chore: add venv setup script and update CLAUDE.md for optional deps

- setup_env.sh creates ~/luminos-env venv and installs all AI packages
- CLAUDE.md updated to reflect the new dependency model: base tool is
  zero-dep, --ai requires packages installed via venv
- Documents the capabilities module and updated ai.py architecture

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jeff Smith 2026-03-30 12:14:13 -06:00
parent 0412a8c0cb
commit da387289f3
2 changed files with 102 additions and 0 deletions

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# CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
## Running Luminos
```bash
# Basic scan
python3 luminos.py <target_directory>
# With AI analysis (requires ANTHROPIC_API_KEY env var)
python3 luminos.py --ai <target_directory>
# JSON output to file
python3 luminos.py --json -o report.json <target_directory>
# Watch mode (re-scans every 30s, shows diffs)
python3 luminos.py --watch <target_directory>
```
There is no build step, no test suite, and no linter configured.
## Architecture
The base tool is a zero-dependency Python CLI (stdlib only). The `--ai` flag requires optional pip packages installed in a venv. The entry point `luminos.py` defines `scan()` which orchestrates all analysis modules and returns a report dict, and `main()` which handles argument parsing and output routing.
Each analysis capability lives in its own module under `luminos_lib/`:
| Module | Purpose | External commands used |
|---|---|---|
| `tree.py` | Recursive directory tree with file sizes | None (uses `os`) |
| `filetypes.py` | Classifies files into 7 categories (source, config, data, media, document, archive, unknown) | `file --brief` |
| `code.py` | Language detection, LOC counting, large file flagging | `wc -l` |
| `recency.py` | Finds N most recently modified files | `find -printf` |
| `disk.py` | Per-directory disk usage | `du -b` |
| `report.py` | Formats the report dict as human-readable terminal output | None |
| `ai.py` | Multi-pass agentic directory analysis via Claude API (streaming, token counting, caching) | Requires `anthropic`, `tree-sitter`, `python-magic` |
| `capabilities.py` | Optional dependency detection, cache cleanup | None |
| `watch.py` | Continuous monitoring loop with snapshot diffing | None (re-uses `filetypes.classify_files`) |
**Data flow:** `scan()` builds a report dict → optional `analyze_directory()` adds AI fields → `format_report()` or `json.dumps()` produces output.
## Optional Dependencies (--ai flag only)
The base tool requires zero pip packages. The `--ai` flag requires:
```bash
# One-time setup
bash setup_env.sh
# Or manually:
python3 -m venv ~/luminos-env
source ~/luminos-env/bin/activate
pip install anthropic tree-sitter tree-sitter-python \
tree-sitter-javascript tree-sitter-rust \
tree-sitter-go python-magic
```
Check current status with `python3 luminos.py --install-extras`.
Always activate the venv before using `--ai`:
```bash
source ~/luminos-env/bin/activate
python3 luminos.py --ai <target_directory>
```
## Key Constraints
- **Base tool: no pip dependencies.** The base scan (tree, file types, code, disk, recency, report, watch) uses only stdlib and GNU coreutils. It must always work on a bare Python 3 install.
- **AI deps are gated.** The `anthropic`, `tree-sitter`, and `python-magic` packages are imported lazily, only when `--ai` is used. Missing packages produce a clear error with the install command.
- **Subprocess for OS tools.** Line counting, file detection, disk usage, and recency all shell out to GNU coreutils. Do not reimplement these in pure Python.
- **AI is opt-in.** The `--ai` flag gates all Claude API calls. Without it (or without `ANTHROPIC_API_KEY`), the tool must produce a complete report with no errors.
- **Graceful degradation everywhere.** Permission denied, subprocess timeouts, missing API key — all handled without crashing.

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#!/usr/bin/env bash
set -euo pipefail
VENV_DIR="$HOME/luminos-env"
if [ -d "$VENV_DIR" ]; then
echo "venv already exists at $VENV_DIR"
else
echo "Creating venv at $VENV_DIR..."
python3 -m venv "$VENV_DIR"
fi
echo "Activating venv..."
source "$VENV_DIR/bin/activate"
echo "Installing packages..."
pip install anthropic tree-sitter tree-sitter-python \
tree-sitter-javascript tree-sitter-rust \
tree-sitter-go python-magic
echo ""
echo "Done. To activate the venv in future sessions:"
echo ""
echo " source ~/luminos-env/bin/activate"
echo ""
echo "Then run luminos as usual:"
echo ""
echo " python3 luminos.py --ai <target>"
echo ""