audit work, fixed StellaOps.sln warnings/errors, fixed tests, sprints work, new advisories

docs/modules/feedser/README.md

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+# Feedser
+
+> Evidence collection library for backport detection and binary fingerprinting.
+
+## Purpose
+
+Feedser provides deterministic, cryptographic evidence collection for backport detection. It extracts patch signatures from unified diffs and binary fingerprints from compiled code to enable high-confidence vulnerability status determination for packages where upstream fixes have been backported by distro maintainers.
+
+## Quick Links
+
+- [Architecture](./architecture.md) - Technical design and implementation details
+
+## Status
+
+| Attribute | Value |
+|-----------|-------|
+| **Maturity** | Production |
+| **Last Reviewed** | 2025-12-29 |
+| **Maintainer** | Concelier Guild |
+
+## Key Features
+
+- **Patch Signature Extraction**: Parse unified diffs and extract normalized hunk signatures
+- **Binary Fingerprinting**: TLSH fuzzy hashing and instruction sequence hashing
+- **Four-Tier Proof System**: Supporting backport detection at multiple confidence levels
+- **Deterministic Outputs**: Canonical JSON serialization with stable hashing
+
+## Dependencies
+
+### Upstream (this module depends on)
+- None (library with no external service dependencies)
+
+### Downstream (modules that depend on this)
+- **Concelier** - ProofService layer consumes Feedser for backport evidence
+- **Attestor** - Evidence storage for generated proofs
+
+## Notes
+
+Feedser is a **library**, not a standalone service. It does not expose REST APIs directly and does not make vulnerability decisions. It provides evidence that feeds into VEX statements and Policy Engine evaluation.
+
+## Related Documentation
+
+- [Concelier Architecture](../concelier/architecture.md)