chore: refactor joining and recording into a reusable function

Cargo.lock

@@ -492,6 +492,31 @@ dependencies = [
  "piper",
 ]
 
+[[package]]
+name = "bon"
+version = "3.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f47dbe92550676ee653353c310dfb9cf6ba17ee70396e1f7cf0a2020ad49b2fe"
+dependencies = [
+ "bon-macros",
+ "rustversion",
+]
+
+[[package]]
+name = "bon-macros"
+version = "3.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "519bd3116aeeb42d5372c29d982d16d0170d3d4a5ed85fc7dd91642ffff3c67c"
+dependencies = [
+ "darling 0.23.0",
+ "ident_case",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "rustversion",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "brotli"
 version = "8.0.2"
@@ -1743,6 +1768,7 @@ version = "0.1.0"
 dependencies = [
  "async-compression",
  "async-trait",
+ "bon",
  "bytes",
  "capnp",
  "capnpc",