Automatisierungsvorschlaege: Agenten schlagen n8n-Workflows vor, der Mensch importiert von Hand (#726)

- Core/Automation/WorkflowReview: free check of an n8n export - every node
  with its effect and target, code/command/SSH nodes only with a stated
  reason, embedded secrets refused (by name or by look), a short summary of
  what the workflow does.
- AutomationProposals: measured saving from the replaced tasks' receipts
  (28 days), at most 3 open per agent, the same purpose not twice, a
  rejected proposal must be answered; the human gets a task and decides in
  the approvals view. Accepting records it - importing stays a human's step.
- Candidates: recurring tasks whose runs repeat the same calls (>= 75 % of
  >= 8 runs in 14 days) are put to their agent once a month.
- Escalation tool: automation_find, automation_propose.
- Approvals view: proposals with nodes, targets, warnings, saving, JSON
  download, accept/reject.

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

src/ClawdDotNet.Core/Tools/AgentToolContext.cs

@@ -61,6 +61,9 @@ public sealed record AgentToolContext(
     /// <summary>#702: The ballots of a voter. <c>null</c> outside the engine.</summary>
     public Staging.IVotes? Votes { get; init; }
 
+    /// <summary>#726: Automation proposals of agents. <c>null</c> outside the engine.</summary>
+    public Automation.IAutomationProposals? Automations { get; init; }
+
     /// <summary>#654: Where code runs — never in the main process. Unavailable under Windows.</summary>
     public Sandbox.ISandboxRunner? Sandbox { get; init; }