feat: Add VEX Lens CI and Load Testing Plan

- Introduced a comprehensive CI job structure for VEX Lens, including build, test, linting, and load testing.
- Defined load test parameters and SLOs for VEX Lens API and Issuer Directory.
- Created Grafana dashboards and alerting mechanisms for monitoring API performance and error rates.
- Established offline posture guidelines for CI jobs and load testing.

feat: Implement deterministic projection verification script

- Added `verify_projection.sh` script for verifying the integrity of projection exports against expected hashes.
- Ensured robust error handling for missing files and hash mismatches.

feat: Develop Vuln Explorer CI and Ops Plan

- Created CI jobs for Vuln Explorer, including build, test, and replay verification.
- Implemented backup and disaster recovery strategies for MongoDB and Redis.
- Established Merkle anchoring verification and automation for ledger projector.

feat: Introduce EventEnvelopeHasher for hashing event envelopes

- Implemented `EventEnvelopeHasher` to compute SHA256 hashes for event envelopes.

feat: Add Risk Store and Dashboard components

- Developed `RiskStore` for managing risk data and state.
- Created `RiskDashboardComponent` for displaying risk profiles with filtering capabilities.
- Implemented unit tests for `RiskStore` and `RiskDashboardComponent`.

feat: Enhance Vulnerability Detail Component

- Developed `VulnerabilityDetailComponent` for displaying detailed information about vulnerabilities.
- Implemented error handling for missing vulnerability IDs and loading failures.

ops/devops/docker/healthcheck.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+set -eu
+HOST="${HEALTH_HOST:-127.0.0.1}"
+PORT="${HEALTH_PORT:-8080}"
+LIVENESS_PATH="${LIVENESS_PATH:-/health/liveness}"
+READINESS_PATH="${READINESS_PATH:-/health/readiness}"
+USER_AGENT="stellaops-healthcheck"
+
+fetch() {
+  target_path="$1"
+  # BusyBox wget is available in Alpine; curl not assumed.
+  wget -qO- "http://${HOST}:${PORT}${target_path}" \
+    --header="User-Agent: ${USER_AGENT}" \
+    --timeout="${HEALTH_TIMEOUT:-4}" >/dev/null
+}
+
+fail=0
+if ! fetch "$LIVENESS_PATH"; then
+  fail=1
+fi
+if ! fetch "$READINESS_PATH"; then
+  fail=1
+fi
+exit "$fail"