Add cs.money worker stack with per-worker IPRoyal residential proxy

Brings up the pull-model scraper: the .NET C2 hands skin+wear jobs to Python nodriver workers that scrape cs.money and post results back, plus the supporting Core/EFCore data model, migrations, and docker-compose orchestration.

IPRoyal proxying lets workers scale horizontally with a distinct residential exit IP each: every worker process mints its own sticky session at startup, and an in-process forwarding proxy injects the gateway auth so Chromium talks only to an auth-free localhost endpoint (zero CDP). On a Cloudflare challenge a worker rotates to a fresh session/IP and re-warms. Verified end-to-end against live IPRoyal: distinct US residential exits per worker and IP rotation on demand.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

BlueLaminate/BlueLaminate.Core/Options/SweepOptions.cs

@@ -0,0 +1,36 @@
+namespace BlueLaminate.Core.Options;
+
+/// <summary>
+/// Pacing configuration for the listing sweeps, bound from the <c>Sweep</c>
+/// configuration section. Controls how the sweep throttles itself between API
+/// pages so it stays under CSFloat's rate limit. Defaults preserve the original
+/// hard-coded behaviour.
+/// </summary>
+public sealed class SweepOptions
+{
+    public const string SectionName = "Sweep";
+
+    /// <summary>
+    /// Base courtesy delay between pages, applied even when the rate-limit bucket
+    /// looks healthy so we never hammer the API at a fixed cadence.
+    /// </summary>
+    public TimeSpan PageDelay { get; set; } = TimeSpan.FromSeconds(5);
+
+    /// <summary>
+    /// Upper bound on the random jitter added to <see cref="PageDelay"/>; the
+    /// spread keeps request timing from being perfectly regular.
+    /// </summary>
+    public TimeSpan MaxJitter { get; set; } = TimeSpan.FromSeconds(3);
+
+    /// <summary>
+    /// Pace before the rate-limit bucket is fully empty by this many requests, so
+    /// a slightly-stale counter can't tip us into a 429.
+    /// </summary>
+    public int RateLimitSafetyMargin { get; set; } = 2;
+
+    /// <summary>
+    /// Fallback wait when the bucket is exhausted but the API didn't report a usable
+    /// reset time. Guarantees we never fire a request at zero remaining.
+    /// </summary>
+    public TimeSpan RateLimitCooldown { get; set; } = TimeSpan.FromSeconds(60);
+}