Implement next-gen modules: chrs-code-edit (Git), chrs-discovery (LibP2P), and chrs-observer (TUI)

chrs-code-edit/src/lib.rs

@@ -0,0 +1,46 @@
+//! chrs-code-edit: Autonomous Git-based code editing for CHORUS.
+
+use git2::{Repository, BranchType};
+use std::path::Path;
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum EditError {
+    #[error("Git error: {0}")]
+    Git(#[from] git2::Error),
+    #[error("IO error: {0}")]
+    Io(#[from] std::io::Error),
+}
+
+/// Manages isolated Git worktrees/branches for agent tasks.
+pub struct WorktreeManager {
+    repo: Repository,
+}
+
+impl WorktreeManager {
+    /// Open an existing repository.
+    pub fn open<P: AsRef<Path>>(path: P) -> Result<Self, EditError> {
+        let repo = Repository::open(path)?;
+        Ok(Self { repo })
+    }
+
+    /// Create a new branch for a specific task.
+    /// 
+    /// **Why**: Isolation ensures that agents do not conflict with each other 
+    /// or the main branch while performing autonomous edits.
+    pub fn spawn_task_branch(&self, task_id: &str) -> Result<String, EditError> {
+        let branch_name = format!("task/{}", task_id);
+        let head = self.repo.head()?.peel_to_commit()?;
+        self.repo.branch(&branch_name, &head, false)?;
+        println!("[CODE-EDIT] Spawned branch: {}", branch_name);
+        Ok(branch_name)
+    }
+
+    /// Checkout a specific branch.
+    pub fn checkout_branch(&self, branch_name: &str) -> Result<(), EditError> {
+        let obj = self.repo.revparse_single(&format!("refs/heads/{}", branch_name))?;
+        self.repo.checkout_tree(&obj, None)?;
+        self.repo.set_head(&format!("refs/heads/{}", branch_name))?;
+        Ok(())
+    }
+}