feat(client): connection profiles (--profile/-P, --save) with JSON persistence

Cargo.lock

@@ -540,6 +540,27 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "dirs-next"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b98cf8ebf19c3d1b223e151f99a4f9f0690dca41414773390fc824184ac833e1"
+dependencies = [
+ "cfg-if",
+ "dirs-sys-next",
+]
+
+[[package]]
+name = "dirs-sys-next"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ebda144c4fe02d1f7ea1a7d9641b6fc6b580adcfa024ae48797ecdeb6825b4d"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi",
+]
+
 [[package]]
 name = "displaydoc"
 version = "0.2.5"
@@ -1204,6 +1225,16 @@ dependencies = [
  "windows-targets 0.53.3",
 ]
 
+[[package]]
+name = "libredox"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "391290121bad3d37fbddad76d8f5d1c1c314cfc646d143d7e07a3086ddff0ce3"
+dependencies = [
+ "bitflags",
+ "libc",
+]
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.4.15"
@@ -1850,6 +1881,17 @@ dependencies = [
  "bitflags",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba009ff324d1fc1b900bd1fdb31564febe58a8ccc8a6fdbb93b543d33b13ca43"
+dependencies = [
+ "getrandom 0.2.16",
+ "libredox",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "regex"
 version = "1.11.1"
@@ -2183,6 +2225,7 @@ dependencies = [
  "bytes",
  "chrono",
  "crossterm 0.27.0",
+ "dirs-next",
  "flate2",
  "futures",
  "futures-util",