fix: support multi-part prefixes in issue ID extraction (#398)

cmd/bd/helpers_test.go

@@ -42,14 +42,18 @@ func TestExtractPrefix(t *testing.T) {
 		{"bd-123", "bd"},
 		{"custom-1", "custom"},
 		{"TEST-999", "TEST"},
-		{"no-number", "no"},     // Has hyphen, so "no" is prefix
+		{"no-number", "no"},     // Has hyphen, suffix not numeric, first hyphen
 		{"nonumber", ""},        // No hyphen
 		{"", ""},
-		// Multi-part suffixes (bd-fasa regression tests)
+		// Multi-part non-numeric suffixes (bd-fasa regression tests)
 		{"vc-baseline-test", "vc"},
 		{"vc-92cl-gate-test", "vc"},
 		{"bd-multi-part-id", "bd"},
 		{"prefix-a-b-c-d", "prefix"},
+		// Multi-part prefixes with numeric suffixes
+		{"beads-vscode-1", "beads-vscode"},
+		{"alpha-beta-123", "alpha-beta"},
+		{"my-project-42", "my-project"},
 	}
 
 	for _, tt := range tests {