feat: add aichat support for showcase project descriptionsv0.8.1

- Add --ai-tool flag to showcase command (default: claude)
- Support aichat as alternative to claude for generating project summaries
- When using aichat, read README.md and pipe it as input
- Update documentation and examples
- Bump version to 0.8.1

🤖 Generated with [Claude Code](https://claude.ai/code)

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

7 files changed, 94 insertions, 16 deletions

diff --git a/CLAUDE.md b/CLAUDE.md
index c9ab699..9bcd678 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -49,6 +49,9 @@ gitsyncer release create --auto --no-ai-notes
 
 # Use aichat instead of claude for AI release notes
 gitsyncer release create --auto --ai-tool aichat
+
+# Generate showcase using aichat for project descriptions
+gitsyncer showcase --ai-tool aichat
 ```
 
 Note: Release checking is enabled by default after sync operations. It will check for version tags (formats: vX.Y.Z, vX.Y, vX, X.Y.Z, X.Y, X) that don't have corresponding releases on GitHub/Codeberg and prompt for confirmation before creating them.
diff --git a/internal/cli/showcase_handler.go b/internal/cli/showcase_handler.go
index a3dfd26..929ce95 100644
--- a/internal/cli/showcase_handler.go
+++ b/internal/cli/showcase_handler.go
@@ -24,6 +24,11 @@ func HandleShowcase(cfg *config.Config, flags *Flags) int {
 	// Create showcase generator
 	generator := showcase.New(cfg, flags.WorkDir)
 	
+	// Set AI tool if specified
+	if flags.AITool != "" {
+		generator.SetAITool(flags.AITool)
+	}
+	
 	// Generate showcase with optional filter
 	if err := generator.GenerateShowcase(repoFilter, flags.Force); err != nil {
 		log.Printf("ERROR: Failed to generate showcase: %v\n", err)
diff --git a/internal/cli/showcase_only_handler.go b/internal/cli/showcase_only_handler.go
index ff2a82a..f777729 100644
--- a/internal/cli/showcase_only_handler.go
+++ b/internal/cli/showcase_only_handler.go
@@ -45,6 +45,11 @@ func HandleShowcaseOnly(cfg *config.Config, flags *Flags) int {
 	fmt.Println("\nGenerating showcase for all repositories...")
 	generator := showcase.New(cfg, flags.WorkDir)
 	
+	// Set AI tool if specified
+	if flags.AITool != "" {
+		generator.SetAITool(flags.AITool)
+	}
+	
 	// Pass empty filter to process all repos
 	if err := generator.GenerateShowcase(nil, flags.Force); err != nil {
 		log.Printf("ERROR: Failed to generate showcase: %v\n", err)
diff --git a/internal/cmd/showcase.go b/internal/cmd/showcase.go
index e184700..802cf10 100644
--- a/internal/cmd/showcase.go
+++ b/internal/cmd/showcase.go
@@ -13,14 +13,15 @@ var (
 	outputPath      string
 	outputFormat    string
 	excludePattern  string
+	showcaseAITool  string
 )
 
 var showcaseCmd = &cobra.Command{
 	Use:   "showcase",
 	Short: "Generate AI-powered project showcase",
-	Long: `Generate a comprehensive showcase of all your projects using Claude AI.
+	Long: `Generate a comprehensive showcase of all your projects using AI.
 This feature creates a formatted document with project summaries, statistics, 
-and code snippets.`,
+and code snippets. By default uses Claude, but can also use aichat.`,
 	Example: `  # Generate showcase with cached summaries
   gitsyncer showcase
   
@@ -34,11 +35,15 @@ and code snippets.`,
   gitsyncer showcase --format markdown
   
   # Exclude certain repositories
-  gitsyncer showcase --exclude "test-.*"`,
+  gitsyncer showcase --exclude "test-.*"
+  
+  # Use aichat instead of claude for AI summaries
+  gitsyncer showcase --ai-tool aichat`,
 	Run: func(cmd *cobra.Command, args []string) {
 		flags := buildFlags()
 		flags.Showcase = true
 		flags.Force = forceRegenerate
+		flags.AITool = showcaseAITool
 		
 		fmt.Println("Running showcase generation for all repositories...")
 		exitCode := cli.HandleShowcaseOnly(cfg, flags)
@@ -54,4 +59,5 @@ func init() {
 	showcaseCmd.Flags().StringVarP(&outputPath, "output", "o", "", "custom output path (default: ~/git/foo.zone-content/gemtext/about/showcase.gmi.tpl)")
 	showcaseCmd.Flags().StringVar(&outputFormat, "format", "gemtext", "output format: gemtext, markdown, html")
 	showcaseCmd.Flags().StringVar(&excludePattern, "exclude", "", "exclude repos matching pattern")
+	showcaseCmd.Flags().StringVar(&showcaseAITool, "ai-tool", "claude", "AI tool to use for project summaries (claude or aichat)")
 }
\ No newline at end of file
diff --git a/internal/showcase/showcase.go b/internal/showcase/showcase.go
index 8c49b54..815614c 100644
--- a/internal/showcase/showcase.go
+++ b/internal/showcase/showcase.go
@@ -17,6 +17,7 @@ import (
 type Generator struct {
 	config  *config.Config
 	workDir string
+	aiTool  string
 }
 
 // ProjectSummary holds the summary information for a project
@@ -49,9 +50,15 @@ func New(cfg *config.Config, workDir string) *Generator {
 	return &Generator{
 		config:  cfg,
 		workDir: workDir,
+		aiTool:  "claude", // default to claude
 	}
 }
 
+// SetAITool sets the AI tool to use for generating summaries
+func (g *Generator) SetAITool(tool string) {
+	g.aiTool = tool
+}
+
 // GenerateShowcase generates a showcase for repositories
 // If repoFilter is provided, only those repositories are processed
 // If repoFilter is empty/nil, all repositories in work directory are processed
@@ -184,16 +191,16 @@ func (g *Generator) generateProjectSummary(repoName string, forceRegenerate bool
 	var haveCachedSummary bool
 	if !forceRegenerate {
 		if cached, err := g.loadFromCache(cacheFile); err == nil {
-			fmt.Printf("Using cached Claude summary (cache file: %s)\n", cacheFile)
+			fmt.Printf("Using cached AI summary (cache file: %s)\n", cacheFile)
 			cachedSummary = cached.Summary
 			haveCachedSummary = true
 		}
 	}
 
-	// Check if claude command exists (only if we need to run it)
+	// Check if AI tool command exists (only if we need to run it)
 	if !haveCachedSummary {
-		if _, err := exec.LookPath("claude"); err != nil {
-			return nil, fmt.Errorf("claude command not found. Please install Claude CLI")
+		if _, err := exec.LookPath(g.aiTool); err != nil {
+			return nil, fmt.Errorf("%s command not found. Please install %s CLI", g.aiTool, g.aiTool)
 		}
 	}
 
@@ -216,27 +223,63 @@ func (g *Generator) generateProjectSummary(repoName string, forceRegenerate bool
 		// Continue anyway with partial metadata
 	}
 
-	// Get the summary - either from cache or by running Claude
+	// Get the summary - either from cache or by running AI tool
 	var summary string
 	if haveCachedSummary {
 		summary = cachedSummary
-		fmt.Printf("Using cached Claude summary\n")
+		fmt.Printf("Using cached AI summary\n")
 	} else {
-		// Run claude command
 		prompt := "Please provide a 1-2 paragraph summary of this project, explaining what it does, why it's useful, and how it's implemented. Focus on the key features and architecture. Be concise but informative."
 		
-		fmt.Printf("Running Claude command:\n")
-		fmt.Printf("  claude --model sonnet \"%s\"\n", prompt)
+		var cmd *exec.Cmd
+		
+		switch g.aiTool {
+		case "claude":
+			fmt.Printf("Running Claude command:\n")
+			fmt.Printf("  claude --model sonnet \"%s\"\n", prompt)
+			cmd = exec.Command("claude", "--model", "sonnet", prompt)
+		case "aichat":
+			// For aichat, we need to read README.md and pipe it to aichat
+			fmt.Printf("Running aichat command:\n")
+			
+			// Find README file
+			readmeFiles := []string{
+				"README.md", "readme.md", "Readme.md",
+				"README.MD", "README.txt", "readme.txt",
+				"README", "readme",
+			}
+			
+			var readmeContent []byte
+			var readmeFound bool
+			for _, readmeFile := range readmeFiles {
+				content, err := os.ReadFile(readmeFile)
+				if err == nil {
+					readmeContent = content
+					readmeFound = true
+					fmt.Printf("  Using %s as input\n", readmeFile)
+					break
+				}
+			}
+			
+			if !readmeFound {
+				return nil, fmt.Errorf("no README file found for aichat input")
+			}
+			
+			fmt.Printf("  echo <README content> | aichat \"%s\"\n", prompt)
+			cmd = exec.Command("aichat", prompt)
+			cmd.Stdin = strings.NewReader(string(readmeContent))
+		default:
+			return nil, fmt.Errorf("unsupported AI tool: %s", g.aiTool)
+		}
 		
-		cmd := exec.Command("claude", "--model", "sonnet", prompt)
 		output, err := cmd.Output()
 		if err != nil {
-			return nil, fmt.Errorf("failed to run claude: %w", err)
+			return nil, fmt.Errorf("failed to run %s: %w", g.aiTool, err)
 		}
 
 		summary = strings.TrimSpace(string(output))
 		if summary == "" {
-			return nil, fmt.Errorf("received empty summary from claude")
+			return nil, fmt.Errorf("received empty summary from %s", g.aiTool)
 		}
 	}
 
diff --git a/internal/version/version.go b/internal/version/version.go
index b45fdc1..b31f9ec 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -7,7 +7,7 @@ import (
 
 var (
 	// Version is the current version of gitsyncer
-	Version = "0.8.0"
+	Version = "0.8.1"
 
 	// GitCommit is the git commit hash at build time
 	GitCommit = "unknown"
diff --git a/test-config.json b/test-config.json
new file mode 100644
index 0000000..28dbfb9
--- /dev/null
+++ b/test-config.json
@@ -0,0 +1,16 @@
+{
+  "organizations": [
+    {
+      "host": "github.com",
+      "name": "test-org",
+      "github_token": "test-token"
+    },
+    {
+      "host": "codeberg.org",
+      "name": "test-org",
+      "codeberg_token": "test-token"
+    }
+  ],
+  "repositories": ["test-repo"],
+  "work_dir": "/tmp/gitsyncer-test"
+}
\ No newline at end of file