CLAUDE.md

@@ -1,57 +0,0 @@
-# CLAUDE.md
-
-This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
-
-## Commands
-
-```bash
-# Build
-cargo build
-
-# Run (compress a file)
-cargo run -- <input_file> [-m c]
-
-# Run (extract a file)
-cargo run -- <input_file> -m x
-
-# Run tests
-cargo test
-
-# Run a single test
-cargo test <test_name>
-
-# Run tests in a specific module
-cargo test --lib node::test
-cargo test --lib hufftree::base::test
-cargo test --lib hufftree::canonical_tests
-cargo test --lib storage::test
-```
-
-## Architecture
-
-This is a CLI tool for compressing and decompressing UTF-8 text files using canonical Huffman encoding. The compressed format uses `.z` as the file extension.
-
-**Compression pipeline** (`-m c`):
-1. `hufftree::base::get_char_frequencies` — counts character frequencies in input text
-2. `hufftree::base::Hufftree::new` — builds a Huffman tree using a min-heap (`BinaryHeap<Reverse<Node>>`)
-3. `hufftree::canonical::CanonicalHufftree::from_tree` — converts the base tree into canonical form (codes reassigned by length, then frequency order)
-4. `storage::store_tree_and_text` — writes the compressed file
-
-**Decompression pipeline** (`-m x`):
-1. `storage::read_tree_and_text` — reads the file, reconstructs `CanonicalHufftree::from_vec`, decodes the text
-
-**Binary file format** (defined in `src/storage.rs`):
-```
-4 bytes  — total bit length of the remaining data
-n×8 bytes — tree entries: (4 bytes code_length BE) + (4 bytes UTF-8 char)
-4 bytes  — delimiter (0xFFFFFFFF)
-m bytes  — Huffman-encoded text (padded to byte boundary)
-```
-
-**Key types:**
-- `node::Node` — binary tree node with optional `char` and frequency; ordered by frequency
-- `hufftree::base::Hufftree` — wraps the root `Node` and the character list; used only during compression
-- `hufftree::canonical::CanonicalHufftree` — bidirectional map (`BiMap<char, BitVec>`) for encode/decode; also stores `storage_char_codes: Vec<(char, u32)>` for serialization
-- `cli::Args` / `cli::Mode` — Clap-derived CLI args; mode defaults to `C` (compress)
-
-**Dependencies:** `bit-vec` for `BitVec`, `bimap` for bidirectional char↔code lookup, `clap` for CLI parsing.