feat: vendor midstream and sublinear-time-solver libraries

Add ruvnet/midstream (AIMDS real-time inference) and
ruvnet/sublinear-time-solver (sublinear optimization algorithms)
as vendored dependencies under vendor/.

Co-Authored-By: claude-flow <ruv@ruv.net>

vendor/midstream/security-report.json

@@ -0,0 +1,29 @@
+{
+  "timestamp": "2025-10-26T13:57:33.597Z",
+  "totalIssues": 1,
+  "critical": 0,
+  "high": 1,
+  "medium": 0,
+  "low": 0,
+  "issues": [
+    {
+      "severity": "high",
+      "category": "Configuration",
+      "file": ".gitignore",
+      "description": ".env file not excluded from version control",
+      "recommendation": "Add .env to .gitignore to prevent credential leakage"
+    }
+  ],
+  "passed": [
+    ".env.example exists",
+    "No hardcoded API keys found",
+    "Input validation mechanisms found",
+    "Authentication mechanisms present",
+    "HTTPS usage detected",
+    "WSS (secure WebSocket) usage detected",
+    "Rate limiting mechanisms found",
+    "Error handling found in 6 files",
+    "Logging practices reviewed",
+    "CORS configuration present"
+  ]
+}