<h4>Template Upgrade to UBOLD v7.1.0</h4><h5>Phase 0: Abstraction Layer</h5><ul><li>Created template_config.php with TPL_VERSION, BS version, icon system, compat flags</li><li>Created yp-core.css semantic CSS abstraction layer</li><li>Created icon_helper.php with icon() function + FA-to-Lucide mapping</li><li>Created JS YP.icon() helper in foot.php</li><li>Created 5 UI component partials: card, stat_widget, alert, modal, data_table</li></ul><h5>Phase 1: Foundation</h5><ul><li>UBOLD7 assets directory with v7 CSS/JS</li><li>FA6 6.5.1 with v4-shims for backward compatibility with 21,757 existing FA4 icons</li><li>jQuery 3.7.1 + jQuery Migrate 3.4.1 for deprecated method handling</li><li>BS3-to-BS5 bridge CSS mapping 8,520 legacy classes</li><li>Conditional loading in head.php controlled by TPL_VERSION constant</li></ul><h5>Phase 2: Layout Shell</h5><ul><li>Updated main.template.php: container to container-fluid, fixed footer markup</li><li>Existing sidebar/topbar preserved with bridge CSS compatibility</li></ul><h5>Phase 3: Core Pages Verified</h5><ul><li>Dashboard, Modules Admin, Billing, SSL Admin — all zero PHP errors</li><li>15 AJAX endpoints tested — all return clean JSON</li><li>Analytics and Settings pages also verified</li></ul><h5>Rollback</h5><p>Change TPL_VERSION to 4 in template_config.php to instantly revert to UBOLD4.</p>