feat: fix task failures via sandbox improvements and display commits in Web UI

- Fix ephemeral sandbox deletion issue by passing $CLAUDOMATOR_PROJECT_DIR to agents and using it for subtask project_dir.
- Implement sandbox autocommit in teardown to prevent task failures from uncommitted work.
- Track git commits created during executions and persist them in the DB.
- Display git commits and changestats badges in the Web UI execution history.
- Add badge counts to Web UI tabs for Interrupted, Ready, and Running states.
- Improve scripts/next-task to handle QUEUED tasks and configurable DB path.

1 files changed, 6 insertions, 0 deletions

diff --git a/internal/task/task.go b/internal/task/task.go
index b85b07c..6a9d1db 100644
--- a/internal/task/task.go
+++ b/internal/task/task.go
@@ -48,6 +48,12 @@ type RetryConfig struct {
 	Backoff     string `yaml:"backoff"      json:"backoff"` // "linear", "exponential"
 }
 
+// GitCommit represents a single git commit created during a task execution.
+type GitCommit struct {
+	Hash    string `json:"hash"`
+	Message string `json:"message"`
+}
+
 // Changestats records file/line change metrics from an agent execution.
 type Changestats struct {
 	FilesChanged int `json:"files_changed"`