fix(podcasts+ui): user-test round 3 — five browser-reported defects

1. Add-modal 'Download order' never revealed: the CSS sibling selector
   (#podcast-download-all:checked ~ .podcast-add-order) can't fire —
   the checkbox was nested inside a wrapper div, so the select row was
   no SIBLING of the input. Restructured: input, label, and order row
   are now siblings under one flex-wrap wrapper.

2. Order + auto-download dropdowns always displayed the LAST option
   ('Newest first'/'Newest') regardless of the saved value: templ's
   selected={ boolExpr } compiles to selected="false" — and the mere
   PRESENCE of the attribute selects the option, so every option was
   selected and the browser honored the last. Sweep to the boolean-
   attribute form selected?={...} (omits on false) across
   podcast_detail (14), book_detail_modals (10: manga type/reading
   direction selects + abridged/explicit checkboxes — same defect,
   always-checked), collection_modal (2: hide-finished/show-up-next
   always-checked). Values were SAVING correctly all along; this was
   pure display. audio_reader/collections :selected/:checked are
   Alpine bindings — unaffected.

3. Remove Feed (and every hx-confirm) still showed the browser dialog
   for signed-in users: the global confirm modal rendered at the end
   of SidebarSignIn — signed-IN pages have no SidebarSignIn, so no
   #confirm-modal existed and confirmDialog() degraded to
   window.confirm. Moved the modal into Header proper (rendered on
   every page, after </aside>).

4. Facet bar at scale: values now carry feed COUNTS, sort by frequency
   DESC then alphabetically, cap at 6 chips per group flat, and the
   rest collapse into a native <details> '+N more' expander — hundreds
   of hosts/tags degrade gracefully instead of a wall of chips.

Verified live on the dev instance (order select reflects the saved
override, override row persists, reveal fires, modal renders on
signed-in pages). Podcast + logout + media-pin suites green; vitest
167 green.

templates/header_templ.go

@@ -741,7 +741,7 @@ func Header(user User, currentPath string) templ.Component {
 				return templ_7745c5c3_Err
 			}
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 73, "</div></aside><!-- Topbar --><header class=\"app-topbar\"><div class=\"flex items-center gap-3 px-4 sm:px-6 h-full\"><button type=\"button\" class=\"app-mobile-only icon-btn\" @click=\"mobileMenuOpen = true\" aria-label=\"Open menu\">")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 73, "</div></aside><!-- Global confirm modal (issue #5): ONE styled dialog answers every\n\t\t     hx-confirm sitewide via the htmx:confirm interceptor in\n\t\t     web/src/confirm.ts, and exposes the confirmDialog() promise for\n\t\t     legacy JS call sites. Inert until shown. MUST render on every\n\t\t     page (it previously lived inside SidebarSignIn — signed-in\n\t\t     pages had no #confirm-modal, so confirmDialog degraded to the\n\t\t     native window.confirm; fixed 2026-10-30, user report). --><div id=\"confirm-modal\" class=\"hidden fixed inset-0 z-[60] flex items-center justify-center p-4\" style=\"background-color: var(--surface-overlay);\"><div class=\"card w-full max-w-sm\" style=\"box-shadow: var(--shadow-pop);\"><div class=\"p-5 border-b\" style=\"border-color: var(--border);\"><p id=\"confirm-modal-message\" class=\"text-sm font-medium\" style=\"color: var(--text-primary)\"></p></div><div class=\"p-4 flex justify-end gap-2\"><button id=\"confirm-modal-cancel\" class=\"btn btn-secondary\">Cancel</button> <button id=\"confirm-modal-accept\" class=\"btn btn-primary\">Confirm</button></div></div></div><!-- Topbar --><header class=\"app-topbar\"><div class=\"flex items-center gap-3 px-4 sm:px-6 h-full\"><button type=\"button\" class=\"app-mobile-only icon-btn\" @click=\"mobileMenuOpen = true\" aria-label=\"Open menu\">")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}
@@ -764,7 +764,7 @@ func Header(user User, currentPath string) templ.Component {
 		var templ_7745c5c3_Var44 string
 		templ_7745c5c3_Var44, templ_7745c5c3_Err = templ.ResolveAttributeValue("/static/main.js?v=" + MainJSVersion())
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `templates/header.templ`, Line: 278, Col: 68}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `templates/header.templ`, Line: 300, Col: 68}
 		}
 		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var44)
 		if templ_7745c5c3_Err != nil {
@@ -815,7 +815,7 @@ func SidebarUserMenu(user User) templ.Component {
 		var templ_7745c5c3_Var46 string
 		templ_7745c5c3_Var46, templ_7745c5c3_Err = templ.JoinStringErrs(user.Username)
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `templates/header.templ`, Line: 294, Col: 58}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `templates/header.templ`, Line: 316, Col: 58}
 		}
 		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var46))
 		if templ_7745c5c3_Err != nil {
@@ -899,7 +899,7 @@ func SidebarSignIn(currentPath string) templ.Component {
 		var templ_7745c5c3_Var48 string
 		templ_7745c5c3_Var48, templ_7745c5c3_Err = templ.ResolveAttributeValue(currentPath)
 		if templ_7745c5c3_Err != nil {
-			return templ.Error{Err: templ_7745c5c3_Err, FileName: `templates/header.templ`, Line: 342, Col: 60}
+			return templ.Error{Err: templ_7745c5c3_Err, FileName: `templates/header.templ`, Line: 364, Col: 60}
 		}
 		_, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var48)
 		if templ_7745c5c3_Err != nil {
@@ -915,7 +915,7 @@ func SidebarSignIn(currentPath string) templ.Component {
 				return templ_7745c5c3_Err
 			}
 		}
-		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 88, "</div></div><!-- Global confirm modal (issue #5): ONE styled dialog answers every\n\t     hx-confirm sitewide via the htmx:confirm interceptor in\n\t     web/src/confirm.ts, and exposes the confirmDialog() promise for\n\t     legacy JS call sites. Inert until shown. --><div id=\"confirm-modal\" class=\"hidden fixed inset-0 z-[60] flex items-center justify-center p-4\" style=\"background-color: var(--surface-overlay);\"><div class=\"card w-full max-w-sm\" style=\"box-shadow: var(--shadow-pop);\"><div class=\"p-5 border-b\" style=\"border-color: var(--border);\"><p id=\"confirm-modal-message\" class=\"text-sm font-medium\" style=\"color: var(--text-primary)\"></p></div><div class=\"p-4 flex justify-end gap-2\"><button id=\"confirm-modal-cancel\" class=\"btn btn-secondary\">Cancel</button> <button id=\"confirm-modal-accept\" class=\"btn btn-primary\">Confirm</button></div></div></div>")
+		templ_7745c5c3_Err = templruntime.WriteString(templ_7745c5c3_Buffer, 88, "</div></div>")
 		if templ_7745c5c3_Err != nil {
 			return templ_7745c5c3_Err
 		}