feat(tool): tambah abort_flag ke ToolCtx dan sambungkan dari session state

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/tool/mod.rs

@@ -2,6 +2,7 @@
 
 use std::path::PathBuf;
 use std::sync::{Arc, Mutex};
+use std::sync::atomic::AtomicBool;
 use serde_json::Value;
 use anyhow::Result;
 
@@ -56,6 +57,11 @@ pub struct ToolCtx {
     /// reference earlier results. `None` means "not inside a workflow" —
     /// `note_finding` becomes a no-op.
     pub workflow_findings: Option<Arc<Mutex<Vec<String>>>>,
+    /// The current turn's abort flag, threaded through so tools that
+    /// delegate to long-running orchestration (e.g. the `hive_mind` tool)
+    /// can be cancelled the same way the main agent loop is. `None` when
+    /// no turn-level abort flag is available.
+    pub abort_flag: Option<Arc<AtomicBool>>,
 }
 
 /// Find which graduated checks apply to a given file path/content pair.
@@ -93,6 +99,7 @@ pub struct ToolCtxBuilder {
     pub lsp_manager: Arc<Mutex<crate::app::lsp::LspManager>>,
     pub turn_events: Option<Arc<Mutex<std::collections::VecDeque<crate::app::state::runtime::TurnEvent>>>>,
     pub workflow_findings: Option<Arc<Mutex<Vec<String>>>>,
+    pub abort_flag: Option<Arc<AtomicBool>>,
 }
 
 impl Default for ToolCtxBuilder {
@@ -108,6 +115,7 @@ impl Default for ToolCtxBuilder {
             lsp_manager: Arc::new(Mutex::new(crate::app::lsp::LspManager::new())),
             turn_events: None,
             workflow_findings: None,
+            abort_flag: None,
         }
     }
 }
@@ -135,6 +143,7 @@ impl ToolCtxBuilder {
             lsp_manager: self.lsp_manager,
             turn_events: self.turn_events,
             workflow_findings: self.workflow_findings,
+            abort_flag: self.abort_flag,
         }
     }
 }
@@ -264,3 +273,14 @@ pub fn resolve_path(workspaces: &[PathBuf], rel: &str) -> Result<PathBuf> {
         anyhow::bail!("path '{rel}' is outside all workspace roots")
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn tool_ctx_builder_defaults_abort_flag_to_none() {
+        let ctx = ToolCtx::builder().build();
+        assert!(ctx.abort_flag.is_none());
+    }
+}