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, 21 insertions, 0 deletions

diff --git a/web/style.css b/web/style.css
index e7d1de4..1b6fb69 100644
--- a/web/style.css
+++ b/web/style.css
@@ -863,6 +863,27 @@ dialog label select:focus {
   white-space: nowrap;
 }
 
+.deployment-badge {
+  display: inline-block;
+  font-size: 0.72rem;
+  font-weight: 600;
+  padding: 0.15em 0.45em;
+  border-radius: 0.25rem;
+  white-space: nowrap;
+}
+
+.deployment-badge--deployed {
+  background: color-mix(in srgb, var(--success, #22c55e) 15%, transparent);
+  color: var(--success, #16a34a);
+  border: 1px solid color-mix(in srgb, var(--success, #22c55e) 35%, transparent);
+}
+
+.deployment-badge--pending {
+  background: color-mix(in srgb, var(--warn, #f59e0b) 15%, transparent);
+  color: var(--warn, #b45309);
+  border: 1px solid color-mix(in srgb, var(--warn, #f59e0b) 35%, transparent);
+}
+
 .btn-view-logs {
   font-size: 0.72rem;
   font-weight: 600;