feat(settings): Settings1 стаб + атомарный стор + seed дефолтов

Store (load_or_seed/get/set/reset/list, durable-write) + SettingsService #[interface] + bin.
v0: строковые значения (variant на проводе), сам сеет дефолты.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Signed-off-by: Alexander <akotenev2003@gmail.com>

Cargo.lock

@@ -715,6 +715,19 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "serde_json"
+version = "1.0.150"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8014e44b4736ed0538adeecded0fce2a272f22dc9578a7eb6b2d9993c74cfb9"
+dependencies = [
+ "itoa",
+ "memchr",
+ "serde",
+ "serde_core",
+ "zmij",
+]
+
 [[package]]
 name = "serde_repr"
 version = "0.1.20"
@@ -798,6 +811,21 @@ dependencies = [
  "zbus",
 ]
 
+[[package]]
+name = "shturman-settings"
+version = "0.0.0"
+dependencies = [
+ "anyhow",
+ "serde_json",
+ "shturman-common",
+ "shturman-ipc",
+ "shturman-sdk",
+ "tempfile",
+ "tokio",
+ "tracing",
+ "zbus",
+]
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.8"
@@ -1251,6 +1279,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "zmij"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
+
 [[package]]
 name = "zvariant"
 version = "4.2.0"