diff --git a/pyproject.toml b/pyproject.toml
index e42cf18..479ed47 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,6 +31,9 @@ dependencies = [
     "pyserial>=3.5",
     "Werkzeug>=3.1.5",
     "flask-limiter>=2.5.4",
+    "bleak>=0.21.0",
+    "flask-sock",
+    "requests>=2.28.0",
 ]
 
 [project.urls]
diff --git a/requirements.txt b/requirements.txt
index 791f646..0fe5775 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@
 flask>=2.0.0
 flask-limiter>=2.5.4
 requests>=2.28.0
+Werkzeug>=3.1.5
 
 # BLE scanning with manufacturer data detection (optional - for TSCM)
 bleak>=0.21.0
diff --git a/tests/test_requirements.py b/tests/test_requirements.py
new file mode 100644
index 0000000..27e4922
--- /dev/null
+++ b/tests/test_requirements.py
@@ -0,0 +1,109 @@
+import pytest
+from pathlib import Path
+import importlib.metadata
+import tomllib  # Standard in Python 3.11+
+
+def get_root_path():
+    return Path(__file__).parent.parent
+
+def _clean_string(req):
+    """Normalizes a requirement string (lowercase and removes spaces)."""
+    return req.strip().lower().replace(" ", "")
+
+def parse_txt_requirements(file_path):
+    """Extracts full requirement strings (name + version) from a .txt file."""
+    if not file_path.exists():
+        return set()
+    packages = set()
+    with open(file_path, "r") as f:
+        for line in f:
+            line = line.strip()
+            # Ignore empty lines, comments, and recursive/local flags
+            if not line or line.startswith(("#", "-e", "git+", "-r")):
+                continue
+            packages.add(_clean_string(line))
+    return packages
+
+def parse_toml_section(data, section_type="main"):
+    """Extracts full requirement strings from pyproject.toml."""
+    packages = set()
+    if section_type == "main":
+        deps = data.get("project", {}).get("dependencies", [])
+    else:
+        # Check optional-dependencies or dependency-groups
+        deps = data.get("project", {}).get("optional-dependencies", {}).get("dev", [])
+        if not deps:
+            deps = data.get("dependency-groups", {}).get("dev", [])
+            
+    for req in deps:
+        packages.add(_clean_string(req))
+    return packages
+
+def test_dependency_files_integrity():
+    """1. Verifies that .txt files and pyproject.toml have identical names AND versions."""
+    root = get_root_path()
+    toml_path = root / "pyproject.toml"
+    assert toml_path.exists(), "Missing pyproject.toml"
+
+    with open(toml_path, "rb") as f:
+        toml_data = tomllib.load(f)
+
+    # Validate Production Sync
+    txt_main = parse_txt_requirements(root / "requirements.txt")
+    toml_main = parse_toml_section(toml_data, "main")
+    assert txt_main == toml_main, (
+        f"Production version mismatch!\n"
+        f"Only in TXT: {txt_main - toml_main}\n"
+        f"Only in TOML: {toml_main - txt_main}"
+    )
+
+    # Validate Development Sync
+    txt_dev = parse_txt_requirements(root / "requirements-dev.txt")
+    toml_dev = parse_toml_section(toml_data, "dev")
+    assert txt_dev == toml_dev, (
+        f"Development version mismatch!\n"
+        f"Only in TXT: {txt_dev - toml_dev}\n"
+        f"Only in TOML: {toml_dev - txt_dev}"
+    )
+
+def test_environment_vs_toml():
+    """2. Verifies that installed packages satisfy TOML requirements."""
+    root = get_root_path()
+    with open(root / "pyproject.toml", "rb") as f:
+        data = tomllib.load(f)
+    
+    all_declared = parse_toml_section(data, "main") | parse_toml_section(data, "dev")
+    _verify_installation(all_declared, "TOML")
+
+def test_environment_vs_requirements():
+    """3. Verifies that installed packages satisfy .txt requirements."""
+    root = get_root_path()
+    all_txt_deps = (
+        parse_txt_requirements(root / "requirements.txt") | 
+        parse_txt_requirements(root / "requirements-dev.txt")
+    )
+    _verify_installation(all_txt_deps, "requirements.txt")
+
+def _verify_installation(package_set, source_name):
+    """Helper to check if declared versions match installed versions."""
+    missing_or_wrong = []
+    
+    for req in package_set:
+        # Split name from version to check installation status
+        # handles ==, >=, ~=, <=, > , <
+        import re
+        parts = re.split(r'==|>=|~=|<=|>|<', req)
+        name = parts[0].strip()
+        
+        try:
+            installed_ver = importlib.metadata.version(name)
+            # If the config uses exact versioning '==', we can do a strict check
+            if "==" in req:
+                expected_ver = req.split("==")[1].strip()
+                if installed_ver != expected_ver:
+                    missing_or_wrong.append(f"{name} (Installed: {installed_ver}, Expected: {expected_ver})")
+        except importlib.metadata.PackageNotFoundError:
+            missing_or_wrong.append(f"{name} (Not installed)")
+
+    if missing_or_wrong:
+        pytest.fail(f"Environment out of sync with {source_name}:\n" + "\n".join(missing_or_wrong))
\ No newline at end of file