Remove the node switcher UI, native title-bar integration, registry persistence, and dedicated dependencies

Hop-State: A_06FPH4TF27M92NB8GVKNGKG
Hop-Proposal: R_06FPH4T0F0KDZV6BB8BQ0J8
Hop-Task: T_06FPH2162KK06P10J2MY3SR
Hop-Attempt: AT_06FPH2162H2HW7STZZWQFJR

src-tauri/Cargo.lock

@@ -2267,17 +2267,9 @@ checksum = "d49e936b501e5c5bf01fda3a9452ff86dc3ea98ad5f283e1455153142d97518c"
 dependencies = [
  "bitflags 2.13.1",
  "block2",
- "libc",
  "objc2",
- "objc2-cloud-kit",
- "objc2-core-data",
  "objc2-core-foundation",
- "objc2-core-graphics",
- "objc2-core-image",
- "objc2-core-text",
- "objc2-core-video",
  "objc2-foundation",
- "objc2-quartz-core",
 ]
 
 [[package]]
@@ -2297,7 +2289,6 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b402a653efbb5e82ce4df10683b6b28027616a2715e90009947d50b8dd298fa"
 dependencies = [
- "bitflags 2.13.1",
  "objc2",
  "objc2-foundation",
 ]
@@ -2358,19 +2349,6 @@ dependencies = [
  "objc2-core-graphics",
 ]
 
-[[package]]
-name = "objc2-core-video"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d425caf1df73233f29fd8a5c3e5edbc30d2d4307870f802d18f00d83dc5141a6"
-dependencies = [
- "bitflags 2.13.1",
- "objc2",
- "objc2-core-foundation",
- "objc2-core-graphics",
- "objc2-io-surface",
-]
-
 [[package]]
 name = "objc2-encode"
 version = "4.1.0"
@@ -3699,9 +3677,6 @@ name = "synapsis-desktop"
 version = "0.1.0"
 dependencies = [
  "http",
- "objc2",
- "objc2-app-kit",
- "objc2-foundation",
  "reqwest 0.12.28",
  "serde",
  "serde_json",