FUll implementation plan (first draft)

src/StellaOps.Cli/Services/Models/ExcititorOperationResult.cs

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+using System.Text.Json;
+
+namespace StellaOps.Cli.Services.Models;
+
+internal sealed record ExcititorOperationResult(
+    bool Success,
+    string Message,
+    string? Location,
+    JsonElement? Payload);

src/StellaOps.Cli/Services/Models/ExcititorProviderSummary.cs

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+using System;
+
+namespace StellaOps.Cli.Services.Models;
+
+internal sealed record ExcititorProviderSummary(
+    string Id,
+    string Kind,
+    string DisplayName,
+    string TrustTier,
+    bool Enabled,
+    DateTimeOffset? LastIngestedAt);