refactor(js): tag-utils uses display_name and tag_id

getTagDisplayName is now a passthrough; post-refactor names are bare
and callers that need the character+fandom suffix pass tag.display_name
from the server. createTagChipHtml builds ?tag_id=<int> URLs and uses
display_name for the label. bulk-select.js callers pass display_name
directly.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/static/js/bulk-select.js

@@ -270,7 +270,7 @@
 
     dom.commonTags.innerHTML = tags.map(t => {
       const icon = getTagIcon(t.kind);
-      const display = getTagDisplayName(t.name, t.kind);
+      const display = t.display_name || t.name;
       const escapedName = escapeHtml(t.name);
       const escapedDisplay = escapeHtml(display);
       return `<span class="tag-chip removable" data-name="${escapedName}">
@@ -605,7 +605,7 @@
 
     dom.autocomplete.innerHTML = tags.map((t, i) => {
       const icon = getTagIcon(t.kind);
-      const displayName = getTagDisplayName(t.name, t.kind);
+      const displayName = t.display_name || t.name;
       return `<div class="tag-autocomplete-item" data-index="${i}" data-name="${escapeHtml(t.name)}">
         <span>${icon} ${escapeHtml(displayName)}</span>
         <span class="tag-kind">${t.kind || 'user'}</span>

app/static/js/tag-utils.js

@@ -24,35 +24,35 @@
   }
 
   /**
-   * Get display name for a tag, stripping the prefix if present
-   * @param {string} name - Full tag name (e.g., "artist:Name")
-   * @param {string} [kind] - Optional tag kind for context
-   * @returns {string} Display name without prefix
+   * Get display name for a tag.
+   *
+   * Post-refactor tag names are stored bare (no kind: prefix), so this helper
+   * is now a near-passthrough. Callers that need character+fandom qualified
+   * names (e.g. "Ruby Rose (RWBY)") should pass `tag.display_name` from the
+   * server response directly.
+   *
+   * @param {string} name - Bare tag name
+   * @returns {string} The name unchanged
    */
-  function getTagDisplayName(name, kind) {
-    // For prefixed kinds, strip the prefix
-    if (kind && ['artist', 'character', 'series', 'fandom', 'rating'].includes(kind)) {
-      return name.includes(':') ? name.split(':', 2)[1] : name;
-    }
-    // If no kind specified but has colon, assume it's prefixed
-    if (!kind && name.includes(':')) {
-      return name.split(':', 2)[1];
-    }
+  function getTagDisplayName(name) {
     return name;
   }
 
   /**
-   * Get display name for tag overlay (used in gallery items)
-   * Returns name with # prefix for unprefixed user tags
-   * @param {string} name - Full tag name
+   * Get overlay-formatted display name for a tag.
+   *
+   * User-kind (untyped) tags get a '#' hashtag prefix; every other kind
+   * gets the bare name (or whatever display form the caller passed).
+   *
+   * @param {string} name - Bare tag name or pre-rendered display_name
    * @param {string} kind - Tag kind
-   * @returns {string} Display name for overlay
+   * @returns {string} Overlay label
    */
   function getTagDisplayNameForOverlay(name, kind) {
-    if (['artist', 'character', 'series', 'fandom', 'rating'].includes(kind)) {
-      return name.includes(':') ? name.split(':', 2)[1] : name;
+    if (!kind || kind === 'user') {
+      return '#' + name;
     }
-    return '#' + name;
+    return name;
   }
 
   /**
@@ -68,13 +68,13 @@
 
   /**
    * Format a tag for display with icon and name
-   * @param {Object} tag - Tag object with name and kind
+   * @param {Object} tag - Tag object with name, kind, and optional display_name
    * @returns {string} Formatted HTML string
    */
   function formatTagHtml(tag) {
     const icon = getTagIcon(tag.kind);
-    const displayName = getTagDisplayName(tag.name, tag.kind);
-    const escaped = escapeHtml(displayName);
+    const label = tag.display_name || tag.name;
+    const escaped = escapeHtml(label);
 
     if (icon !== '#') {
       return `${icon} ${escaped}`;
@@ -83,21 +83,21 @@
   }
 
   /**
-   * Create tag chip HTML for gallery overlays
-   * @param {Object} tag - Tag object with name and kind
+   * Create tag chip HTML for gallery overlays.
+   *
+   * @param {Object} tag - Tag object with id, name, kind, and optional display_name
    * @param {boolean} [stopPropagation=true] - Add onclick to stop propagation
    * @returns {string} HTML string for tag chip link
    */
   function createTagChipHtml(tag, stopPropagation = true) {
     const icon = getTagIcon(tag.kind);
-    const displayName = getTagDisplayNameForOverlay(tag.name, tag.kind);
-    const encodedName = encodeURIComponent(tag.name);
-    const escapedTitle = escapeHtml(tag.name);
-    const escapedDisplay = escapeHtml(displayName);
-    const prefix = icon !== '#' ? icon + ' ' : '#';
+    const label = tag.display_name || getTagDisplayNameForOverlay(tag.name, tag.kind);
+    const escapedLabel = escapeHtml(label);
+    const escapedTitle = escapeHtml(tag.display_name || tag.name);
+    const prefix = icon !== '#' ? icon + ' ' : '';
     const onclick = stopPropagation ? ' onclick="event.stopPropagation()"' : '';
 
-    return `<a class="tag-chip" href="/gallery?tag=${encodedName}" title="Filter by ${escapedTitle}"${onclick}>${prefix}${escapedDisplay}</a>`;
+    return `<a class="tag-chip tag-chip-${tag.kind || 'user'}" href="/gallery?tag_id=${tag.id}" title="Filter by ${escapedTitle}"${onclick}>${prefix}${escapedLabel}</a>`;
   }
 
   // Export to window.TagUtils