Settings refactor (#38367)

Co-Authored-By: Ben K <ben@zed.dev>
Co-Authored-By: Anthony <anthony@zed.dev>
Co-Authored-By: Mikayla <mikayla@zed.dev>

Release Notes:

- settings: Major internal changes to settings. The primary user-facing
effect is that some settings which did not make sense in project
settings files are no-longer read from there. (For example the inline
blame settings)

---------

Co-authored-by: Ben Kunkle <ben@zed.dev>
Co-authored-by: Mikayla Maki <mikayla.c.maki@gmail.com>
Co-authored-by: Anthony <anthony@zed.dev>

crates/language_model/src/language_model.rs

@@ -21,6 +21,7 @@ use open_router::OpenRouterError;
 use parking_lot::Mutex;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize, de::DeserializeOwned};
+pub use settings::LanguageModelCacheConfiguration;
 use std::ops::{Add, Sub};
 use std::str::FromStr;
 use std::sync::Arc;
@@ -62,14 +63,6 @@ pub fn init_settings(cx: &mut App) {
     registry::init(cx);
 }
 
-/// Configuration for caching language model messages.
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, JsonSchema)]
-pub struct LanguageModelCacheConfiguration {
-    pub max_cache_anchors: usize,
-    pub should_speculate: bool,
-    pub min_total_token: u64,
-}
-
 /// A completion event from a language model.
 #[derive(Debug, PartialEq, Clone, Serialize, Deserialize)]
 pub enum LanguageModelCompletionEvent {