feat(workspace): links to single bullets

- copy a link to a bullet from its action bubble or pick a bullet in the
  link dialog; [[Note#^id|Note › excerpt]] opens the note, jumps to and
  highlights the bullet, or says it is gone
- wiki links render inline with their label and are clickable; the
  duplicate chip below the text is gone

test(e2e): run each suite with its own container, image tag and port, so
parallel runs from another working copy no longer remove our server

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/src/features/workspace/DocumentEditor.tsx

@@ -1,5 +1,6 @@
 import React, { useState, useEffect, useRef, useCallback, useMemo, useSyncExternalStore } from 'react';
 import { createPortal } from 'react-dom';
+import { buildBlockLink } from '../../lib/wikiLink';
 import {
   Pin,
   Users,
@@ -51,7 +52,7 @@ export interface DocumentEditorProps {
   onRestoreDoc?: (docId: string) => void;
   onOpenShareModal: (doc: Document) => void;
   onSelectTag: (tag: string) => void;
-  onWikiLinkClick?: (pageTitle: string) => void;
+  onWikiLinkClick?: (pageTitle: string, blockId?: string) => void;
   onOpenDocBlock?: (docId: string, blockId?: string) => void;
   onBackMobile?: () => void;
   onOpenTask?: (taskId: string) => void;
@@ -495,6 +496,34 @@ export const DocumentEditor: React.FC<DocumentEditorProps> = ({
     }, actions.length ? 8000 : 3500);
   }, []);
 
+  // Link to a single bullet: [[Titel#^id|Titel › Auszug]] into the clipboard
+  const handleCopyBlockLink = useCallback(
+    (blockId: string) => {
+      const block = blocks.find((b) => b.id === blockId);
+      const link = buildBlockLink(title || doc?.title || 'Notiz', blockId, block?.content || '');
+      const done = () => showNotice('Link zum Punkt kopiert – mit Strg+V in eine Notiz einfügen');
+      if (navigator.clipboard?.writeText) {
+        navigator.clipboard.writeText(link).then(done, () => showNotice(`Kopieren nicht möglich: ${link}`));
+      } else {
+        showNotice(`Kopieren nicht möglich: ${link}`);
+      }
+    },
+    [blocks, title, doc?.title, showNotice]
+  );
+
+  // A link pointed to a bullet that is gone (moved, extracted, deleted): the note opens with a hint
+  const blocksForTargetRef = useRef(blocks);
+  blocksForTargetRef.current = blocks;
+  useEffect(() => {
+    if (!initialFocusedBlockId || !doc?.id) return;
+    const timer = window.setTimeout(() => {
+      if (!blocksForTargetRef.current.some((b) => b.id === initialFocusedBlockId)) {
+        showNotice('Der verlinkte Punkt ist in dieser Notiz nicht mehr vorhanden');
+      }
+    }, 1500);
+    return () => window.clearTimeout(timer);
+  }, [initialFocusedBlockId, doc?.id, showNotice]);
+
   // The last extraction, so undoing it (toast or Strg+Z) also puts the new note into the trash
   const lastExtractRef = useRef<{ newDocId: string; blockId: string; link: string } | null>(null);
   const finishUndoExtract = useCallback(() => {
@@ -1188,6 +1217,7 @@ export const DocumentEditor: React.FC<DocumentEditorProps> = ({
                 onOpenTask={onOpenTask}
                 onTagClick={onSelectTag}
                 onWikiLinkClick={onWikiLinkClick}
+                onCopyBlockLink={handleCopyBlockLink}
                 initialFocusedBlockId={initialFocusedBlockId}
                 onFocusedBlockChange={(id) => engineRef.current?.focusBlock(id)}
                 lockedBlocks={lockedBlocks}
@@ -1277,6 +1307,7 @@ export const DocumentEditor: React.FC<DocumentEditorProps> = ({
               onOpenTask={onOpenTask}
               onTagClick={onSelectTag}
               onWikiLinkClick={onWikiLinkClick}
+              onCopyBlockLink={handleCopyBlockLink}
               initialFocusedBlockId={initialFocusedBlockId}
               onFocusedBlockChange={(id) => engineRef.current?.focusBlock(id)}
               lockedBlocks={lockedBlocks}