feat: add comprehensive showcase generation with metadata and images

- Add --showcase flag to generate project showcases using Claude
- Extract repository metadata (languages, commits, LOC, dates, license)
- Support image extraction from README files (local and remote)
- Add caching with --force flag to regenerate
- Add exclude_from_showcase config option
- Add standalone showcase mode (--showcase without sync)
- Sort projects by recent activity (avg age of last 100 commits)
- Output in Gemini Gemtext template format (.gmi.tpl)
- Fix backup location fetching when --backup flag not set

🤖 Generated with Claude Code

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

1 files changed, 35 insertions, 0 deletions

diff --git a/internal/cli/showcase_handler.go b/internal/cli/showcase_handler.go
new file mode 100644
index 0000000..a3dfd26
--- /dev/null
+++ b/internal/cli/showcase_handler.go
@@ -0,0 +1,35 @@
+package cli
+
+import (
+	"fmt"
+	"log"
+
+	"codeberg.org/snonux/gitsyncer/internal/config"
+	"codeberg.org/snonux/gitsyncer/internal/showcase"
+)
+
+// HandleShowcase handles the showcase generation after syncing
+func HandleShowcase(cfg *config.Config, flags *Flags) int {
+	// Determine which repositories to process
+	var repoFilter []string
+	if flags.SyncRepo != "" {
+		// Only process the specific repository that was synced
+		repoFilter = []string{flags.SyncRepo}
+		fmt.Printf("\nGenerating showcase for %s...\n", flags.SyncRepo)
+	} else {
+		// Process all repositories for --sync-all or public sync operations
+		fmt.Println("\nGenerating project showcase for all repositories...")
+	}
+	
+	// Create showcase generator
+	generator := showcase.New(cfg, flags.WorkDir)
+	
+	// Generate showcase with optional filter
+	if err := generator.GenerateShowcase(repoFilter, flags.Force); err != nil {
+		log.Printf("ERROR: Failed to generate showcase: %v\n", err)
+		return 1
+	}
+	
+	fmt.Println("Showcase generated successfully!")
+	return 0
+}
\ No newline at end of file