.round(data.five_hour.utilization);
+    const remaining = formatMinutes(data.five_hour.resets_at);
+    parts.push('Token ' + bar(pct) + ' ' + pct + '%' + (remaining ? ' ' + remaining : ''));
+  }
+
+  if (data.seven_day && data.seven_day.utilization > 20) {
+    const pct = Math.round(data.seven_day.utilization);
+    parts.push('7d ' + pct + '%');
+  }
+
+  return parts.join(' | ');
+}
+
+// --- Main ---
+function main() {
+  let stdinData = {};
+  try {
+    stdinData = JSON.parse(fs.readFileSync(0, 'utf8'));
+  } catch { /* no stdin or invalid JSON */ }
+
+  const ctx = getContextPart(stdinData);
+  const usage = getUsagePart(readCache());
+
+  console.log(usage ? ctx + ' | ' + usage : ctx);
+}
+
+main();