refactor: 标准化Go模块结构,统一library+cmd/模式

- Huffman/Arithmetic/RLE Go模块重构为library+huffman/cmd/main.go
- 所有Go模块现在使用一致的library+cmd/目录结构
- 删除specs/api/和specs/db/占位目录
- 更新AGENTS.md移除对specs/api的引用
- 更新Makefile和CI工作流使用新的cmd/路径
- 更新测试文件使用新的包结构

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

Author: LessUp

.github/workflows/ci.yml

@@ -194,10 +194,10 @@ jobs:
           (cd algorithms/rle/cpp && g++ -std=c++17 -O2 main.cpp -o rle_cpp)
 
           # Go
-          (cd algorithms/huffman/go && go build -o huffman_go .)
-          (cd algorithms/arithmetic/go && go build -o arithmetic_go .)
+          (cd algorithms/huffman/go && go build -o huffman_go ./cmd)
+          (cd algorithms/arithmetic/go && go build -o arithmetic_go ./cmd)
           (cd algorithms/range/go && go build -o rangecoder_go ./cmd)
-          (cd algorithms/rle/go && go build -o rle_go .)
+          (cd algorithms/rle/go && go build -o rle_go ./cmd)
 
           # Rust
           (cd algorithms/huffman/rust && rustc -O main.rs -o huffman_rust)

AGENTS.md

@@ -8,8 +8,6 @@ This project strictly follows the **Spec-Driven Development (SDD)** paradigm. Al
 |-----------|---------|
 | `/specs/product/` | Product feature definitions and acceptance criteria |
 | `/specs/rfc/` | Technical design documents (architecture, patterns, decisions) |
-| `/specs/api/` | API interface definitions (OpenAPI, GraphQL schemas) |
-| `/specs/db/` | Database model definitions |
 | `/specs/testing/` | Test specifications and BDD test cases |
 | `/docs/` | User-facing documentation (VitePress documentation site) |
 
@@ -43,7 +41,7 @@ When you (AI) are asked to develop a new feature, modify an existing one, or fix
 
 ## Code Generation Rules
 
-- Any externally exposed API changes must synchronously update the relevant spec files in `/specs/api/`.
+- Any changes to binary file formats, CLI interfaces, or error handling must synchronously update the relevant spec files in `/specs/rfc/`.
 - If uncertain about technical details, consult the architecture conventions in `/specs/rfc/`. Do not invent design patterns on your own.
 - All error messages must be in English.
 - Follow language-specific conventions:

Makefile

@@ -9,12 +9,12 @@ build: build-huffman build-arithmetic build-range build-rle
 
 build-huffman:
 	g++ -std=c++17 -O2 -Wall -Wextra -Werror algorithms/huffman/cpp/main.cpp -o algorithms/huffman/cpp/huffman_cpp
-	go build -o algorithms/huffman/go/huffman_go ./algorithms/huffman/go
+	go build -o algorithms/huffman/go/huffman_go ./algorithms/huffman/go/cmd
 	rustc -O algorithms/huffman/rust/main.rs -o algorithms/huffman/rust/huffman_rust
 
 build-arithmetic:
 	g++ -std=c++17 -O2 -Wall -Wextra -Werror algorithms/arithmetic/cpp/main.cpp -o algorithms/arithmetic/cpp/arithmetic_cpp
-	go build -o algorithms/arithmetic/go/arithmetic_go ./algorithms/arithmetic/go
+	go build -o algorithms/arithmetic/go/arithmetic_go ./algorithms/arithmetic/go/cmd
 	rustc -O algorithms/arithmetic/rust/main.rs -o algorithms/arithmetic/rust/arithmetic_rust
 
 build-range:
@@ -24,7 +24,7 @@ build-range:
 
 build-rle:
 	g++ -std=c++17 -O2 -Wall -Wextra -Werror algorithms/rle/cpp/main.cpp -o algorithms/rle/cpp/rle_cpp
-	go build -o algorithms/rle/go/rle_go ./algorithms/rle/go
+	go build -o algorithms/rle/go/rle_go ./algorithms/rle/go/cmd
 	rustc -O algorithms/rle/rust/main.rs -o algorithms/rle/rust/rle_rust
 
 # ── Test ───────────────────────────────────────────────────────────────────
@@ -34,16 +34,16 @@ test: test-data \
       test-huffman-rust test-arithmetic-rust test-range-rust test-rle-rust
 
 test-huffman-go:
-	go test ./algorithms/huffman/go/...
+	go test ./algorithms/huffman/go/... ./algorithms/huffman/go/cmd/...
 
 test-arithmetic-go:
-	go test ./algorithms/arithmetic/go/...
+	go test ./algorithms/arithmetic/go/... ./algorithms/arithmetic/go/cmd/...
 
 test-range-go:
 	go test ./algorithms/range/go/...
 
 test-rle-go:
-	go test ./algorithms/rle/go/...
+	go test ./algorithms/rle/go/... ./algorithms/rle/go/cmd/...
 
 test-huffman-rust:
 	rustc --test algorithms/huffman/rust/main.rs -o algorithms/huffman/rust/huffman_rust_test