perf: auto-populate git context natively to avoid token waste

- Added get_git_context() to utils.rs using git2 to natively fetch branch, commit, and repo_name without CLI overhead.
- Wired native auto-population into LogCodeChangeHandler, LogErrorFixHandler, TechDebtHandler, TasksHandler, MilestonesHandler, AutoSessionCheckpointHandler, and HandoffMemosHandler.
- Eliminates the need for the LLM to waste repetitive background turns running git rev-parse HEAD and git branch --show-current via terminal shell commands just to feed the MCP logging tools.

server/src/handlers/meta.rs

@@ -34,8 +34,8 @@ impl McpTool for LogErrorFixHandler {
                 signature: req.signature.clone(),
                 solution: solution.clone(),
                 timestamp: crate::handlers::utils::now_secs(),
-                git_commit: req.git_commit,
+                git_commit: req.git_commit.or_else(|| crate::handlers::utils::get_git_context().1),
-                git_branch: req.git_branch,
+                git_branch: req.git_branch.or_else(|| crate::handlers::utils::get_git_context().0),
                 embedding,
                 ..Default::default()
             });
@@ -203,17 +203,20 @@ impl McpTool for LogCodeChangeHandler {
             _ => crate::models::ChangeKind::Modified,
         };
 
+        let (auto_branch, auto_commit, auto_repo) = crate::handlers::utils::get_git_context();
+        let effective_repo = req.repo_name.clone().filter(|rn| !rn.trim().is_empty()).or(auto_repo.clone());
+
         let namespace = req
             .namespace
             .filter(|ns| !ns.trim().is_empty())
-            .or_else(|| req.repo_name.clone().filter(|rn| !rn.trim().is_empty()))
+            .or_else(|| effective_repo.clone())
             .unwrap_or_else(crate::models::default_namespace);
 
         let symbols = req.symbol_references.clone().unwrap_or_default();
         let line_range = req.line_range.clone();
 
-        let effective_rev = req.revision.clone().or_else(|| req.git_commit.clone());
+        let effective_rev = req.revision.clone().or_else(|| req.git_commit.clone()).or(auto_commit);
-        let effective_branch = req.branch.clone().or_else(|| req.git_branch.clone());
+        let effective_branch = req.branch.clone().or_else(|| req.git_branch.clone()).or(auto_branch);
         let detected_vcs = if let Some(vcs) = req.vcs_type.clone() {
             Some(vcs)
         } else if let Some(ref rev) = effective_rev {
@@ -248,7 +251,7 @@ impl McpTool for LogCodeChangeHandler {
                 description: description.clone(),
                 git_commit: effective_rev.clone(),
                 git_branch: effective_branch.clone(),
-                repo_name: req.repo_name,
+                repo_name: effective_repo,
                 repo_url: req.repo_url,
                 namespace: namespace.clone(),
                 change_kind,
@@ -629,10 +632,10 @@ impl McpTool for TechDebtHandler {
                         ideal_solution: ideal,
                         is_resolved: false,
                         created_at: crate::handlers::utils::now_secs(),
-                        git_commit: git_commit,
+                        git_commit: git_commit.or_else(|| crate::handlers::utils::get_git_context().1),
-                        git_branch: git_branch,
+                        git_branch: git_branch.or_else(|| crate::handlers::utils::get_git_context().0),
                         embedding,
-                        repo_name: repo_name,
+                        repo_name: repo_name.or_else(|| crate::handlers::utils::get_git_context().2),
                         severity: severity,
                         file_path: file_path,
                         line_range: line_range,
@@ -1823,6 +1826,8 @@ impl McpTool for AutoSessionCheckpointHandler {
             timestamp, active_tasks, unverified_hyp, recent_changes
         );
 
+        let (auto_branch, auto_commit, auto_repo) = crate::handlers::utils::get_git_context();
+
         let memo = crate::models::HandoffMemo {
             id: memo_id.clone(),
             author,
@@ -1830,6 +1835,9 @@ impl McpTool for AutoSessionCheckpointHandler {
             expires_at: None,
             namespace: req.namespace,
             timestamp,
+            git_branch: auto_branch,
+            vcs_revision: auto_commit,
+            repo_name: auto_repo,
             ..Default::default()
         };
 

server/src/handlers/notes.rs

@@ -32,6 +32,7 @@ impl McpTool for HandoffMemosHandler {
                 let ns = req
                     .namespace
                     .unwrap_or_else(crate::models::default_namespace);
+                let (auto_branch, auto_commit, auto_repo) = crate::handlers::utils::get_git_context();
                 state.telemetry.handoff_memos.modify(|memos| {
                     memos.push(crate::models::HandoffMemo {
                         id: uuid::Uuid::new_v4().to_string(),
@@ -40,6 +41,9 @@ impl McpTool for HandoffMemosHandler {
                         namespace: ns,
                         timestamp: crate::handlers::utils::now_secs(),
                         expires_at: None,
+                        git_branch: auto_branch,
+                        vcs_revision: auto_commit,
+                        repo_name: auto_repo,
                         ..Default::default()
                     });
                     if memos.len() > 200 {
@@ -103,9 +107,9 @@ impl McpTool for AddSessionSummaryHandler {
                 timestamp: crate::handlers::utils::now_secs(),
                 expires_at: None,
                 session_id: req.session_id,
-                repo_name: req.repo_name,
+                repo_name: req.repo_name.or_else(|| crate::handlers::utils::get_git_context().2),
-                git_branch: req.git_branch,
+                git_branch: req.git_branch.or_else(|| crate::handlers::utils::get_git_context().0),
-                git_commit: req.git_commit,
+                git_commit: req.git_commit.or_else(|| crate::handlers::utils::get_git_context().1),
                 tasks_completed: req.tasks_completed.unwrap_or_default(),
                 next_steps: req.next_steps.unwrap_or_default(),
             });

server/src/handlers/tasks.rs

@@ -37,13 +37,13 @@ impl McpTool for TasksHandler {
                     description,
                     created_at: now,
                     updated_at: now,
-                    git_branch,
+                    git_branch: git_branch.or_else(|| crate::handlers::utils::get_git_context().0),
                     parent_id,
                     dependencies: deps,
                     acceptance_criteria: vec![],
                     expires_at: None,
                     namespace: namespace.unwrap_or_else(|| "default".to_string()),
-                    repo_name,
+                    repo_name: repo_name.or_else(|| crate::handlers::utils::get_git_context().2),
                     priority,
                     assigned_agent,
                     verification_command,
@@ -430,7 +430,7 @@ impl McpTool for MilestonesHandler {
                         description: description,
                         task_ids: task_ids.unwrap_or_default(),
                         deliverables: deliverables.unwrap_or_default(),
-                        repo_name,
+                        repo_name: repo_name.or_else(|| crate::handlers::utils::get_git_context().2),
                         ..Default::default()
                     })
                 });

server/src/handlers/utils.rs

@@ -57,6 +57,27 @@ pub fn sanitize_path(raw_path: &str) -> String {
     raw_path.to_string()
 }
 
+pub fn get_git_context() -> (Option<String>, Option<String>, Option<String>) {
+    let mut branch = None;
+    let mut commit = None;
+    let mut repo_name = None;
+
+    if let Ok(cwd) = std::env::current_dir() {
+        if let Ok(repo) = git2::Repository::discover(&cwd) {
+            if let Ok(head) = repo.head() {
+                branch = head.shorthand().map(|s| s.to_string());
+                commit = head.target().map(|oid| oid.to_string());
+            }
+            if let Some(path) = repo.workdir() {
+                if let Some(name) = path.file_name() {
+                    repo_name = name.to_str().map(|s| s.to_string());
+                }
+            }
+        }
+    }
+    (branch, commit, repo_name)
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;