fix(init): allow fresh clones with JSONL to run bd init (bd-4h9)

Previously, bd init blocked when JSONL existed with issues but no database,
telling users to run 'bd doctor --fix'. But doctor --fix just ran bd migrate
which requires an existing database - creating a circular dependency.

Now:
- bd init allows fresh clones (JSONL exists, no database) to proceed
- bd init creates the database and imports from JSONL automatically
- bd doctor --fix runs bd init (not migrate) when there's no database

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

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

cmd/bd/doctor/fix/migrate.go

@@ -4,9 +4,11 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"path/filepath"
 )
 
-// DatabaseVersion fixes database version mismatches by running bd migrate
+// DatabaseVersion fixes database version mismatches by running bd migrate,
+// or creates the database from JSONL by running bd init for fresh clones (bd-4h9).
 func DatabaseVersion(path string) error {
 	// Validate workspace
 	if err := validateBeadsWorkspace(path); err != nil {
@@ -19,7 +21,25 @@ func DatabaseVersion(path string) error {
 		return err
 	}
 
-	// Run bd migrate
+	// Check if database exists - if not, run init instead of migrate (bd-4h9)
+	beadsDir := filepath.Join(path, ".beads")
+	dbPath := filepath.Join(beadsDir, "beads.db")
+
+	if _, err := os.Stat(dbPath); os.IsNotExist(err) {
+		// No database - this is a fresh clone, run bd init
+		fmt.Println("→ No database found, running 'bd init' to hydrate from JSONL...")
+		cmd := exec.Command(bdBinary, "init") // #nosec G204 -- bdBinary from validated executable path
+		cmd.Dir = path
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+
+		if err := cmd.Run(); err != nil {
+			return fmt.Errorf("failed to initialize database: %w", err)
+		}
+		return nil
+	}
+
+	// Database exists - run bd migrate
 	cmd := exec.Command(bdBinary, "migrate") // #nosec G204 -- bdBinary from validated executable path
 	cmd.Dir = path                           // Set working directory without changing process dir
 	cmd.Stdout = os.Stdout