docs: D91-Nachtrag 5 — Ref-Umbruch und Strg+Klick-Öffnen festgehalten; #trk.create bestanden, #trk.open im Plan

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/examples/werkbaum.werkbaum

@@ -205,13 +205,14 @@
         - [ ] #trk.resolve.read: Read title, link and status (S)
         - [ ] #trk.resolve.map: Map the workflow onto the states (S)
       - [?] #trk.write: Write the status back (M) :#trk.resolve
-      - [/] #trk.create: Create tickets from nodes (XL)
+      - [x] #trk.create: Create tickets from nodes (XL)
         - [^] #trk.create.proxy: Backend proxy with named endpoints (M)
         - [^] #trk.create.login: Log in to Taiga, token stays in the browser (S) :#trk.create.proxy
         - [^] #trk.create.project: The project comes from the inherited tag (S) :#not.tag.project
         - [^] #trk.create.story: A "create story" action in the node window (S) :#trk.create.login
         - [^] #trk.create.tasks: Sub-packages become tasks, picked in a dialog (M) :#trk.create.story
         - [^] #trk.create.ref: The ref lands in the line beside the id (S) :#trk.create.story
+      - [x] #trk.open: Open a ticket ref in Taiga (S) :#trk.create.ref,#not.tag.project
       - [-] #trk.plugin: A plugin inside Taiga itself (L)  %% legacy frontend, self-hosted only
     = [?] #trk.tenzu: Tenzu, the successor (XXL) https://tenzu.net
     = [ ] #trk.none: No tracker, plain text is enough (XS)
@@ -1164,6 +1165,12 @@
   live inside them — so a story per node, and tasks only under a node that
   already carries a story. Decisions in D91.
 
+#trk.open
+  Ctrl+click on a ticket ref — in the text or on its node — opens the
+  ticket in Taiga's web UI; the node window carries an open button, the way
+  on touch. Needs the instance's web address (server configuration,
+  reported by /info) and the inherited &taiga.slug project (D91-Nachtrag 5).
+
 #trk.create.proxy
   A few named endpoints in the Werkbaum backend (auth, projects, user
   stories, tasks) relay to the Taiga instance configured server-side. No