diff --git a/Server/config_validator.py b/Server/config_validator.py
new file mode 100644
index 0000000..183cd8b
--- /dev/null
+++ b/Server/config_validator.py
@@ -0,0 +1,51 @@
+import os
+import sys
+import logging
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger("ConfigValidator")
+
+REQUIRED_ENV_VARS = {
+    "SUPABASE_URL": "Required to query database case records and render evidence graphs.",
+    "SUPABASE_ANON_KEY": "Required to authenticate database client connections securely.",
+    "ADMIN_TOKEN": "Required to authorize administration workflows (e.g. stats, reports).",
+    "INVESTIGATOR_TOKEN": "Required to validate forensic investigator operations."
+}
+
+def validate_environment():
+    """Verify presence of critical environment variables and print clean diagnostic logs."""
+    missing_vars = []
+    
+    print("\n" + "="*70)
+    print("      FORENSIC PRO SUITE - BACKEND BOOTSTRAP ENVIRONMENT SCAN")
+    print("="*70)
+    
+    for var, description in REQUIRED_ENV_VARS.items():
+        value = os.getenv(var)
+        if not value:
+            missing_vars.append((var, description))
+            status = " [ MISSING ] "
+        else:
+            # Mask token values for security
+            masked_value = value[:4] + "*"*8 if len(value) > 4 else "*"*8
+            status = f" [ OK ] - {masked_value}"
+        print(f" -> {var:<22} {status}")
+        
+    print("="*70)
+    
+    if missing_vars:
+        print("\n" + "!"*70)
+        print("  WARNING: Configuration validation found missing required env keys:")
+        for var, description in missing_vars:
+            print(f"  * {var}: {description}")
+        print("  Ensure you copy .env.example to .env and configure these parameters.")
+        print("!"*70 + "\n")
+        
+        # We will log a warning but allow local running for development fallback modes.
+        logger.warning("Server is starting up with incomplete environment variable settings.")
+    else:
+        logger.info("All core infrastructure environment configurations validated successfully.")
+    print("="*70 + "\n")
+
+if __name__ == "__main__":
+    validate_environment()
diff --git a/Server/main.py b/Server/main.py
index 665dc67..45e37e3 100644
--- a/Server/main.py
+++ b/Server/main.py
@@ -1,4 +1,6 @@
+# pyrefly: ignore [missing-import]
 from fastapi import FastAPI, UploadFile, File, HTTPException, Depends, Header, Request
+# pyrefly: ignore [missing-import]
 from fastapi.middleware.cors import CORSMiddleware
 from security import (
     inspect_archive_limits,
@@ -17,6 +19,9 @@
 logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger(__name__)
 
+from config_validator import validate_environment
+validate_environment()
+
 app = FastAPI()
 
 allowed_origin = os.getenv("ALLOWED_ORIGIN", "http://localhost:3000")
@@ -41,6 +46,7 @@
 MAX_FILE_SIZE = 500 * 1024 * 1024
 
 
+# pyrefly: ignore [parse-error]
 def get_api_user(authorization: str | None = Header(None)):
     if not authorization:
         raise HTTPException(status_code=401, detail="Authorization header missing")
@@ -117,6 +123,7 @@ async def run_forensic_pipeline(
 
         # Record provenance to Supabase so it appears in the Evidence Graph
         try:
+            # pyrefly: ignore [missing-import]
             from supabase import create_client
             url = os.getenv("SUPABASE_URL")
             key = os.getenv("SUPABASE_ANON_KEY")
@@ -178,6 +185,7 @@ async def get_graph_relationships():
     try:
         cases = []
         try:
+            # pyrefly: ignore [missing-import]
             from supabase import create_client
             url = os.getenv("SUPABASE_URL")
             key = os.getenv("SUPABASE_ANON_KEY")
@@ -206,6 +214,7 @@ async def get_evidence_provenance(case_id: str):
     try:
         cases = []
         try:
+            # pyrefly: ignore [missing-import]
             from supabase import create_client
             url = os.getenv("SUPABASE_URL")
             key = os.getenv("SUPABASE_ANON_KEY")
@@ -259,6 +268,7 @@ async def expand_node(node_id: str):
         raise HTTPException(status_code=500, detail="Error expanding node.")
 
 
+# pyrefly: ignore [missing-import]
 from fastapi import BackgroundTasks
 import asyncio
 
@@ -278,5 +288,6 @@ async def trigger_graph_analysis(background_tasks: BackgroundTasks):
 
 
 if __name__ == "__main__":
+    # pyrefly: ignore [missing-import]
     import uvicorn
     uvicorn.run(app, host="0.0.0.0", port=8000)
diff --git a/client/package-lock.json b/client/package-lock.json
index ec22d54..3960e2b 100644
--- a/client/package-lock.json
+++ b/client/package-lock.json
@@ -47,6 +47,9 @@
         "eslint-config-next": "16.1.6",
         "tailwindcss": "^4",
         "typescript": "^5"
+      },
+      "engines": {
+        "node": ">=18.0.0"
       }
     },
     "node_modules/@alloc/quick-lru": {