feat: add SettingsPage with HuggingFace model search and fix flexbox layout

- Add SettingsPage component with macOS/Linear-style settings UI (sp-* classes)
- Fix HuggingFace results list squeeze: sp-card-row--full now has align-items: stretch
  overriding the inherited flex-start, ensuring children fill 100% horizontal width
- Fix sp-hf-file row layout: width 100%, grid columns for name/quant/size/download
- Fix sp-hf-name truncation: explicit overflow/ellipsis/white-space in CSS
- Add white-space: nowrap to sp-hf-size and sp-hf-quant-badge to protect secondary columns
- Add runtime-deps crate, Tailwind/PostCSS config, runtime-defaults, MessageBubble test
- Update Cargo workspace, inference-server, tauri runtime types and process handling

Cargo.toml

@@ -2,6 +2,7 @@
 resolver = "2"
 members = [
     "crates/llama-sys",
+    "crates/runtime-deps",
     "crates/inference-core",
     "crates/inference-server",
     "crates/api-contracts",
@@ -47,6 +48,9 @@ tokio-stream = "0.1"
 bytes = "1"
 clap = { version = "4", features = ["derive"] }
 ureq = { version = "2", features = ["json"] }
+sha2 = "0.10"
+zip = { version = "2", default-features = false, features = ["deflate"] }
+dirs = "5"
 
 [profile.dev]
 opt-level = 0