fix: spark task create command bugs

Fix the following issues in spark task create command:

1. Makefile - Add clean dependency to build target and ldflags for optimized builds

2. Task Create - Filename normalization:
   - Convert spaces to dashes automatically
   - Convert underscores to dashes
   - Example: 'make script issue' -> 'make-script-issue.md'

3. Task Create - Template and content handling:
   - Properly read example-feature.md as template
   - Insert --content parameter into ## Description section
   - Support both English and Chinese section headers

4. Task Delete/Get - Consistent filename normalization

Tests:
- Add tests for filename with spaces/underscores
- Add tests for duplicate detection with normalized names
- Add tests for Chinese section header support

Refs: #5

Author: qdriven

AGENTS.md

@@ -327,12 +327,17 @@ spark task sync my-task --work-path ./workspace
 |--------|------|
 | `init` | 初始化任务目录结构 |
 | `list` | 列出所有任务和特性 |
-| `create` | 创建新特性文件 |
+| `create` | 创建新特性文件（文件名空格自动转换为 `-`）|
 | `delete` | 删除特性文件 |
 | `impl` | 实现特性（使用 kimi CLI）|
 | `dispatch` | 分发任务到新目录 |
 | `sync` | 同步任务回任务目录 |
 
+**特性文件创建说明**:
+- 文件名中的空格和下划线会自动转换为 `-`
+- `--content` 参数的内容会写入 `## 描述` section
+- 如果存在 `example-feature.md`，会将其作为模板
+
 **任务目录结构**:
 ```
 tasks/

Makefile

@@ -20,8 +20,8 @@ endif
 
 all: build test
 
-build:
-	$(GO) build -o $(BINARY_NAME)$(BINARY_EXT) main.go
+build: clean
+	$(GO) build -ldflags="-s -w" -o $(BINARY_NAME)$(BINARY_EXT) main.go
 	@echo "Installing $(BINARY_NAME) to $(INSTALL_DIR)..."
 	@mkdir -p $(INSTALL_DIR)
 	@cp $(BINARY_NAME)$(BINARY_EXT) $(INSTALL_DIR)/$(BINARY_NAME)

README.md

@@ -81,10 +81,11 @@ spark task init
 # 列出所有任务和特性
 spark task list
 
-# 创建新特性文件
+# 创建新特性文件（文件名中的空格会自动转换为 -）
 spark task create my-feature
+spark task create "my feature name"  # 将创建 my-feature-name.md
 
-# 创建带内容的特性文件
+# 创建带内容的特性文件（内容将写入 ## 描述 section）
 spark task create my-feature --content "Custom description"
 
 # 删除特性文件

internal/task/task_feature.go

@@ -114,6 +114,11 @@ func (m *Manager) CreateFeature(name string, content string) error {
 		return fmt.Errorf("failed to create features directory: %w", err)
 	}
 
+	// Normalize filename: replace spaces with dashes
+	name = strings.TrimSpace(name)
+	name = strings.ReplaceAll(name, " ", "-")
+	name = strings.ReplaceAll(name, "_", "-")
+
 	// Add .md extension if not present
 	if !strings.HasSuffix(name, ".md") {
 		name = name + ".md"
@@ -126,13 +131,11 @@ func (m *Manager) CreateFeature(name string, content string) error {
 		return fmt.Errorf("feature file already exists: %s", name)
 	}
 
-	// If content is empty, use template
-	if content == "" {
-		content = generateFeatureTemplate(name)
-	}
+	// Generate file content from template with content parameter
+	fileContent := generateFeatureContent(name, content)
 
 	// Write file
-	if err := os.WriteFile(featurePath, []byte(content), 0644); err != nil {
+	if err := os.WriteFile(featurePath, []byte(fileContent), 0644); err != nil {
 		return fmt.Errorf("failed to create feature file: %w", err)
 	}
 
@@ -146,6 +149,11 @@ func (m *Manager) CreateFeature(name string, content string) error {
 func (m *Manager) DeleteFeature(name string, force bool) error {
 	featuresDir := filepath.Join(m.TaskDir, "tasks", "features")
 
+	// Normalize filename: replace spaces with dashes
+	name = strings.TrimSpace(name)
+	name = strings.ReplaceAll(name, " ", "-")
+	name = strings.ReplaceAll(name, "_", "-")
+
 	// Add .md extension if not present
 	if !strings.HasSuffix(name, ".md") {
 		name = name + ".md"
@@ -170,6 +178,11 @@ func (m *Manager) DeleteFeature(name string, force bool) error {
 
 // GetFeaturePath returns the full path of a feature file
 func (m *Manager) GetFeaturePath(name string) (string, error) {
+	// Normalize filename: replace spaces with dashes
+	name = strings.TrimSpace(name)
+	name = strings.ReplaceAll(name, " ", "-")
+	name = strings.ReplaceAll(name, "_", "-")
+
 	// Add .md extension if not present
 	if !strings.HasSuffix(name, ".md") {
 		name = name + ".md"
@@ -210,3 +223,101 @@ Add any additional notes here.
 *Created: %s*
 `, baseName, time.Now().Format("2006-01-02 15:04:05"))
 }
+
+// generateFeatureContent generates feature content from template and user content
+func generateFeatureContent(name string, userContent string) string {
+	// Try to read example-feature.md template
+	templateContent := ""
+	examplePath := filepath.Join("tasks", "example-feature.md")
+	
+	// Try different paths to find example-feature.md
+	possiblePaths := []string{
+		examplePath,
+		filepath.Join("..", examplePath),
+		filepath.Join(".", examplePath),
+	}
+	
+	for _, path := range possiblePaths {
+		if data, err := os.ReadFile(path); err == nil {
+			templateContent = string(data)
+			break
+		}
+	}
+	
+	// If template not found, use default
+	if templateContent == "" {
+		templateContent = DefaultExampleFeature
+	}
+	
+	// Replace title placeholder
+	baseName := strings.TrimSuffix(name, ".md")
+	baseName = strings.ReplaceAll(baseName, "-", " ")
+	baseName = strings.Title(baseName)
+	
+	content := strings.ReplaceAll(templateContent, "Example Feature", baseName)
+	content = strings.ReplaceAll(content, "# Task: Example Feature", fmt.Sprintf("# Task: %s", baseName))
+	
+	// If user provided content, replace or insert into Description section
+	if userContent != "" {
+		content = replaceDescriptionContent(content, userContent)
+	}
+	
+	// Add creation timestamp
+	content = content + fmt.Sprintf("\n---\n*Created: %s*\n", time.Now().Format("2006-01-02 15:04:05"))
+	
+	return content
+}
+
+// replaceDescriptionContent replaces the content in Description section with user content
+func replaceDescriptionContent(template string, userContent string) string {
+	// Support both English and Chinese section headers
+	// Find ## Description or ## 描述 section
+	descMarkers := []string{"## Description", "## 描述"}
+	
+	var descIndex int = -1
+	var foundMarker string
+	
+	for _, marker := range descMarkers {
+		if idx := strings.Index(template, marker); idx != -1 {
+			descIndex = idx
+			foundMarker = marker
+			break
+		}
+	}
+	
+	if descIndex == -1 {
+		// No description section found, append at end
+		return template + "\n\n## Description\n\n" + userContent + "\n"
+	}
+
+	// Find the start of content after the marker
+	contentStart := descIndex + len(foundMarker)
+	
+	// Find the next section (any line starting with ##)
+	lines := strings.Split(template[contentStart:], "\n")
+	contentEndOffset := 0
+	
+	for i, line := range lines {
+		trimmed := strings.TrimSpace(line)
+		if i > 0 && strings.HasPrefix(trimmed, "## ") {
+			// Found next section
+			for j := 0; j < i; j++ {
+				contentEndOffset += len(lines[j]) + 1 // +1 for newline
+			}
+			break
+		}
+	}
+	
+	if contentEndOffset == 0 {
+		// No next section found, use rest of template
+		contentEndOffset = len(template) - contentStart
+	}
+	
+	// Build new content
+	before := template[:contentStart] // Include marker
+	after := template[contentStart+contentEndOffset:]
+	
+	return before + "\n\n" + userContent + "\n" + after
+}
+
+