feat: display deployment status badge on READY task cards

Add deployment_status field to task list/get API responses for READY
tasks. The field includes deployed_commit, fix_commits, and includes_fix
so the UI can show whether the deployed server includes each fix.

- internal/api/task_view.go: taskView struct + enrichTask() helper
- handleListTasks/handleGetTask: return enriched taskView responses
- web/app.js: export renderDeploymentBadge(); add badge to READY cards
- web/test/deployment-badge.test.mjs: 8 tests for renderDeploymentBadge
- web/style.css: .deployment-badge--deployed / --pending styles
- server_test.go: 3 new tests (red→green) for enriched task responses

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/internal/api/task_view.go b/internal/api/task_view.go
new file mode 100644
index 0000000..5791058
--- /dev/null
+++ b/internal/api/task_view.go
@@ -0,0 +1,41 @@
+package api
+
+import (
+	"database/sql"
+
+	"github.com/thepeterstone/claudomator/internal/deployment"
+	"github.com/thepeterstone/claudomator/internal/task"
+)
+
+// taskView wraps a task with computed fields that are derived from execution
+// history and deployment state. It is used as the JSON response type for task
+// list and get endpoints so that callers receive enriched data in one request.
+type taskView struct {
+	*task.Task
+	Changestats      *task.Changestats  `json:"changestats,omitempty"`
+	DeploymentStatus *deployment.Status `json:"deployment_status,omitempty"`
+}
+
+// enrichTask fetches the latest execution for the given task and attaches
+// changestats and deployment_status fields for READY tasks.
+// Non-READY tasks are returned without these extra fields.
+func (s *Server) enrichTask(tk *task.Task) *taskView {
+	view := &taskView{Task: tk}
+
+	if tk.State != task.StateReady {
+		return view
+	}
+
+	exec, err := s.store.GetLatestExecution(tk.ID)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			// No execution yet — still include deployment status (empty commits).
+			view.DeploymentStatus = deployment.Check(nil, tk.Agent.ProjectDir)
+		}
+		return view
+	}
+
+	view.Changestats = exec.Changestats
+	view.DeploymentStatus = deployment.Check(exec.Commits, tk.Agent.ProjectDir)
+	return view
+}