MCP-Drift-State-Tracker/mcp_drift_state_tracker.py

# ==============================================================================
# mcp_drift_state_tracker.py
# Copyright (C) 2026 Jeremy Anderson info@dcos.net
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# ==============================================================================

import ast
import os
import json
import re
from abc import ABC, abstractmethod
from typing import Dict, Any, List, Set, Optional, Tuple

from mcp.server.fastmcp import FastMCP

mcp = FastMCP("MCP-Drift-State-Tracker")

STATE_FILE_NAME = ".mcp_drift_state.json"

GLOBAL_IGNORE_DIRS = {
    ".git", ".venv", "venv", "__pycache__", "node_modules", "target", 
    "dist", "build", "out", ".cargo", ".rustup", "obj", "bin", ".idea"
}

# ==============================================================================
# DATA-DRIVEN LEXICAL PROFILE TABLES ("CASE ARRAYS")
# ==============================================================================

# C-Family Shared Baseline Pattern
C_STYLE_DEFAULT = {
    "imp": re.compile(r'^\s*(?:import|require|#include)\s+.*'),
    "fn": re.compile(r'(?:public|private|protected|static|async|fun|func|function)?\s*([a-zA-Z_0-9]+)\s*\([^)]*\)\s*(?:\{|->|:)?'),
    "cls": re.compile(r'^\s*(?:export\s+)?(?:class|interface|struct|enum)\s+([a-zA-Z_0-9]+)'),
    "dec": re.compile(r'^\s*@([a-zA-Z_0-9]+)')
}

BRACE_PROFILES: Dict[str, Dict[str, re.Pattern]] = {
    ".rs": {
        "imp": re.compile(r'^\s*(?:pub\s+)?use\s+([^;]+);'),
        "fn": re.compile(r'(?:pub\s+)?(?:async\s+)?fn\s+([a-zA-Z_0-9]+)'),
        "cls": re.compile(r'^\s*(?:pub\s+)?(?:struct|enum|trait)\s+([a-zA-Z_0-9]+)'),
        "dec": re.compile(r'^\s*#\[([^\]]+)\]')
    },
    ".go": {
        "imp": re.compile(r'^\s*import\s+(?:\([^\)]+\)|"[^"]+")'),
        "fn": re.compile(r'^func\s+(?:\([^)]+\)\s+)?([a-zA-Z_0-9]+)'),
        "cls": re.compile(r'^\s*type\s+([a-zA-Z_0-9]+)\s+struct'),
        "dec": re.compile(r'^\s*//\s*@([a-zA-Z_0-9]+)')
    },
    ".php": {
        "imp": re.compile(r'^\s*(?:use|require|include)(?:\s+once)?\s+([^;]+);'),
        "fn": re.compile(r'(?:public|private|protected|static)?\s*function\s+([a-zA-Z_0-9]+)'),
        "cls": re.compile(r'^\s*(?:abstract\s+)?class\s+([a-zA-Z_0-9]+)'),
        "dec": re.compile(r'^\s*<<([^>>]+)>>')
    },
    ".hack": {
        "imp": re.compile(r'^\s*(?:use|require|include)(?:\s+once)?\s+([^;]+);'),
        "fn": re.compile(r'(?:public|private|protected|static)?\s*function\s+([a-zA-Z_0-9]+)'),
        "cls": re.compile(r'^\s*(?:abstract\s+)?class\s+([a-zA-Z_0-9]+)'),
        "dec": re.compile(r'^\s*<<([^>>]+)>>')
    },
    ".sh": {
        "imp": re.compile(r'^\s*(?:\.|source)\s+.*'),
        "fn": re.compile(r'(?:function\s+)?([a-zA-Z_0-9\-]+)\s*\(\s*\)\s*\{?|^\s*function\s+([a-zA-Z_0-9\-]+)'),
        "cls": re.compile(r'^\s*class\s+([a-zA-Z_0-9]+)'),
        "dec": re.compile(r'^\s*#\s*@([a-zA-Z_0-9]+)')
    },
    ".zsh": {
        "imp": re.compile(r'^\s*(?:\.|source)\s+.*'),
        "fn": re.compile(r'(?:function\s+)?([a-zA-Z_0-9\-]+)\s*\(\s*\)\s*\{?|^\s*function\s+([a-zA-Z_0-9\-]+)'),
        "cls": re.compile(r'^\s*class\s+([a-zA-Z_0-9]+)'),
        "dec": re.compile(r'^\s*#\s*@([a-zA-Z_0-9]+)')
    },
    ".ps1": {
        "imp": re.compile(r'^\s*(?:\.|source)\s+.*'),
        "fn": re.compile(r'(?:function\s+)?([a-zA-Z_0-9\-]+)\s*\(\s*\)\s*\{?|^\s*function\s+([a-zA-Z_0-9\-]+)'),
        "cls": re.compile(r'^\s*class\s+([a-zA-Z_0-9]+)'),
        "dec": re.compile(r'^\s*#\s*@([a-zA-Z_0-9]+)')
    }
}

BLOCK_END_PROFILES: Dict[str, Dict[str, Any]] = {
    ".jl": {
        "start": re.compile(r'^\s*(?:function|macro|mutable\s+struct)\s+([a-zA-Z_0-9!]+)'),
        "end": re.compile(r'^\s*end\b'),
        "inc": re.compile(r'\b(if|for|while|let|do|try|quote)\b')
    },
    ".lua": {
        "start": re.compile(r'^\s*(?:local\s+)?function\s+([a-zA-Z_0-9\.:]+)'),
        "end": re.compile(r'^\s*end\b'),
        "inc": re.compile(r'\b(if|for|while|do)\b')
    },
    ".ex": {
        "start": re.compile(r'^\s*(?:def|defp|defmacro)\s+([a-zA-Z_0-9!]+)'),
        "end": re.compile(r'^\s*end\b'),
        "inc": re.compile(r'\b(if|case|cond|unless|try)\b.*\bdo\b')
    },
    ".exs": {
        "start": re.compile(r'^\s*(?:def|defp|defmacro)\s+([a-zA-Z_0-9!]+)'),
        "end": re.compile(r'^\s*end\b'),
        "inc": re.compile(r'\b(if|case|cond|unless|try)\b.*\bdo\b')
    },
    ".adb": {
        "start": re.compile(r'^\s*(?:procedure|function)\s+([a-zA-Z_0-9]+)'),
        "end": re.compile(r'^\s*end\s+[a-zA-Z_0-9]+;'),
        "inc": re.compile(r'\b(if|loop|case|begin)\b')
    },
    ".ads": {
        "start": re.compile(r'^\s*(?:procedure|function)\s+([a-zA-Z_0-9]+)'),
        "end": re.compile(r'^\s*end\s+[a-zA-Z_0-9]+;'),
        "inc": re.compile(r'\b(if|loop|case|begin)\b')
    },
    ".au3": {
        "start": re.compile(r'^\s*(?:Func)\s+([a-zA-Z_0-9]+)'),
        "end": re.compile(r'^\s*EndFunc\b'),
        "inc": re.compile(r'^\s*(If|While|For|Select|Switch)\b')
    },
    ".vbs": {
        "start": re.compile(r'^\s*(?:Function|Sub)\s+([a-zA-Z_0-9]+)', re.IGNORECASE),
        "end": re.compile(r'^\s*End\s+(?:Function|Sub)\b', re.IGNORECASE),
        "inc": re.compile(r'^\s*(If|For|While|Do)\b', re.IGNORECASE)
    }
}

SEQUENTIAL_PROFILES: Dict[str, Dict[str, Any]] = {
    ".bat": {
        "start": re.compile(r'^\s*:([a-zA-Z_0-9\-]+)'),
        "end": re.compile(r'^\s*(?:goto\s+:eof|exit\b)', re.IGNORECASE),
        "stubs": ["rem todo", "rem fixme", "echo placeholder"]
    },
    ".cmd": {
        "start": re.compile(r'^\s*:([a-zA-Z_0-9\-]+)'),
        "end": re.compile(r'^\s*(?:goto\s+:eof|exit\b)', re.IGNORECASE),
        "stubs": ["rem todo", "rem fixme", "echo placeholder"]
    },
    ".sql": {
        "start": re.compile(r'(?:create\s+(?:or\s+replace\s+)?(?:procedure|function|view))\s+([a-zA-Z_0-9\.]+)', re.IGNORECASE),
        "end": re.compile(r'^\s*end\s*[a-zA-Z_0-9]*\s*;', re.IGNORECASE),
        "stubs": ["-- todo", "-- fixme", "return null", "raise notice"]
    }
}

INDENTATION_PROFILES: Dict[str, Dict[str, Any]] = {
    ".mojo": {
        "sig": re.compile(r'^\s*(?:fn|def)\s+([a-zA-Z_0-9]+)\s*\('),
        "stubs": ["pass", "raise notimplementederror", "todo"]
    },
    ".?": {
        "sig": re.compile(r'^\s*(?:fn|def)\s+([a-zA-Z_0-9]+)\s*\('),
        "stubs": ["pass", "raise notimplementederror", "todo"]
    },
    ".hs": {
        "sig": re.compile(r'^([a-zA-Z_0-9]+)\s+::\s+.*|^\s*([a-zA-Z_0-9]+)\s*='),
        "stubs": ["undefined", "todo", "error "]
    },
    ".elm": {
        "sig": re.compile(r'^([a-zA-Z_0-9]+)\s+::\s+.*|^\s*([a-zA-Z_0-9]+)\s*='),
        "stubs": ["undefined", "todo", "error "]
    }
}

# ==============================================================================
# COMPONENT PARSER ARCHITECTURES (CLEAN, FLAT DRIVERS)
# ==============================================================================

class BaseLanguageParser(ABC):
    @abstractmethod
    def parse(self, file_path: str, source: str) -> Dict[str, Any]:
        pass


class PythonASTParser(BaseLanguageParser):
    """AST analyzer enforcing strict compliance boundaries for native Python files."""
    
    def _is_mock(self, body: List[ast.stmt]) -> bool:
        if not body: 
            return True
        first = body[0]
        # Skip top docstrings cleanly
        actual_statements = body[1:] if (isinstance(first, ast.Expr) and isinstance(first.value, ast.Constant) and isinstance(first.value.value, str)) else body
        if len(actual_statements) == 1:
            node = actual_statements[0]
            if isinstance(node, (ast.Pass, ast.Break, ast.Continue)): return True
            if isinstance(node, ast.Raise) and isinstance(node.exc, ast.Name) and node.exc.id == "NotImplementedError": return True
            if isinstance(node, ast.Expr) and isinstance(node.value, ast.Constant) and isinstance(node.value.value, str): return True
        return False

    def parse(self, file_path: str, source: str) -> Dict[str, Any]:
        tree = ast.parse(source, filename=file_path)
        functions, classes, imports = {}, set(), set()
        
        for node in ast.walk(tree):
            if isinstance(node, ast.ClassDef):
                classes.add(node.name)
            elif isinstance(node, ast.Import):
                for a in node.names: imports.add(f"import {a.name}")
            elif isinstance(node, ast.ImportFrom):
                imports.add(f"from {node.module or ''} import {', '.join(a.name for a in node.names)}")
            elif isinstance(node, ast.FunctionDef):
                args = {arg.arg: ast.unparse(arg.annotation).strip() if arg.annotation else "None" for arg in node.args.args}
                decs = {ast.unparse(dec).strip().split('(')[0] for dec in node.decorator_list}
                span = (node.end_lineno - node.lineno + 1) if hasattr(node, "end_lineno") else 1
                functions[node.name] = {
                    "args": args, "returns": ast.unparse(node.returns).strip() if node.returns else "None",
                    "decorators": list(decs), "lines": span, "is_mock": self._is_mock(node.body)
                }
        return {"classes": list(classes), "functions": functions, "imports": list(imports), "total_lines": len(source.splitlines())}


class BraceLanguageParser(BaseLanguageParser):
    """Flat lexical tracker using profile case arrays rather than nested conditional ladders."""
    
    def __init__(self, ext: str):
        self.profile = BRACE_PROFILES.get(ext, C_STYLE_DEFAULT)

    def parse(self, file_path: str, source: str) -> Dict[str, Any]:
        lines = source.splitlines()
        functions, classes, imports = {}, set(), set()
        brace_depth = 0
        active_fn, fn_start = None, 0
        body_lines, pending_decs = [], []

        for idx, line in enumerate(lines, start=1):
            stripped = line.strip()
            if not stripped: continue

            # Outer-scope tracking (Signatures, imports, decorators)
            if brace_depth == 0:
                if self.profile["imp"].match(line): 
                    imports.add(stripped)
                    continue
                m_dec = self.profile["dec"].match(line)
                if m_dec: 
                    pending_decs.append(m_dec.group(1))
                    continue
                m_cls = self.profile["cls"].match(line)
                if m_cls: 
                    classes.add(m_cls.group(1))
                
                m_fn = self.profile["fn"].search(line)
                if m_fn and not any(k in stripped for k in {"if", "for", "while", "switch", "catch", "return"}):
                    name = m_fn.group(1) or (m_fn.group(2) if len(m_fn.groups()) > 1 else None)
                    if name and name not in {"class", "struct", "function", "return", "import", "fn", "fun"}:
                        active_fn, fn_start, body_lines = name, idx, []

            # Character level scope processing
            for char in stripped:
                if char == '{': 
                    brace_depth += 1
                elif char == '}': 
                    brace_depth -= 1
                    
                if brace_depth == 0 and active_fn:
                    body_txt = "\n".join(body_lines).lower()
                    is_mock = len(body_lines) <= 2 or any(s in body_txt for s in ["todo", "panic", "notimplemented", "throw ", "return null", "exit", ":"])
                    functions[active_fn] = {"args": {}, "returns": "Inferred", "decorators": pending_decs.copy(), "lines": idx - fn_start + 1, "is_mock": is_mock}
                    active_fn, pending_decs = None, []
                    break

            if brace_depth > 0 and active_fn:
                body_lines.append(stripped)

        return {"classes": list(classes), "functions": functions, "imports": list(imports), "total_lines": len(lines)}


class BlockEndLanguageParser(BaseLanguageParser):
    """Monolithic logic parsing loop tracking keyword-delimited code architectures."""
    
    def __init__(self, ext: str):
        self.profile = BLOCK_END_PROFILES[ext]

    def parse(self, file_path: str, source: str) -> Dict[str, Any]:
        lines = source.splitlines()
        functions = {}
        scope_depth = 0
        active_fn, fn_start, body_lines = None, 0, []

        for idx, line in enumerate(lines, start=1):
            stripped = line.strip()
            if not stripped or stripped.startswith(('#', '--', '//', "'", ';')): continue

            # Guard clause: Locate and step into function tracking bounds
            if scope_depth == 0:
                m_fn = self.profile["start"].match(line)
                if m_fn:
                    active_fn, fn_start, scope_depth, body_lines = m_fn.group(1), idx, 1, []
                continue

            # In-scope execution processing
            if self.profile["inc"].search(line):
                scope_depth += 1
                
            if self.profile["end"].match(stripped):
                scope_depth -= 1
                if scope_depth == 0 and active_fn:
                    body_txt = "\n".join(body_lines).lower()
                    is_mock = len(body_lines) <= 2 or any(s in body_txt for s in ["todo", "panic", "notimplemented", "nothing", "nil", "raise", "wscript.quit"])
                    functions[active_fn] = {"args": {}, "returns": "Inferred", "decorators": [], "lines": idx - fn_start + 1, "is_mock": is_mock}
                    active_fn = None
                continue

            if active_fn:
                body_lines.append(stripped)

        return {"classes": [], "functions": functions, "imports": [], "total_lines": len(lines)}


class SequentialScriptParser(BaseLanguageParser):
    """Label and linear declarative parser for scripting layouts (Batch/SQL)."""
    
    def __init__(self, ext: str):
        self.profile = SEQUENTIAL_PROFILES[ext]

    def parse(self, file_path: str, source: str) -> Dict[str, Any]:
        lines = source.splitlines()
        functions = {}
        active_routine, routine_start, body_lines = None, 0, []

        for idx, line in enumerate(lines, start=1):
            stripped = line.strip()
            if not stripped: continue

            m_rot = self.profile["start"].match(line) if ".bat" in file_path else self.profile["start"].search(line)
            if m_rot:
                if active_routine:
                    body_txt = "\n".join(body_lines).lower()
                    is_mock = len(body_lines) <= 1 or any(mk in body_txt for mk in self.profile["stubs"])
                    functions[active_routine] = {"args": {}, "returns": "Routine", "decorators": [], "lines": idx - routine_start, "is_mock": is_mock}
                active_routine, routine_start, body_lines = m_rot.group(1), idx, []
                continue

            if active_routine:
                body_lines.append(stripped)
                if self.profile["end"].match(stripped):
                    body_txt = "\n".join(body_lines).lower()
                    is_mock = len(body_lines) <= 2 or any(mk in body_txt for mk in self.profile["stubs"])
                    functions[active_routine] = {"args": {}, "returns": "Routine", "decorators": [], "lines": idx - routine_start + 1, "is_mock": is_mock}
                    active_routine = None

        if active_routine:
            body_txt = "\n".join(body_lines).lower()
            functions[active_routine] = {"args": {}, "returns": "Routine", "decorators": [], "lines": len(lines) - routine_start + 1, "is_mock": len(body_lines) <= 1 or any(mk in body_txt for mk in self.profile["stubs"])}

        return {"classes": [], "functions": functions, "imports": [], "total_lines": len(lines)}


class LineIndentationParser(BaseLanguageParser):
    """Layout signature parsing module capturing indentation-sensitive language architectures."""
    
    def __init__(self, ext: str):
        self.profile = INDENTATION_PROFILES[ext]

    def parse(self, file_path: str, source: str) -> Dict[str, Any]:
        lines = source.splitlines()
        functions = {}
        active_name, fn_start, body_lines = None, 0, []

        for idx, line in enumerate(lines, start=1):
            if not line.strip(): continue
            m = self.profile["sig"].match(line)
            if m:
                name = m.group(1) or (m.group(2) if len(m.groups()) > 1 else None)
                if name and name != active_name:
                    if active_name:
                        body_txt = "\n".join(body_lines).lower()
                        functions[active_name] = {"args": {}, "returns": "Declarative", "decorators": [], "lines": idx - fn_start, "is_mock": any(ms in body_txt for ms in self.profile["stubs"])}
                    active_name, fn_start, body_lines = name, idx, []
            if active_name:
                body_lines.append(line)

        if active_name:
            body_txt = "\n".join(body_lines).lower()
            functions[active_name] = {"args": {}, "returns": "Declarative", "decorators": [], "lines": len(lines) - fn_start + 1, "is_mock": any(ms in body_txt for ms in self.profile["stubs"])}

        return {"classes": [], "functions": functions, "imports": [], "total_lines": len(lines)}

# ==============================================================================
# WORKSPACE ROUTING MANAGEMENT
# ==============================================================================

class WorkspaceRegistry:
    @staticmethod
    def get_parser(file_path: str) -> Optional[BaseLanguageParser]:
        _, ext = os.path.splitext(file_path.lower())
        if ext == ".py": return PythonASTParser()
        if ext in INDENTATION_PROFILES: return LineIndentationParser(ext)
        if ext in BLOCK_END_PROFILES: return BlockEndLanguageParser(ext)
        if ext in SEQUENTIAL_PROFILES: return SequentialScriptParser(ext)
        
        # Explicit or generic fallback for curly-brace structures
        if ext in BRACE_PROFILES or ext in {".js", ".jsx", ".ts", ".tsx", ".c", ".cpp", ".h", ".hpp", ".java", ".cs", ".ec", ".eh", ".pike", ".pmod", ".kt", ".kts", ".swift", ".dart", ".r"}:
            return BraceLanguageParser(ext)
        return None

    @classmethod
    def load_state(cls, root_path: str) -> Dict[str, Any]:
        target = os.path.join(root_path, STATE_FILE_NAME) if os.path.isdir(root_path) else os.path.join(os.path.dirname(root_path), STATE_FILE_NAME)
        if os.path.exists(target):
            try:
                with open(target, "r", encoding="utf-8") as f: return json.load(f)
            except: pass
        return {}

    @classmethod
    def save_state(cls, root_path: str, state: Dict[str, Any]) -> None:
        target = os.path.join(root_path, STATE_FILE_NAME) if os.path.isdir(root_path) else os.path.join(os.path.dirname(root_path), STATE_FILE_NAME)
        try:
            with open(target, "w", encoding="utf-8") as f: json.dump(state, f, indent=2)
        except: pass


def _resolve_workspace_files(target_path: str) -> List[str]:
    abs_path = os.path.abspath(target_path)
    if os.path.isfile(abs_path):
        return [abs_path] if WorkspaceRegistry.get_parser(abs_path) else []
    resolved = []
    for root, dirs, files in os.walk(abs_path):
        dirs[:] = [d for d in dirs if d not in GLOBAL_IGNORE_DIRS]
        for file in files:
            fp = os.path.join(root, file)
            if WorkspaceRegistry.get_parser(fp): resolved.append(fp)
    return resolved

# ==============================================================================
# EXPOSED PROTOCOL TOOLS
# ==============================================================================

@mcp.tool()
async def snapshot_baseline(target_path: str) -> str:
    """Snapshots structural footprints across all matching modules inside the designated target directory path."""
    base_dir = os.path.abspath(target_path) if os.path.isdir(target_path) else os.path.dirname(os.path.abspath(target_path))
    files = _resolve_workspace_files(target_path)
    if not files: return f"? BASELINE_FAILURE: No supported source profiles matched under: {target_path}"

    curr_reg = WorkspaceRegistry.load_state(base_dir)
    cataloged = 0
    for fp in files:
        parser = WorkspaceRegistry.get_parser(fp)
        if not parser: continue
        try:
            with open(fp, "r", encoding="utf-8", errors="ignore") as f: content = f.read()
            curr_reg[fp] = parser.parse(fp, content)
            cataloged += 1
        except Exception as e:
            return f"? BASELINE_FAILURE: Parsing breakdown in '{os.path.basename(fp)}': {str(e)}"

    WorkspaceRegistry.save_state(base_dir, curr_reg)
    return f"? BASELINE_LOCKED: High-fidelity profiles tracked across {cataloged} repository points."


@mcp.tool()
async def audit_revision(target_path: str) -> str:
    """Audits modified workspace targets against baseline criteria to block truncated logic streams or laziness traps."""
    base_dir = os.path.abspath(target_path) if os.path.isdir(target_path) else os.path.dirname(os.path.abspath(target_path))
    registry = WorkspaceRegistry.load_state(base_dir)
    if not registry: return "? AUDIT_FAILED: Metric profile layer empty. Run baseline snapshot routines."

    files = _resolve_workspace_files(target_path)
    drift_errors = []

    for tracked_file in list(registry.keys()):
        if tracked_file.startswith(base_dir) and not os.path.exists(tracked_file):
            drift_errors.append(f"Module Dropped: Baseline module file '{os.path.basename(tracked_file)}' was deleted.")

    for fp in files:
        if fp not in registry: continue
        baseline, filename = registry[fp], os.path.basename(fp)
        parser = WorkspaceRegistry.get_parser(fp)
        if not parser: continue

        try:
            with open(fp, "r", encoding="utf-8", errors="ignore") as f: content = f.read()
            current = parser.parse(fp, content)
        except Exception as e:
            drift_errors.append(f"Syntax Error [{filename}]: Parsing crash: {str(e)}")
            continue

        missing_imports = set(baseline.get("imports", [])) - set(current.get("imports", []))
        if missing_imports: drift_errors.append(f"[{filename}] Missing Dependencies: {list(missing_imports)}")

        missing_classes = set(baseline.get("classes", [])) - set(current.get("classes", []))
        if missing_classes: drift_errors.append(f"[{filename}] Objects/Classes Deleted: {list(missing_classes)}")

        for fn_name, b_meta in baseline.get("functions", {}).items():
            if fn_name not in current.get("functions", {}):
                drift_errors.append(f"[{filename}] Logic Block Dropped: Routine block '{fn_name}' missing.")
                continue

            c_meta = current["functions"][fn_name]
            if set(b_meta.get("decorators", [])) - set(c_meta.get("decorators", [])):
                drift_errors.append(f"[{filename}] Stripped Framework Annotation on '{fn_name}'")
            if c_meta.get("is_mock") and not b_meta.get("is_mock"):
                drift_errors.append(f"? [{filename}] Laziness Trap Blocked in '{fn_name}': Logic substituted with stub.")
            if b_meta.get("lines", 0) > 4 and c_meta.get("lines", 0) <= (b_meta.get("lines", 0) * 0.5):
                drift_errors.append(f"? [{filename}] Truncation Trap Blocked in '{fn_name}': Context block collapsed >50%.")

    if drift_errors:
        return f"? CRITICAL_COMPLETENESS_DRIFT: Logic degradation intercepted!\n" + "\n".join(f" - {err}" for err in drift_errors)
    return "? REVISION_PASSED: Multi-language layout boundaries remain complete and intact."


@mcp.tool()
async def run_completeness_diagnostic() -> str:
    """Runs verification pipelines simulating code erosion in script engines and structural blocks."""
    f_bat, f_lua = "drift_test.bat", "drift_test.lua"
    bat_v1, lua_v1 = ":build_array\necho Processing...\ngoto :eof\n", "function calculate_matrix()\n  return 1\nend\n"
    try:
        with open(f_bat, "w") as f: f.write(bat_v1)
        with open(f_lua, "w") as f: f.write(lua_v1)
        await snapshot_baseline(".")
        
        with open(f_bat, "w") as f: f.write(":build_array\nrem TODO\n")
        with open(f_lua, "w") as f: f.write("function calculate_matrix()\n  -- todo\nend\n")
        
        res = await audit_revision(".")
        if "Laziness Trap" in res: return "? DIAGNOSTIC_PASSED: Flattened polymorphic profile framework trapped all code erosion simulation vectors."
        return f"? DIAGNOSTIC_FAILED: Structural checkpoints bypassed. Output:\n{res}"
    finally:
        for p in [f_bat, f_lua, STATE_FILE_NAME]:
            if os.path.exists(p): os.remove(p)

if __name__ == "__main__":
    mcp.run(transport="stdio")