feat: expose effort level setting in UI (#269)

Adds `--effort <level>` CLI flag support with a dropdown selector in the config sidebar. Valid options are low, medium, high, xhigh (Opus 4.7 only), and max.

src-tauri/src/config.rs

@@ -70,6 +70,11 @@ pub struct ClaudeStartOptions {
     /// Sets `ANTHROPIC_CUSTOM_MODEL_OPTION` env var for custom model providers (v2.1.81+).
     #[serde(default)]
     pub custom_model_option: Option<String>,
+
+    /// Passes `--effort <level>` to set the effort level (v2.1.111+).
+    /// Valid values: "low", "medium", "high", "xhigh" (Opus 4.7 only), "max". None uses CLI default.
+    #[serde(default)]
+    pub effort_level: Option<String>,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -236,6 +241,11 @@ pub struct HikariConfig {
     /// Sets `ANTHROPIC_CUSTOM_MODEL_OPTION` env var for custom model providers (v2.1.81+).
     #[serde(default)]
     pub custom_model_option: Option<String>,
+
+    /// Passes `--effort <level>` to set the effort level (v2.1.111+).
+    /// Valid values: "low", "medium", "high", "xhigh" (Opus 4.7 only), "max". None uses CLI default.
+    #[serde(default)]
+    pub effort_level: Option<String>,
 }
 
 impl Default for HikariConfig {
@@ -291,6 +301,7 @@ impl Default for HikariConfig {
             bare_mode: false,
             show_clear_context_on_plan_accept: true,
             custom_model_option: None,
+            effort_level: None,
         }
     }
 }
@@ -508,6 +519,7 @@ mod tests {
             bare_mode: false,
             show_clear_context_on_plan_accept: true,
             custom_model_option: None,
+            effort_level: None,
         };
 
         let json = serde_json::to_string(&config).unwrap();

src-tauri/src/wsl_bridge.rs

@@ -308,6 +308,14 @@ impl WslBridge {
                 cmd.arg("--bare");
             }
 
+            // Add effort level if specified (v2.1.111+)
+            if let Some(ref level) = options.effort_level {
+                if !level.is_empty() {
+                    cmd.arg("--effort");
+                    cmd.arg(level);
+                }
+            }
+
             // Pass combined settings via --settings flag if any settings are specified
             {
                 let has_memory_dir = options
@@ -532,6 +540,13 @@ impl WslBridge {
                 claude_cmd.push_str(" --bare");
             }
 
+            // Add effort level if specified (v2.1.111+)
+            if let Some(ref level) = options.effort_level {
+                if !level.is_empty() {
+                    claude_cmd.push_str(&format!(" --effort {}", level));
+                }
+            }
+
             // Pass combined settings via --settings flag if any settings are specified
             {
                 let has_memory_dir = options