feat(ui): refresh auth, entry, admin, and secondary pages

Apply the new design-system primitives across the remaining pages so the
whole app shares one visual language:

- Auth/entry: redesigned index, login, register (centered card layout,
  SVG icons, semantic tokens)
- Admin: sidebar nav with icons, cohesive admin dashboard/users/library/
  processing-issues/settings (tables use border-line + hover states;
  scan/websocket attributes preserved)
- Secondary: analytics (stat cards), devices, progress, conflicts, queue,
  profile + form/modal all migrated to .card/.btn/.input primitives and
  SVG action icons
- Docs + API explorer + setup wizard + collection/rules/modals +
  unlinked books + book-detail modals: consistent chrome, modal scrims
  use --surface-overlay, close buttons use icon-btn
- reader.templ and error.templ intentionally left unchanged

templates/admin_templ.go

@@ -37,7 +37,7 @@ func Admin(user User) templ.Component {
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 2, "<div class=\"flex min-h-screen\" style=\"background-color: var(--bg-primary)\">")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 2, "<div class=\"flex min-h-screen bg-surface\">")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -45,7 +45,47 @@ func Admin(user User) templ.Component {
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 3, "<main class=\"flex-1 p-8\"><div class=\"max-w-4xl\"><div class=\"mb-8\"><h1 class=\"text-3xl font-bold mb-2\" style=\"color: var(--text-primary)\">Dashboard</h1><p style=\"color: var(--text-secondary)\">Overview of your Bookhoard library and settings</p></div><div class=\"grid grid-cols-1 md:grid-cols-2 gap-6 mb-8\"><div class=\"card p-6 rounded-lg border\" style=\"background-color: var(--bg-secondary); border-color: var(--border)\"><div class=\"flex items-center space-x-3\"><div class=\"text-3xl\">📖</div><div><h3 class=\"font-semibold\" style=\"color: var(--text-primary)\">Library</h3><p style=\"color: var(--text-secondary)\" class=\"text-sm\">Manage your ebook collection</p></div></div><a href=\"/\" class=\"mt-4 inline-block text-sm btn-secondary px-3 py-1 rounded\">View Library</a></div><div class=\"card p-6 rounded-lg border\" style=\"background-color: var(--bg-secondary); border-color: var(--border)\"><div class=\"flex items-center space-x-3\"><div class=\"text-3xl\">👁️</div><div><h3 class=\"font-semibold\" style=\"color: var(--text-primary)\">Scan Watch Status</h3><p style=\"color: var(--text-secondary)\" class=\"text-sm\">Auto-detecting new files</p></div></div><div id=\"watch-status\" class=\"mt-4 text-sm\" style=\"color: var(--text-secondary)\"><span class=\"inline-block w-2 h-2 rounded-full bg-green-500 mr-2\"></span> Watching <span id=\"watch-count\">0</span> libraries</div></div></div><div class=\"card p-6 rounded-lg border\" style=\"background-color: var(--bg-secondary); border-color: var(--border)\"><h3 class=\"text-xl font-semibold mb-4\" style=\"color: var(--text-primary)\">Quick Actions</h3><div class=\"grid grid-cols-1 sm:grid-cols-2 gap-4\"><button @click=\"scanAllLibraries()\" class=\"btn-primary p-4 rounded-lg text-left\"><div class=\"font-medium\">Rescan Library</div><div style=\"color: var(--text-secondary)\" class=\"text-sm\">Re-scan existing files and fix metadata</div></button> <a href=\"/admin/library\" class=\"btn-secondary p-4 rounded-lg text-left block\"><div class=\"font-medium\">Manage Libraries and Folders</div><div style=\"color: var(--text-secondary)\" class=\"text-sm\">Add or remove libraries and scan directories</div></a></div></div><!-- Scan Progress Section --><div id=\"scan-progress-container\" class=\"hidden mt-6 p-6 rounded-lg border opacity-0 -translate-y-2.5 transition-all duration-300 ease-out\" style=\"background-color: var(--bg-secondary); border-color: var(--border);\"><div class=\"flex justify-between items-center mb-4\"><h3 class=\"text-lg font-semibold\" style=\"color: var(--text-primary)\">📚 Scanning Libraries</h3><button @click=\"hideScanProgress()\" class=\"p-2 hover:bg-gray-700 rounded\">✕</button></div><!-- Overall Progress --><div class=\"mb-4\"><div class=\"flex justify-between text-sm mb-2\"><span style=\"color: var(--text-secondary)\">Overall Progress</span> <span id=\"scan-progress-text\" style=\"color: var(--text-primary)\">0%</span></div><div class=\"w-full bg-gray-700 rounded-full h-3\"><div id=\"scan-progress-bar\" class=\"h-3 rounded-full transition-all duration-500\" style=\"width: 0%; background-color: var(--accent);\"></div></div><div id=\"scan-status\" class=\"text-sm mt-2\" style=\"color: var(--text-secondary)\">Starting scan...</div></div><!-- Per-Library Progress --><div id=\"library-progress-list\" class=\"space-y-3\"><!-- Dynamically populated --></div><!-- Results Summary --><div id=\"scan-results\" class=\"hidden mt-6 p-4 rounded-lg border\" style=\"background-color: var(--bg-primary); border-color: var(--border);\"><h4 class=\"font-semibold mb-2\" style=\"color: var(--text-primary)\">✅ Scan Complete!</h4><div id=\"scan-results-content\" style=\"color: var(--text-secondary)\"><!-- Results populated by JS --></div><div class=\"mt-4 flex gap-2\"><button @click=\"window.location.reload()\" class=\"btn-primary px-4 py-2 rounded-lg\">Refresh to View Books</button> <button @click=\"hideScanProgress()\" class=\"btn-secondary px-4 py-2 rounded-lg\">Dismiss</button></div></div></div></div></main></div></body></html>")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 3, "<main class=\"flex-1 p-6 sm:p-8\"><div class=\"max-w-4xl\"><div class=\"mb-8\"><h1 class=\"text-2xl font-bold tracking-tight text-content mb-2\">Dashboard</h1><p class=\"text-content-muted\">Overview of your Bookhoard library and settings</p></div><div class=\"grid grid-cols-1 md:grid-cols-2 gap-6 mb-8\"><div class=\"card p-6\"><div class=\"flex items-center space-x-3\"><div class=\"text-content-muted\">")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = Icon("library", "h-7 w-7").Render(ctx, templ_7745c5c3_Buffer)
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 4, "</div><div><h3 class=\"font-semibold text-content\">Library</h3><p class=\"text-content-muted text-sm\">Manage your ebook collection</p></div></div><a href=\"/\" class=\"btn btn-secondary mt-4 text-sm\">View Library</a></div><div class=\"card p-6\"><div class=\"flex items-center space-x-3\"><div class=\"text-content-muted\">")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = Icon("sync", "h-7 w-7").Render(ctx, templ_7745c5c3_Buffer)
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 5, "</div><div><h3 class=\"font-semibold text-content\">Scan Watch Status</h3><p class=\"text-content-muted text-sm\">Auto-detecting new files</p></div></div><div id=\"watch-status\" class=\"mt-4 text-sm text-content-muted\"><span class=\"inline-block w-2 h-2 rounded-full bg-green-500 mr-2\"></span> Watching <span id=\"watch-count\">0</span> libraries</div></div></div><div class=\"card p-6\"><h3 class=\"text-xl font-semibold mb-4 text-content\">Quick Actions</h3><div class=\"grid grid-cols-1 sm:grid-cols-2 gap-4\"><button @click=\"scanAllLibraries()\" class=\"btn btn-primary p-4 text-left\"><div class=\"font-medium\">Rescan Library</div><div class=\"text-content-muted text-sm\">Re-scan existing files and fix metadata</div></button> <a href=\"/admin/library\" class=\"btn btn-secondary p-4 text-left block\"><div class=\"font-medium\">Manage Libraries and Folders</div><div class=\"text-content-muted text-sm\">Add or remove libraries and scan directories</div></a></div></div><!-- Scan Progress Section --><div id=\"scan-progress-container\" class=\"card mt-6 opacity-0 -translate-y-2.5 transition-all duration-300 ease-out\"><div class=\"flex justify-between items-center mb-4\"><h3 class=\"text-lg font-semibold text-content flex items-center gap-2\">")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = Icon("library", "h-5 w-5").Render(ctx, templ_7745c5c3_Buffer)
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 6, "Scanning Libraries</h3><button @click=\"hideScanProgress()\" class=\"p-2 hover:bg-surface-hover rounded\">")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = Icon("close", "h-4 w-4").Render(ctx, templ_7745c5c3_Buffer)
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 7, "</button></div><!-- Overall Progress --><div class=\"mb-4\"><div class=\"flex justify-between text-sm mb-2\"><span class=\"text-content-muted\">Overall Progress</span> <span id=\"scan-progress-text\" class=\"text-content\">0%</span></div><div class=\"w-full bg-surface-hover rounded-full h-3\"><div id=\"scan-progress-bar\" class=\"h-3 rounded-full transition-all duration-500 bg-brand\" style=\"width: 0%;\"></div></div><div id=\"scan-status\" class=\"text-sm mt-2 text-content-muted\">Starting scan...</div></div><!-- Per-Library Progress --><div id=\"library-progress-list\" class=\"space-y-3\"><!-- Dynamically populated --></div><!-- Results Summary --><div id=\"scan-results\" class=\"hidden mt-6 p-4 rounded-lg border border-line bg-surface\"><h4 class=\"font-semibold mb-2 text-content flex items-center gap-2\">")
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = Icon("check-circle", "h-4 w-4").Render(ctx, templ_7745c5c3_Buffer)
+		if templ_7745c5c3_Err != nil {
+			return templ_7745c5c3_Err
+		}
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 8, "Scan Complete!</h4><div id=\"scan-results-content\" class=\"text-content-muted\"><!-- Results populated by JS --></div><div class=\"mt-4 flex gap-2\"><button @click=\"window.location.reload()\" class=\"btn btn-primary\">Refresh to View Books</button> <button @click=\"hideScanProgress()\" class=\"btn btn-secondary\">Dismiss</button></div></div></div></div></main></div></body></html>")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}