#!/usr/bin/env python3
 """Generate a synthetic vault for timing cce-vault (see CLAUDE.md, Performance).
 
 usage: bench/gen-vault.py DIR [NOTES]    (default 5000 notes, ~40 MB)
 
 Each note has frontmatter tags and an alias, 20 random [[Note N]] links, an
 inline tag, twelve paragraphs of filler, three tasks and a fenced code block
 holding a link that must NOT be indexed. Seeded, so runs are comparable.
 """
 import os, random, sys
 
 root = sys.argv[1]
 n = int(sys.argv[2]) if len(sys.argv) > 2 else 5000
 random.seed(1)
 words = ("alpha beta gamma delta rust wayland vulkan note idea project meeting "
          "design canvas graph index link task daily review plan").split()
 for i in range(n):
     folder = f"f{i % 40}"
     os.makedirs(f"{root}/{folder}", exist_ok=True)
     links = " ".join(f"[[Note {random.randrange(n)}]]" for _ in range(20))
     body = "\n\n".join(" ".join(random.choice(words) for _ in range(60)) for _ in range(12))
     tasks = "\n".join(f"- [{random.choice(' x')}] {random.choice(words)} {random.choice(words)}"
                       for _ in range(3))
     with open(f"{root}/{folder}/Note {i}.md", "w") as f:
         f.write(f"---\ntags: [{random.choice(words)}]\naliases: [N{i}]\n---\n# Note {i}\n{links}\n"
                 f"#{random.choice(words)}\n{body}\n{tasks}\n```\n[[NotALink]]\n```\n")