feat: complete CDN elimination + SVG icon build pipeline

CDN cleanup:
- entry.html.twig: remove PhotoSwipe CDN + duplicate JS (main.js handles it)
- dailies.html.twig: remove PhotoSwipe CDN + duplicate JS
- home.html.twig: remove PhotoSwipe CDN + MapLibre CDN + maplibre-utils.js
  script tags; add {% block map_assets %} to register map bundle

SVG build pipeline:
- Add lucide-static devDependency; gen-weather-icons.js reads icon SVGs
  from node_modules and emits templates/partials/weather-icons.html.twig
- package.json build script now runs gen-weather-icons.js before esbuild
- entry-journal.html.twig includes generated partial instead of hardcoded map
- Rebuild: main.js 83.7kb, map.js 860.7kb, all fonts; zero CDN requests remain

themes/intotheeast/scripts/gen-weather-icons.js

@@ -0,0 +1,47 @@
+#!/usr/bin/env node
+'use strict';
+const fs   = require('fs');
+const path = require('path');
+
+const iconMap = {
+    'sunny':         'sun',
+    'partly cloudy': 'cloud-sun',
+    'cloudy':        'cloud',
+    'foggy':         'cloud-fog',
+    'drizzle':       'cloud-drizzle',
+    'rain':          'cloud-rain',
+    'snow':          'cloud-snow',
+    'thunderstorm':  'cloud-lightning'
+};
+
+const wrapAttrs = 'width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"';
+
+function buildSvg(iconName) {
+    const src  = path.resolve(__dirname, '..', 'node_modules', 'lucide-static', 'icons', iconName + '.svg');
+    const raw  = fs.readFileSync(src, 'utf8');
+    const inner = raw
+        .replace(/^[\s\S]*?<svg[^>]*>/, '')
+        .replace(/<\/svg>[\s\S]*$/, '')
+        .replace(/\s+/g, ' ')
+        .trim();
+    return `<svg ${wrapAttrs}>${inner}</svg>`;
+}
+
+const entries = Object.entries(iconMap);
+const lines   = entries.map(([condition, iconName], i) => {
+    const svg   = buildSvg(iconName).replace(/'/g, "\\'");
+    const pad   = ' '.repeat(Math.max(0, 16 - condition.length));
+    const comma = i < entries.length - 1 ? ',' : '';
+    return `    '${condition}':${pad}'${svg}'${comma}`;
+});
+
+const twig = [
+    '{# Auto-generated by scripts/gen-weather-icons.js — do not edit directly #}',
+    '{% set weather_icons = {',
+    ...lines,
+    '} %}'
+].join('\n') + '\n';
+
+const dest = path.resolve(__dirname, '..', 'templates', 'partials', 'weather-icons.html.twig');
+fs.writeFileSync(dest, twig);
+console.log('Generated ' + path.relative(path.resolve(__dirname, '..'), dest));