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awesome-copilot/skills/mini-context-graph/scripts/tools/wiki_store.py
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Nixon Kurian 746ba555b6 add mini-context-graph skill (#1580)
* add mini-context-graph skill

* remove pycache files

* filename case update to SKILL.md

* update readme
2026-05-05 14:04:37 +10:00

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Python

"""
wiki_store.py — Manages the persistent wiki layer.
Inspired by Karpathy's LLM Wiki pattern: the wiki is a directory of LLM-generated
markdown pages that the agent writes and maintains. This module provides the
deterministic file I/O and index/log management so the agent can focus on
reasoning, not bookkeeping.
Wiki structure (relative to project root):
wiki/
index.md ← content-oriented catalog of all pages
log.md ← chronological append-only operation log
entities/ ← one page per entity (person, concept, system, etc.)
summaries/ ← source document summary pages
topics/ ← cross-cutting synthesis and topic pages
The agent WRITES pages; this module handles the filesystem + index + log.
"""
from __future__ import annotations
import os
import re
import sys
from datetime import datetime, timezone
from pathlib import Path
sys.path.insert(0, str(Path(__file__).parent.parent))
import config
_WIKI_DIR = Path(os.environ.get("MINI_CONTEXT_GRAPH_WIKI_DIR", str(config.WIKI_DIR)))
_INDEX_FILE = _WIKI_DIR / "index.md"
_LOG_FILE = _WIKI_DIR / "log.md"
_CATEGORY_DIRS = {
"entity": _WIKI_DIR / "entities",
"summary": _WIKI_DIR / "summaries",
"topic": _WIKI_DIR / "topics",
}
# ---------------------------------------------------------------------------
# Internal helpers
# ---------------------------------------------------------------------------
def _ensure_dirs() -> None:
_WIKI_DIR.mkdir(parents=True, exist_ok=True)
for d in _CATEGORY_DIRS.values():
d.mkdir(parents=True, exist_ok=True)
def _now_iso() -> str:
return datetime.now(timezone.utc).strftime("%Y-%m-%d")
def _slug(title: str) -> str:
"""Convert a title to a filesystem-safe slug."""
slug = title.lower().strip()
slug = re.sub(r"[^a-z0-9]+", "-", slug)
return slug.strip("-")
def _page_path(category: str, slug: str) -> Path:
base = _CATEGORY_DIRS.get(category, _WIKI_DIR)
return base / f"{slug}.md"
# ---------------------------------------------------------------------------
# Index management
# ---------------------------------------------------------------------------
def _load_index() -> list[dict]:
"""Parse index.md into a list of entry dicts."""
if not _INDEX_FILE.exists():
return []
entries = []
for line in _INDEX_FILE.read_text().splitlines():
# Expected table row: | [[slug]] | category | summary | date |
if line.startswith("| [["):
parts = [p.strip() for p in line.split("|") if p.strip()]
if len(parts) >= 3:
link = parts[0] # [[slug]]
category = parts[1] if len(parts) > 1 else ""
summary = parts[2] if len(parts) > 2 else ""
date = parts[3] if len(parts) > 3 else ""
slug = re.sub(r"\[\[|\]\]", "", link)
entries.append({
"slug": slug,
"category": category,
"summary": summary,
"date": date,
})
return entries
def _save_index(entries: list[dict]) -> None:
"""Rewrite index.md from the entries list."""
_ensure_dirs()
lines = [
"# Wiki Index\n",
"_Auto-managed by wiki_store. Do not edit the table manually._\n\n",
"| Page | Category | Summary | Date |\n",
"|------|----------|---------|------|\n",
]
for e in entries:
lines.append(
f"| [[{e['slug']}]] | {e['category']} | {e['summary']} | {e['date']} |\n"
)
_INDEX_FILE.write_text("".join(lines))
def _append_log(operation: str, detail: str) -> None:
"""Append a timestamped entry to log.md."""
_ensure_dirs()
timestamp = datetime.now(timezone.utc).strftime("%Y-%m-%d")
entry = f"\n## [{timestamp}] {operation} | {detail}\n"
with open(_LOG_FILE, "a") as f:
f.write(entry)
# ---------------------------------------------------------------------------
# Public API
# ---------------------------------------------------------------------------
def write_page(
category: str,
title: str,
content: str,
summary: str = "",
) -> str:
"""
Write (or overwrite) a wiki page.
The agent provides the full markdown content. This method handles:
- Writes the .md file to the appropriate category subfolder.
- Updates index.md with a one-line entry.
- Appends an entry to log.md.
Args:
category: One of "entity", "summary", "topic".
title: Human-readable page title (used for slug + index).
content: Full markdown content the agent wrote.
summary: One-line summary for the index (optional; auto-extracted if empty).
Returns:
Relative path from wiki root (e.g. "entities/memory-leak.md").
"""
_ensure_dirs()
slug = _slug(title)
path = _page_path(category, slug)
# Auto-extract first non-heading, non-empty line as summary if not provided
if not summary:
for line in content.splitlines():
stripped = line.strip()
if stripped and not stripped.startswith("#"):
summary = stripped[:100]
break
path.write_text(content)
# Update index
entries = _load_index()
existing = next((e for e in entries if e["slug"] == slug), None)
if existing:
existing["summary"] = summary
existing["date"] = _now_iso()
else:
entries.append({
"slug": slug,
"category": category,
"summary": summary,
"date": _now_iso(),
})
_save_index(entries)
_append_log("write", title)
return str(path.relative_to(_WIKI_DIR))
def read_page(category: str, title: str) -> str | None:
"""Read a wiki page's content. Returns None if not found."""
slug = _slug(title)
path = _page_path(category, slug)
if not path.exists():
return None
return path.read_text()
def read_page_by_slug(slug: str) -> str | None:
"""Read a wiki page by slug, searching across all categories."""
for d in list(_CATEGORY_DIRS.values()) + [_WIKI_DIR]:
path = d / f"{slug}.md"
if path.exists():
return path.read_text()
return None
def search_wiki(query: str) -> list[dict]:
"""
Simple keyword search over all wiki pages.
Returns list of {slug, category, path, snippet} sorted by relevance.
"""
query_tokens = set(re.findall(r"[a-z0-9]+", query.lower()))
if not query_tokens:
return []
results = []
for category, base_dir in _CATEGORY_DIRS.items():
if not base_dir.exists():
continue
for page_path in base_dir.glob("*.md"):
content = page_path.read_text().lower()
content_tokens = set(re.findall(r"[a-z0-9]+", content))
overlap = len(query_tokens & content_tokens)
if overlap > 0:
# Extract a short snippet around first match
first_token = next(iter(query_tokens & content_tokens), "")
idx = content.find(first_token)
snippet = content[max(0, idx - 30):idx + 80].replace("\n", " ").strip()
results.append({
"slug": page_path.stem,
"category": category,
"path": str(page_path.relative_to(_WIKI_DIR)),
"score": overlap,
"snippet": snippet,
})
results.sort(key=lambda x: x["score"], reverse=True)
return results
def list_pages(category: str | None = None) -> list[dict]:
"""List all wiki pages, optionally filtered by category."""
entries = _load_index()
if category:
return [e for e in entries if e["category"] == category]
return entries
def get_log(last_n: int = 20) -> list[str]:
"""Return the last N log entries from log.md."""
if not _LOG_FILE.exists():
return []
lines = _LOG_FILE.read_text().splitlines()
entries = [l for l in lines if l.startswith("## [")]
return entries[-last_n:]
def lint_wiki() -> dict:
"""
Health-check the wiki as described in Karpathy's LLM Wiki pattern.
Checks for:
- Orphan pages (in directory but not in index)
- Missing pages (in index but file deleted)
- Broken wikilinks ([[slug]] pointing to non-existent file)
- Pages with no wikilinks (isolated pages)
Returns:
{
"orphan_pages": [...],
"missing_pages": [...],
"broken_wikilinks": {slug: [broken_links]},
"isolated_pages": [...],
}
"""
index_entries = {e["slug"] for e in _load_index()}
file_slugs: dict[str, Path] = {}
for d in _CATEGORY_DIRS.values():
if d.exists():
for p in d.glob("*.md"):
file_slugs[p.stem] = p
orphans = [s for s in file_slugs if s not in index_entries]
missing = [s for s in index_entries if s not in file_slugs]
broken_wikilinks: dict[str, list[str]] = {}
isolated: list[str] = []
all_slugs = set(file_slugs.keys())
for slug, path in file_slugs.items():
content = path.read_text()
links = re.findall(r"\[\[([^\]]+)\]\]", content)
if not links:
isolated.append(slug)
broken = [lnk for lnk in links if _slug(lnk) not in all_slugs]
if broken:
broken_wikilinks[slug] = broken
return {
"orphan_pages": orphans,
"missing_pages": missing,
"broken_wikilinks": broken_wikilinks,
"isolated_pages": isolated,
}