chore: fork with local patches for Syslog Solution

Patches applied:
- enforceRelayTTL — auto-deletes expired relay nodes (>7d)
- updateNode — tenant enforcement (block updates on NULL-namespace nodes)
- buildCanonicalMetadata — reject nested objects, sanitize values
- createNode — source-based and title-based deduplication
- getContext — NPE-safe count queries, stale node detection
- repair_log integration on updateNode
- bridge-validation.js — auto-fill defaults for tenant/namespace

Origin: github.com/bradwmorris/ra-h_os@70e95e7

apps/mcp-server-standalone/bridge-validation.js

@@ -0,0 +1,50 @@
+// RA-H OS Bridge Schema Validation Middleware
+function validateNodePayload(payload) {
+  const errors = [];
+  const required = ['tenant', 'namespace', 'type', 'visibility', 'state', 'captured_by'];
+  const defaults = { 
+    tenant: 'syslogsolution', 
+    namespace: 'syslogsolution', 
+    type: 'note',
+    visibility: 'shared',
+    state: 'not_processed',
+    captured_by: 'agent'
+  };
+  
+  for (const field of required) {
+    payload.metadata = payload.metadata || {}; 
+    if (!payload.metadata[field]) {
+      if (defaults[field]) payload.metadata[field] = defaults[field];
+      else errors.push('Missing required field: ' + field);
+    }
+  }
+  
+  // Also ensure source_metadata exists for compatibility
+  if (!payload.metadata.source_metadata) {
+    payload.metadata.source_metadata = {};
+  }
+  
+  return errors;
+}
+
+function validateEdgePayload(payload) {
+  const errors = [];
+  if (!payload.explanation) {
+    if (payload.context?.explanation) payload.explanation = payload.context.explanation;
+    else errors.push('Missing required field: explanation');
+  }
+  return errors;
+}
+
+function validationMiddleware(operation, payload) {
+  let errors = [];
+  if (['createNode', 'updateNode'].includes(operation)) errors = validateNodePayload(payload);
+  else if (operation === 'createEdge') errors = validateEdgePayload(payload);
+  
+  if (errors.length > 0) {
+    console.error('[BRIDGE_VALIDATION] ' + operation + ' rejected:', { errors: errors, timestamp: new Date().toISOString() });
+    return { success: false, errors: errors };
+  }
+  return { success: true, payload: payload };
+}
+module.exports = { validationMiddleware };