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This commit includes comprehensive work on Phase 6 features: ## Admission Control (Phase 6 admission middleware) - AdmissionStore implementation backed by TrustRankStore - PoW verification with tier-based difficulty computation - Trust tier progression (Newcomer → Established → Trusted → Authority) - API integration with admission status endpoints ## HLC Recency Lens (Phase 6C) - HlcRecencyLens for distributed system ordering - Hybrid logical clock integration with causality preservation ## Cluster Coordination (Phase 6C) - Multi-node cluster tests (availability, partition tolerance) - CRDT convergence tests for anti-entropy sync - Gateway handler improvements ## Aphoria Code Linter (Phase 2A) - RFC/OWASP corpus builders with network fetching and caching - Concept hierarchy with auto-alias creation on conflict detection - Multiple security extractors (TLS, JWT, CORS, secrets, rate limiting) ## Code Organization - Split large files into modules to comply with 500-line limit - Improved test organization with separate test modules - Fixed rkyv serialization for EigenTrustState (AgentScore struct) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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UAT Report: Phase 6 — The Mesh (Distributed Writes)
Date: 2026-02-02 Phase/Feature: Phase 6 (Distributed Writes) + Quickstart Update Tester: Claude Opus 4.5 Status: PASS
Summary
Full product walkthrough of StemeDB after Phase 6 completion. All existing functionality works correctly, all Phase 6 test suites pass, and the new cluster node binary demonstrates distributed routing. Quickstart updated with runnable cluster examples.
Scope
What was tested:
- Full build and lint (
cargo build,cargo clippy) - Validation script (
scripts/validate.sh) - Single-node API server (
stemedb-api) - Swagger UI accessibility
- Go SDK examples (basic, conflict, skeptic)
- curl-based assertion/query workflow
- Skeptic and Layered endpoints
- Phase 6 crates: merkle, rpc, sync, cluster
- Replication battery tests (battery11)
- New cluster node binary (
stemedb-node) - Cluster gateway endpoints
What was NOT tested:
- Multi-node cluster with actual network communication (RPC forwarding not yet wired)
- Failure detection scenarios (SWIM probing)
- Range split/merge under load
- Production deployment configurations
Environment
- Rust version: 1.75+ (stable)
- OS: Darwin 23.6.0 (macOS)
- Commit: main branch, post-Phase 6
Test Results
Build & Lint
| Test | Expected | Actual | Status |
|---|---|---|---|
cargo build --workspace |
Compiles without errors | Compiled in 36.82s | PASS |
cargo clippy --workspace |
No warnings | 1 doc-comment warning (fixed) | PASS |
cargo fmt --all --check |
No diffs | Minor formatting diff (fixed) | PASS |
Validation Script
| Test | Expected | Actual | Status |
|---|---|---|---|
| Build complete | PASS | PASS | PASS |
| Server is healthy | PASS | PASS | PASS |
| Assertion created | PASS | Hash returned | PASS |
| Query returned data | PASS | 1 assertion | PASS |
| Lens query (Recency) | PASS | Winner returned | PASS |
Go SDK Examples
| Test | Expected | Actual | Status |
|---|---|---|---|
basic/main.go |
Creates assertion, queries back | Hash created, 1 result | PASS |
conflict/main.go |
Creates conflict, shows Skeptic/Layered | Contested status, tier resolution | PASS |
skeptic/main.go |
Seeds claims, analyzes conflict | 2 competing claims, conflict score 1.0 | PASS |
API Endpoints (Single-Node)
| Test | Expected | Actual | Status |
|---|---|---|---|
GET /v1/health |
200, healthy status | {"status":"healthy","version":"0.1.0"} |
PASS |
POST /v1/assert |
201, hash returned | {"hash":"...","status":"created"} |
PASS |
GET /v1/query |
200, assertions array | {"assertions":[...],"total_count":1} |
PASS |
GET /v1/skeptic |
200, conflict analysis | Contested status, 2 claims | PASS |
GET /v1/layered |
200, tier resolution | Clinical wins over Anecdotal | PASS |
GET /swagger-ui/ |
200 | HTTP 200 | PASS |
Phase 6 Test Suites
| Crate | Tests | Expected | Actual | Status |
|---|---|---|---|---|
| stemedb-merkle | 16 | All pass | 16/16 | PASS |
| stemedb-rpc | 5 | All pass | 5/5 | PASS |
| stemedb-sync | 10 | All pass | 10/10 | PASS |
| stemedb-cluster (gateway) | 10 | All pass | 10/10 | PASS |
| stemedb-cluster (membership) | 8 | All pass | 8/8 | PASS |
| stemedb-cluster (sharding) | 10 | All pass | 10/10 | PASS |
| battery11 replication | 8 | All pass | 8/8 | PASS |
Cluster Node Binary
| Test | Expected | Actual | Status |
|---|---|---|---|
| Binary builds | Compiles | Built in 3.54s | PASS |
| Node starts | Binds to port 4000 | Gateway listening | PASS |
GET /v1/health |
healthy: true | {"healthy":true,"joined":true} |
PASS |
GET /v1/cluster/status |
Shows shards | 4 shards, version 1 | PASS |
GET /v1/route?subject=Tesla_Inc |
Returns shard | shard_id: 0 | PASS |
GET /v1/route?subject=Bitcoin |
Different shard | shard_id: 3 | PASS |
GET /v1/shards/0 |
Shard metadata | replicas, size, generation | PASS |
Routing Distribution
| Subject | Shard |
|---|---|
| Apple | 0 |
| 2 | |
| Semaglutide | 1 |
| Bitcoin | 3 |
| Central_Bank | 0 |
| Machine_Learning | 0 |
| Rust_Language | 3 |
| Climate_Change | 3 |
Issues Found
1. Doc Comment Formatting in swim.rs
Severity: Low Status: Fixed
Clippy flagged doc_lazy_continuation error at line 407 — missing blank line before continuation.
Fix: Added blank line in doc comment.
2. Health Endpoint Returns Unhealthy for Bootstrap Node
Severity: Medium Status: Fixed
Single-node cluster reported healthy: false because the health check required joined && !members.is_empty(). A bootstrap node has no peers, so members.is_empty() was true.
Fix: Changed health check to just joined — a bootstrap node is healthy if it has joined (even with zero peers).
Fixes Applied
crates/stemedb-cluster/src/membership/swim.rs:407— Added blank line in doc commentcrates/stemedb-cluster/src/gateway/handlers.rs:275— Changed health logic fromjoined && !members.is_empty()tojoinedcargo fmt --all— Applied formatting fixes
Artifacts
- Cluster node binary:
crates/stemedb-cluster/src/bin/node.rs - Updated quickstart:
quickstart.md(Section 8: Distributed Mode) - Test output: All 67 Phase 6 tests pass
Recommendations
- Add multi-node integration test — Spin up 2-3 nodes, verify SWIM discovery and gossip
- Wire RPC forwarding — Gateway currently returns routing info but doesn't forward to storage nodes
- Add cluster validation script — Similar to
scripts/validate.shbut for cluster mode - Document seed node configuration — How to bootstrap a 3-node cluster
Sign-Off
- All critical tests pass
- No blocking issues remain
- Documentation updated (quickstart.md)
- Ready for release