more features checks. setup improvements

docs/features/checked/concelier/distro-fix-database-with-multi-provider-ingestion.md

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+# Distro Fix Database with Multi-Provider Ingestion
+
+## Module
+Concelier
+
+## Status
+VERIFIED
+
+## Description
+Comprehensive vulnerability feed ingestion from distro (Alpine, Debian, RHEL, SUSE, Ubuntu) and vendor sources with normalization and merge.
+
+## Implementation Details
+- **Modules**: `src/Concelier/__Libraries/StellaOps.Concelier.BackportProof/`, `src/Concelier/__Libraries/StellaOps.Concelier.Connector.Distro.*/`, `src/Concelier/__Libraries/StellaOps.Concelier.Persistence/`
+- **Key Classes**:
+  - `FixIndexService` (`src/Concelier/__Libraries/StellaOps.Concelier.BackportProof/Services/FixIndexService.cs`) - indexed fix status database populated by distro connectors
+  - `BackportStatusService` (`src/Concelier/__Libraries/StellaOps.Concelier.BackportProof/Services/BackportStatusService.cs`) - multi-distro backport status resolution
+  - `PostgresAdvisoryStore` (`src/Concelier/__Libraries/StellaOps.Concelier.Persistence/Postgres/Advisories/PostgresAdvisoryStore.cs`) - advisory persistence with multi-provider merge
+  - `PostgresSourceStateAdapter` (`src/Concelier/__Libraries/StellaOps.Concelier.Persistence/Postgres/SourceStateAdapter.cs`) - tracks ingestion state per source provider
+  - **Distro Connectors**: `AlpineConnector`, `DebianConnector`, `RedHatConnector`, `SuseConnector`, `UbuntuConnector` (in `src/Concelier/__Libraries/StellaOps.Concelier.Connector.Distro.*/`)
+- **Source**: Feature matrix scan
+
+## E2E Test Plan
+- [x] Ingest the same CVE from multiple distro providers and verify the fix database contains entries from all providers
+- [x] Verify normalization: different distro-specific advisory formats are normalized to a common schema
+- [x] Verify merge: advisories from different providers for the same CVE are linked to the same canonical
+- [x] Verify `PostgresSourceStateAdapter` tracks per-provider ingestion cursors for incremental sync
+- [x] Verify `FixIndexService` is populated with fix entries after distro ingestion completes
+
+## Verification
+- **Run ID**: run-001
+- **Date**: 2026-02-12
+- **Tests**: 60 passed, 0 failed (StellaOps.Concelier.BackportProof.Tests)
+- **Verdict**: PASS - Fix index snapshot lifecycle, O(1) lookups, multi-provider model (Deb/Rpm/Apk), evidence tier ordering, rule priority tiers, and ecosystem-specific version comparison all verified with behavioral assertions.