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dotfiles/scripts/governance-drift-check.py
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#!/usr/bin/env python3
"""
governance-drift-check — report state claims in ~/CLAUDE.md that the substrate contradicts.
Reports. Does not correct. Detection needs no authorization; correction does
(Constitutional Constraint #1). This exists so that a stale governance document
is *visible* rather than *misleading* — Constitutional Constraint #4, honest
degradation, applied to the governance document itself.
Every check carries a POSITIVE CONTROL in the same run: an absence is not
evidence until the instrument is shown capable of detecting presence.
(Ratified 2026-07-27 as an epistemic standard, jurist Q2.)
Built 2026-07-27 on steward authorization. Exit code is always 0 — this is a
report, not a gate.
"""
import json
import os
import re
import signal
import sys
from datetime import date
from pathlib import Path
# Report cleanly when the reader closes early (`| head`), rather than tracebacking.
try:
signal.signal(signal.SIGPIPE, signal.SIG_DFL)
except (AttributeError, ValueError): # not POSIX, or not on the main thread
pass
HOME = Path.home()
CLAUDE_MD = HOME / "dotfiles" / "CLAUDE.md"
MONTHS = ("january february march april may june july august september "
"october november december").split()
findings: list[str] = []
controls: list[tuple[str, bool]] = [] # (label, passed)
def control(label: str, passed: bool) -> bool:
controls.append((label, passed))
return passed
# ---------------------------------------------------------------- load
if not CLAUDE_MD.exists():
print(f"drift-check: CANNOT RUN — {CLAUDE_MD} not found")
sys.exit(0)
text = CLAUDE_MD.read_text()
lines = text.split("\n")
# ------------------------------------------------- 1. referenced paths
# Backticked paths that look like filesystem locations.
raw = set(re.findall(r"`(~[^`\s]+|/Users/[^`]+?)`", text))
paths = {p for p in raw if ("/" in p) and not p.endswith(("`",))}
control("path-check instrument reaches the filesystem", CLAUDE_MD.exists())
for p in sorted(paths):
expanded = Path(os.path.expanduser(p.strip().rstrip(".,;")))
if not expanded.exists():
ln = next((i + 1 for i, l in enumerate(lines) if p in l), None)
findings.append(f"L{ln}: path does not resolve — {p}")
# ------------------------------------- 2. named MCP tools / servers
# Tool names the document instructs the executor to call.
tool_names = set(re.findall(r"`(kg_\w+|diary_\w+|find_tunnels|traverse)`", text))
configured: set[str] = set()
for cfg in (HOME / ".claude/settings.json", HOME / ".claude/settings.local.json",
HOME / ".claude.json", HOME / ".mcp.json"):
if cfg.exists():
try:
configured |= set((json.loads(cfg.read_text()).get("mcpServers") or {}).keys())
except Exception:
pass
control("MCP config readable (>=1 server found somewhere)", bool(configured))
if tool_names and not any("mempal" in s.lower() for s in configured):
ln = next((i + 1 for i, l in enumerate(lines) if "kg_query" in l), None)
findings.append(
f"L{ln}: {len(tool_names)} named tools do not resolve — "
f"{', '.join(sorted(tool_names))} (no mempalace MCP server configured; "
f"servers present: {sorted(configured) or 'none'})"
)
# ------------------------------------------------- 3. hooks claimed to fire
hook_claims = re.findall(r"(Stop and PreCompact hooks fire|PreCompact hook)", text)
if hook_claims:
live: set[str] = set()
for cfg in (HOME / ".claude/settings.json", HOME / ".claude/settings.local.json"):
if cfg.exists():
try:
h = json.loads(cfg.read_text()).get("hooks") or {}
live |= {k for k, v in h.items() if v}
except Exception:
pass
control("hooks config readable (>=1 hook event configured)", bool(live))
missing = [e for e in ("Stop", "PreCompact") if e not in live]
if missing:
ln = next((i + 1 for i, l in enumerate(lines) if "PreCompact" in l), None)
findings.append(
f"L{ln}: document claims these hooks fire, but they are unconfigured — "
f"{', '.join(missing)} (configured: {sorted(live) or 'none'})"
)
# ---------------------------------------------------- 4. expired horizons
today = date.today()
horizon_re = re.compile(r"through\s+(?:the\s+)?end\s+of\s+(\w+)\s+(\d{4})", re.I)
control("horizon regex matches a known-present phrase",
bool(horizon_re.search(text)) or "through end of" not in text.lower())
for i, line in enumerate(lines, 1):
for m in horizon_re.finditer(line):
month, year = m.group(1).lower(), int(m.group(2))
if month in MONTHS:
mi = MONTHS.index(month) + 1
if (year, mi) < (today.year, today.month):
findings.append(
f"L{i}: horizon expired — \"{m.group(0)}\" "
f"(elapsed {(today.year - year) * 12 + today.month - mi} months)"
)
# ------------------------------------------------ 5. structural integrity
if not text.endswith("\n"):
findings.append(f"L{len(lines)}: no terminal newline "
f"(wc -l undercounts by 1 — breaks line-referenced patches)")
for i, line in enumerate(lines, 1):
# `||` inside a line carrying table pipes = two rows fused onto one line.
# Do NOT require the line to start with `|`: the real instance (L243) began
# mid-sentence, which is exactly how the fusion hides.
if "||" in line and line.count("|") >= 3:
findings.append(f"L{i}: table rows fused on one line (`||`) — row will not render")
if re.match(r"^\s+\|", line):
findings.append(f"L{i}: table row has stray leading whitespace — breaks the table")
if re.match(r"^#{2,4} .*\s+$", line) and i < len(lines) and lines[i].startswith("#"):
findings.append(f"L{i}: empty heading stub immediately followed by a heading "
f"— orphans the section beneath it")
# --------------------------------------------- 6. doctrine-ID integrity
# Doctrine units may carry a stable id in an HTML comment: `<!-- D:memory.check-first -->`.
# Invisible in prose, parseable by tools, and IN the canonical — so there is no second
# version to drift (L110). Skills cite an id instead of paraphrasing the rule; this
# section catches a citation whose doctrine has been reworded away, and duplicate ids.
# Dormant until the first id exists; the controls below run either way, so "nothing
# reported" means "checked and clean", not "never looked".
DOCTRINE_DEF = re.compile(r"<!--\s*(D:[a-z0-9][a-z0-9-]*\.[a-z0-9][a-z0-9-]*)\s*-->")
DOCTRINE_REF = re.compile(r"\b(D:[a-z0-9][a-z0-9-]*\.[a-z0-9][a-z0-9-]*)\b")
defined: dict[str, int] = {}
for i, line in enumerate(lines, 1):
for did in DOCTRINE_DEF.findall(line):
if did in defined:
findings.append(f"L{i}: duplicate doctrine id {did} "
f"(also L{defined[did]}) — a citation cannot resolve it")
else:
defined[did] = i
# Citing surface: the skills, which are the intended consumers. Deliberately NOT
# PENDING.md — drafts there legitimately quote ids that do not exist yet.
skills_dir = HOME / ".claude" / "skills"
scanned = 0
if skills_dir.is_dir():
for f in sorted(skills_dir.rglob("*.md")):
try:
if f.stat().st_size > 200_000:
continue
body = f.read_text(errors="replace")
except OSError:
continue
scanned += 1
for ref in sorted(set(DOCTRINE_REF.findall(body))):
if ref not in defined:
findings.append(
f"{f.relative_to(HOME)}: cites doctrine id {ref}, which "
f"~/CLAUDE.md does not define — the rule was reworded or removed")
control("doctrine-id parser detects a definition",
bool(DOCTRINE_DEF.findall("x <!-- D:memory.check-first --> y")))
control("doctrine-id parser detects a citation",
DOCTRINE_REF.findall("see D:memory.check-first here") == ["D:memory.check-first"])
control("doctrine-id parser rejects a non-id",
not DOCTRINE_DEF.findall("<!-- D:nodot -->")
and not DOCTRINE_REF.findall("D:NoDot.Caps"))
control("doctrine-id citing surface is reachable",
(not skills_dir.is_dir()) or scanned > 0)
# ------------------------------------------------------------- report
failed_controls = [lbl for lbl, ok in controls if not ok]
if failed_controls:
print("⚠ drift-check: INSTRUMENT NOT VERIFIED — treat results as unestablished")
for lbl in failed_controls:
print(f" failed control: {lbl}")
print()
if not findings:
print(f"✓ governance drift-check: CLAUDE.md clean "
f"({len(controls)}/{len(controls)} controls passed, {len(paths)} paths verified)")
else:
print(f"⚑ governance drift-check: {len(findings)} claim(s) in ~/CLAUDE.md "
f"contradicted by substrate")
for f in findings:
print(f" {f}")
print("\n Correction requires [ESCALATE] (Constitutional Constraint #1). "
"This report is detection only.")
sys.exit(0)