fix: Auto-configure sync.branch during bd init (bd-flil)

- bd init now auto-sets sync.branch to current git branch
- Fixes 'bd sync --status' error after fresh bd init
- Changed all branch detection to use 'git symbolic-ref' instead of 'git rev-parse' to work in fresh repos without commits
- Updated init.go, init_team.go, sync.go, version.go

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

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

cmd/bd/init.go

@@ -210,7 +210,16 @@ With --no-db: creates .beads/ directory and issues.jsonl file instead of SQLite
 			os.Exit(1)
 		}
 
-		// Set sync.branch if specified
+		// Set sync.branch: use explicit --branch flag, or auto-detect current branch
+		// This ensures bd sync --status works after bd init (bd-flil)
+		if branch == "" && isGitRepo() {
+			// Auto-detect current branch if not specified
+			currentBranch, err := getGitBranch()
+			if err == nil && currentBranch != "" {
+				branch = currentBranch
+			}
+		}
+
 		if branch != "" {
 			if err := syncbranch.Set(ctx, store, branch); err != nil {
 				fmt.Fprintf(os.Stderr, "Error: failed to set sync branch: %v\n", err)

cmd/bd/init_team.go

@@ -188,13 +188,14 @@ func runTeamWizard(ctx context.Context, store storage.Storage) error {
 }
 
 // getGitBranch returns the current git branch name
+// Uses symbolic-ref instead of rev-parse to work in fresh repos without commits (bd-flil)
 func getGitBranch() (string, error) {
-	cmd := exec.Command("git", "rev-parse", "--abbrev-ref", "HEAD")
+	cmd := exec.Command("git", "symbolic-ref", "--short", "HEAD")
 	output, err := cmd.Output()
 	if err != nil {
 		return "", err
 	}
-	
+
 	return strings.TrimSpace(string(output)), nil
 }
 

cmd/bd/sync.go

@@ -470,7 +470,8 @@ func gitPull(ctx context.Context) error {
 	}
 	
 	// Get current branch name
-	branchCmd := exec.CommandContext(ctx, "git", "rev-parse", "--abbrev-ref", "HEAD")
+	// Use symbolic-ref to work in fresh repos without commits (bd-flil)
+	branchCmd := exec.CommandContext(ctx, "git", "symbolic-ref", "--short", "HEAD")
 	branchOutput, err := branchCmd.Output()
 	if err != nil {
 		return fmt.Errorf("failed to get current branch: %w", err)
@@ -678,8 +679,9 @@ func exportToJSONL(ctx context.Context, jsonlPath string) error {
 }
 
 // getCurrentBranch returns the name of the current git branch
+// Uses symbolic-ref instead of rev-parse to work in fresh repos without commits (bd-flil)
 func getCurrentBranch(ctx context.Context) (string, error) {
-	cmd := exec.CommandContext(ctx, "git", "rev-parse", "--abbrev-ref", "HEAD")
+	cmd := exec.CommandContext(ctx, "git", "symbolic-ref", "--short", "HEAD")
 	output, err := cmd.Output()
 	if err != nil {
 		return "", fmt.Errorf("failed to get current branch: %w", err)

cmd/bd/version.go

@@ -151,7 +151,8 @@ func resolveBranch() string {
 	}
 
 	// Fallback: try to get branch from git at runtime
-	cmd := exec.Command("git", "rev-parse", "--abbrev-ref", "HEAD")
+	// Use symbolic-ref to work in fresh repos without commits (bd-flil)
+	cmd := exec.Command("git", "symbolic-ref", "--short", "HEAD")
 	cmd.Dir = "."
 	if output, err := cmd.Output(); err == nil {
 		if branch := strings.TrimSpace(string(output)); branch != "" && branch != "HEAD" {