feat: first cut at dev brain

src/app.rs

@@ -14,7 +14,7 @@ use preferences::PreferenceDraft;
 #[cfg(test)]
 use preferences::{parse_optional_gib, parse_streaming_cache};
 
-use crate::config::{Config, EndpointConfig};
+use crate::config::{Config, DevBrainConfig, EndpointConfig};
 use crate::database::{Database, ProjectWithSessions, SessionState, StoredMessage};
 #[cfg(target_os = "macos")]
 use crate::engine::ChatTurn;
@@ -247,6 +247,7 @@ pub(super) enum DetailTab {
 pub(super) enum PreferenceSection {
     Model,
     Endpoint,
+    DevBrain,
     Generation,
     Execution,
     Acceleration,
@@ -255,9 +256,10 @@ pub(super) enum PreferenceSection {
 }
 
 impl PreferenceSection {
-    const ALL: [Self; 7] = [
+    const ALL: [Self; 8] = [
         Self::Model,
         Self::Endpoint,
+        Self::DevBrain,
         Self::Generation,
         Self::Execution,
         Self::Acceleration,
@@ -269,6 +271,7 @@ impl PreferenceSection {
         match self {
             Self::Model => "preferences-model",
             Self::Endpoint => "preferences-endpoint",
+            Self::DevBrain => "preferences-dev-brain",
             Self::Generation => "preferences-generation",
             Self::Execution => "preferences-execution",
             Self::Acceleration => "preferences-acceleration",
@@ -281,6 +284,7 @@ impl PreferenceSection {
         match self {
             Self::Model => "Model & lifecycle",
             Self::Endpoint => "Local endpoint",
+            Self::DevBrain => "Dev Brain",
             Self::Generation => "Generation",
             Self::Execution => "Execution",
             Self::Acceleration => "Acceleration & memory",
@@ -338,6 +342,10 @@ pub(crate) enum Message {
     PreferenceEndpointPortChanged(String),
     PreferenceEndpointEnabledChanged(bool),
     PreferenceEndpointCorsChanged(bool),
+    PreferenceDevBrainEnabledChanged(bool),
+    PreferenceDevBrainVaultChanged(String),
+    ChooseDevBrainVault,
+    DevBrainVaultPicked(Option<PathBuf>),
     PreferenceContextChanged(String),
     PreferenceMaxTokensChanged(String),
     PreferenceSystemPromptAction(text_editor::Action),
@@ -1157,6 +1165,33 @@ impl App {
                 self.preference_draft.endpoint_cors = enabled;
                 self.preference_error = None;
             }
+            Message::PreferenceDevBrainEnabledChanged(enabled) => {
+                self.preference_draft.dev_brain_enabled = enabled;
+                self.preference_error = None;
+            }
+            Message::PreferenceDevBrainVaultChanged(value) => {
+                self.preference_draft.dev_brain_vault_path = value;
+                self.preference_error = None;
+            }
+            Message::ChooseDevBrainVault => {
+                return Task::perform(
+                    async {
+                        AsyncFileDialog::new()
+                            .set_title("Choose an Obsidian vault")
+                            .pick_folder()
+                            .await
+                            .map(|folder| folder.path().to_path_buf())
+                    },
+                    Message::DevBrainVaultPicked,
+                );
+            }
+            Message::DevBrainVaultPicked(path) => {
+                if let Some(path) = path {
+                    self.preference_draft.dev_brain_vault_path =
+                        path.to_string_lossy().into_owned();
+                    self.preference_error = None;
+                }
+            }
             Message::PreferenceContextChanged(value) => {
                 self.preference_draft.context_tokens = value;
                 self.preference_error = None;
@@ -1702,6 +1737,7 @@ impl App {
                                 self.tokens_per_second = None;
                             }
                             self.reload_projects();
+                            self.invalidate_dev_brain_context();
                             self.finish_cache_change();
                         }
                         Err(error) => self.error = Some(error),