Initial commit: Dopo Goto music downloader

Python script to download complete discography from tracks.json data file.
Creates organized album directories with cover images and MP3 tracks.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+A Python script to download Dopo Goto's complete discography. Parses `tracks.json` (JavaScript object notation with unquoted keys), creates album directories, and downloads cover images and MP3 tracks with rate limiting.
+
+## Running the Script
+
+```bash
+python3 download_tracks.py
+```
+
+Dependencies: `requests` (standard library: `os`, `re`, `json`, `time`, `random`, `urllib.parse`)
+
+## Architecture
+
+**Single-file script** with these key functions:
+
+- `parse_js_object()` - Converts JS object notation to valid JSON by quoting keys, removing trailing commas, and wrapping the albums list in an array
+- `download_file()` - Streams downloads with timeout handling
+- `main()` - Orchestrates album/track iteration with skip-existing logic and random delays (0.5-3s)
+
+**Data flow:** `tracks.json` → parse → iterate albums → create `Dopo Goto - {name}/` directories → download `cover.{ext}` + track MP3s
+
+## Key Behaviors
+
+- Skips existing files (resume-friendly)
+- Extracts filenames from URLs via `urllib.parse.unquote()`
+- Cover images renamed to `cover.{ext}` based on URL extension