feat(recovery): implement header backup/restore, BIP-39 recovery key, and integrity verification

Cargo.lock

@@ -136,6 +136,12 @@ dependencies = [
  "password-hash",
 ]
 
+[[package]]
+name = "arrayvec"
+version = "0.7.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3fb67a6e08acf24fdeccbac2cb6ac4305825bd1f117462e0e6f2f193345ad56"
+
 [[package]]
 name = "atomic-waker"
 version = "1.1.2"
@@ -160,6 +166,27 @@ version = "1.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2af50177e190e07a26ab74f8b1efbfe2ef87da2116221318cb1c2e82baf7de06"
 
+[[package]]
+name = "bip39"
+version = "2.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90dbd31c98227229239363921e60fcf5e558e43ec69094d46fc4996f08d1d5bc"
+dependencies = [
+ "bitcoin_hashes",
+ "serde",
+ "unicode-normalization",
+ "zeroize",
+]
+
+[[package]]
+name = "bitcoin_hashes"
+version = "0.14.101"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bca4c7abb40c8817d77403c880988cfd484f23ab2365726afb2f798363e2c4a2"
+dependencies = [
+ "hex-conservative",
+]
+
 [[package]]
 name = "bitflags"
 version = "2.13.1"
@@ -596,6 +623,21 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
+[[package]]
+name = "hex"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
+
+[[package]]
+name = "hex-conservative"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db3fef046dca3ca91ee1408a8c1b80ab777e80a4d308d1bf4e7adb3fcb047e08"
+dependencies = [
+ "arrayvec",
+]
+
 [[package]]
 name = "htmlescape"
 version = "0.3.1"
@@ -1193,11 +1235,13 @@ dependencies = [
  "aes-gcm",
  "anyhow",
  "argon2",
+ "bip39",
  "bytes",
  "clap",
  "dav-server",
  "dyn-clone",
  "futures-util",
+ "hex",
  "http-body-util",
  "hyper",
  "hyper-util",
@@ -1411,6 +1455,21 @@ dependencies = [
  "zerovec",
 ]
 
+[[package]]
+name = "tinyvec"
+version = "1.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4cf0ded5c4e56918d8f8a339e1bb67d038d3bc6d144ac407904015ba2e4cde9b"
+dependencies = [
+ "tinyvec_macros",
+]
+
+[[package]]
+name = "tinyvec_macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
+
 [[package]]
 name = "tokio"
 version = "1.53.1"
@@ -1538,6 +1597,15 @@ version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
+[[package]]
+name = "unicode-normalization"
+version = "0.1.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5fd4f6878c9cb28d874b009da9e8d183b5abc80117c40bbd187a1fde336be6e8"
+dependencies = [
+ "tinyvec",
+]
+
 [[package]]
 name = "universal-hash"
 version = "0.5.1"