Abstimmung: mehrere Agenten pruefen unabhaengig und stimmen blind ab (#702)

A unit can put operations to a blind vote instead of its lead. Not opinions
are counted but independent checks enforced.

- UnitConfig.votes: operations, voters, approveAt, rejectAt, quorum, hours,
  perDay - set only by a human (OrgAdministration.SetVotes).
- Core/Staging/Votes: routes a covered staged call before the lead; one task
  per voter with the frozen call and nothing else; cast_vote needs reasoning
  and evidence. Counted as soon as the result is settled; in between and
  without the quorum a human decides. The proposer does not vote, voters that
  read foreign content get no ballot, changes to agents never go to a vote.
- Escalation tool: list_ballots, cast_vote.
- Approvals view shows each vote with every ballot and the voters' costs;
  organisation view sets the rule and lists the votes held.

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

src/ClawdDotNet.Core/Engine/AgentEngine.cs

@@ -63,6 +63,9 @@ public sealed class AgentEngine : IAgentMessageRouter, Staging.IFrozenCallExecut
     /// <summary>#693: The leads' spot checks; set by the host.</summary>
     public Inspection.ISpotChecks? SpotChecks { get; set; }
 
+    /// <summary>#702: Blind votes on staged calls; set by the host.</summary>
+    public Staging.IVotes? Votes { get; set; }
+
     /// <summary>
     /// #717: Special budgets. A run on a task in a funded tree draws on the pot instead of the
     /// daily limits; without this, every run counts against the day.
@@ -1878,6 +1881,7 @@ public sealed class AgentEngine : IAgentMessageRouter, Staging.IFrozenCallExecut
             Approvals = LeadApprovals,
             Doctrines = Doctrines,
             SpotChecks = SpotChecks,
+            Votes = Votes,
             SpecialBudgets = SpecialBudgets,
             Sandbox = Sandbox,
             Files = Files,