Restructure solution layout by module

src/Concelier/__Libraries/StellaOps.Concelier.Connector.Ics.Cisa/HANDOVER.md

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+# ICS CISA Connector – Status (2025-10-16)
+
+## Context
+- Proxy plumbing for GovDelivery (`SourceHttpClientOptions.Proxy*`) is implemented and covered by `SourceHttpClientBuilderTests.AddSourceHttpClient_LoadsProxyConfiguration`.
+- Detail enrichment now extracts mitigation paragraphs/bullets, merges them with feed data, and emits `mitigation` references plus combined alias sets.
+- `BuildAffectedPackages` parses product/version pairs and now persists SemVer exact values for canonical ranges via the advisory store.
+
+## Current Outcomes
+- Feed parser fixtures were refreshed so vendor PDFs stay surfaced as attachments; DTO references continue including canonical links.
+- SemVer primitive deserialisation now restores `exactValue` (e.g., `"4.2"` → `"4.2.0"`), keeping connector snapshots deterministic.
+- Console debugging noise was removed from connector/parser code.
+- Ops runbook documents attachment + SemVer validation steps for dry runs.
+- `dotnet test src/Concelier/__Tests/StellaOps.Concelier.Connector.Ics.Cisa.Tests/StellaOps.Concelier.Connector.Ics.Cisa.Tests.csproj` passes (2025-10-16).
+
+## Outstanding Items
+- None. Continue monitoring Akamai access decisions and proxy requirements via Ops feedback.
+
+## Verification Checklist
+- ✅ `dotnet test src/Concelier/__Tests/StellaOps.Concelier.Connector.Ics.Cisa.Tests/StellaOps.Concelier.Connector.Ics.Cisa.Tests.csproj`
+- ☐ `dotnet test src/Concelier/StellaOps.Concelier.PluginBinaries/StellaOps.Concelier.Connector.Common.Tests/StellaOps.Concelier.Connector.Common.Tests.csproj` (proxy support) — rerun when Source.Common changes land.
+- Keep this summary aligned with `TASKS.md` as further work emerges.