feat(tasks): mark tasks and lists as manual

Reminders written down as todos had no home: every task looked like Claude work.
A manual task now shows a MANUAL badge and hides send-to-queue, refine and the
planning session; the queue picker, daily prep and the list handler all skip it,
with a TaskStateService guard so the MCP surface and hub cannot start one either.
Opening a hand-driven ConPTY session stays available on purpose.

A list can be marked manual in its settings, which makes tasks created there
(UI and MCP add_task) start out manual. Toggle per task from its context menu.

src/ClaudeDo.Localization/locales/en.json

@@ -144,6 +144,10 @@
     "ctxAddToMyDay": "Add to My Day",
     "badgeDraft": "DRAFT",
     "badgePlanned": "PLANNED",
+    "badgeManual": "MANUAL",
+    "manualTip": "Manual reminder — Claude never picks this up",
+    "ctxMarkManual": "Mark as manual",
+    "ctxMarkClaudeTask": "Mark as Claude task",
     "approve": "Approve",
     "approveTip": "Approve — mark Done",
     "reject": "Reject",
@@ -318,6 +322,8 @@
       "workingDirectoryPlaceholder": "(none)",
       "browse": "Browse...",
       "defaultCommitType": "Default commit type",
+      "manualList": "Manual list (reminders)",
+      "manualListHint": "New tasks in this list start out manual: no queueing, running or refining, and automation skips them. You can still open a hand-driven session.",
       "sectionAgent": "AGENT",
       "resetAgentSettings": "Reset agent settings"
     },