feat: display sha512t24u digests in web UI contig details

Add sha512t24u (GA4GH refget) digests to the detailed API response
for both query and reference contigs, and render them in the contig
detail panel alongside the existing MD5 hash.

Author: nh13

src/web/server.rs

@@ -629,6 +629,7 @@ async fn handle_detailed_response(
                     "name": contig.name,
                     "length": contig.length,
                     "md5": contig.md5,
+                    "sha512t24u": contig.sha512t24u,
                     "sequence_role": format!("{:?}", contig.sequence_role),
                     "aliases": contig.aliases,
                     "match_status": match_status
@@ -665,6 +666,7 @@ async fn handle_detailed_response(
                     "name": contig.name,
                     "length": contig.length,
                     "md5": contig.md5,
+                    "sha512t24u": contig.sha512t24u,
                     "sequence_role": format!("{:?}", contig.sequence_role),
                     "aliases": contig.aliases,
                     "match_status": match_status

src/web/static/js/managers/SplitViewManager.js

@@ -15,6 +15,7 @@ import { escapeHtml, debounce, DEBOUNCE_DELAY } from '../utils/helpers.js';
  * @property {string} name - Contig name
  * @property {number} length - Contig length in base pairs
  * @property {string} [md5] - MD5 hash of sequence
+ * @property {string} [sha512t24u] - GA4GH sha512t24u digest
  * @property {MatchStatus} match_status - Match status
  * @property {string} [sequence_role] - Role of the sequence
  * @property {string[]} [aliases] - Alternative names
@@ -637,6 +638,14 @@ export class SplitViewManager {
                                 </div>
                                 ` : ''}
 
+                                <!-- Only show sha512t24u if it exists -->
+                                ${contig.sha512t24u ? `
+                                <div class="detail-row">
+                                    <span class="detail-label">sha512t24u:</span>
+                                    <span class="detail-value monospace">${escapeHtml(contig.sha512t24u)}</span>
+                                </div>
+                                ` : ''}
+
                                 <!-- Only show sequence role if it exists -->
                                 ${contig.sequence_role ? `
                                 <div class="detail-row">