feat(ui): Erststart-Banner und Textkette Repo→Task→Queue→Review (UX-Struktur C)

HasNoLinkedRepo on ListsIslandViewModel drives a dismiss-less banner under the
Lists-Island header when no User list has a linked repo; recomputed on load
and after list CRUD / list-settings save. Sharpens the #192 empty-state texts
into one readable chain (banner → no-repo list → repo-linked list) and adds a
line to the WorkConsole review gate spelling out that Approve also merges the
whole unit.

src/ClaudeDo.Localization/locales/en.json

@@ -221,8 +221,8 @@
     "rerun": "Re-run",
     "refineTip": "Refine this task with Claude",
     "refiningTip": "Claude is refining this task…",
-    "emptyHint": "No tasks yet. Add one above, or send it to the queue once you're ready.",
-    "emptyHintNoWorkingDir": "Link a repo in List Settings to enable the queue, Let Claude handle it, and Quick session."
+    "emptyHint": "No tasks yet. Add one, then right-click it and choose \"Send to queue\" — Claude works it in its own worktree.",
+    "emptyHintNoWorkingDir": "This list has no repo yet — link one in List Settings to enable the queue."
   },
   "lists": {
     "heading": "Lists",
@@ -237,7 +237,9 @@
     "contextOpenFindings": "Open findings folder",
     "contextSettings": "Settings…",
     "newList": "New list",
-    "addReposTip": "Add repos as lists"
+    "addReposTip": "Add repos as lists",
+    "noRepoBannerText": "No repo linked yet. ClaudeDo runs tasks in a git repo.",
+    "noRepoBannerButton": "Import repo"
   },
   "details": {
     "deleteTaskTip": "Delete task",
@@ -310,6 +312,7 @@
     "reviewResetTip": "Discard all changes and reset the task to Idle",
     "reviewFeedbackPlaceholder": "Feedback for next run",
     "mergeDrainHint": "Merge is draining subtasks — Cancel unlocks once it finishes",
+    "approveMergesUnitHint": "Approve also merges this into the target branch right away — there's no separate merge step after it.",
     "continueNoSessionTip": "Resumes the last run — needs a previous session to continue",
     "resetAndRetryInteractiveTip": "Interactive session is open — close it first"
   },