feat: HH-773 合集重命名接入 egress geo 缓存、geo 失败降级与每小时补探测

- service: EgressCacheKey 从 handler 下沉复用；MergeCachedEgressGeo 在合集
  重命名前合并缓存 geo 字段（纯缓存读、零网络 I/O）；StripEgressGeoFields
  防止 geo 字段泄漏进订阅输出
- filter: geo 检测失败的节点保留 '[别名] 原名'（或纯原名）参与编号/排序，
  不再丢弃
- handler: 每小时 StartEgressRefresher 对启用源补探测缺失/过期的 egress
  缓存（含 TTL 内 error 结果一律跳过）；RegisterRoutes 返回 *Deps；
  cmd/server.go 启动定时任务并在 shutdown 时取消
- tests: service 缓存 key 稳定性/合并/管道测试、handler 补探测跳过/TTL/
  过期/取消测试、filter 降级测试；修复 2 个过时测试（mihomo YAML 配置、
  缓存命中路径）

internal/handler/handler_test.go

@@ -14,11 +14,13 @@ import (
 
 	"github.com/gofiber/fiber/v3"
 	"github.com/jmoiron/sqlx"
+	"gopkg.in/yaml.v3"
 	_ "modernc.org/sqlite"
 
 	"github.com/peterqiu0516/sub-store/internal/config"
 	"github.com/peterqiu0516/sub-store/internal/database"
 	"github.com/peterqiu0516/sub-store/internal/model"
+	"github.com/peterqiu0516/sub-store/internal/service"
 	"github.com/peterqiu0516/sub-store/internal/template"
 )
 
@@ -2127,25 +2129,42 @@ func TestBuildEgressProbeConfig(t *testing.T) {
 	if err != nil {
 		t.Fatalf("buildEgressProbeConfig returned error: %v", err)
 	}
+	// The probe config is a minimal mihomo (Clash Meta) YAML.
 	var doc map[string]any
-	if err := json.Unmarshal(data, &doc); err != nil {
-		t.Fatalf("invalid config JSON: %v", err)
+	if err := yaml.Unmarshal(data, &doc); err != nil {
+		t.Fatalf("invalid config YAML: %v", err)
 	}
-	route := doc["route"].(map[string]any)
-	if route["final"] != "PROXY" {
-		t.Fatalf("route.final = %v, want PROXY", route["final"])
+	if port, _ := doc["mixed-port"].(int); port != 19090 {
+		t.Fatalf("mixed-port = %v, want 19090", doc["mixed-port"])
 	}
-	inbound := doc["inbounds"].([]any)[0].(map[string]any)
-	if inbound["listen"] != "127.0.0.1" || inbound["listen_port"].(float64) != 19090 {
-		t.Fatalf("unexpected inbound: %v", inbound)
+	proxies, _ := doc["proxies"].([]any)
+	if len(proxies) != 1 {
+		t.Fatalf("proxies = %v, want 1 entry", doc["proxies"])
+	}
+	proxyMap, _ := proxies[0].(map[string]any)
+	if proxyMap["name"] != "PROXY" || proxyMap["server"] != "127.0.0.1" || proxyMap["cipher"] != "aes-256-gcm" {
+		t.Fatalf("unexpected probe proxy: %v", proxyMap)
+	}
+	groups, _ := doc["proxy-groups"].([]any)
+	group, _ := groups[0].(map[string]any)
+	if group["type"] != "select" {
+		t.Fatalf("proxy-group type = %v, want select", group["type"])
 	}
 }
 
-func TestHandleEgressInfoUnsupported(t *testing.T) {
+func TestHandleEgressInfoCacheHit(t *testing.T) {
 	deps := newTestDeps(t)
 	app := newApp(deps)
-	code, _ := doRequest(t, app, "POST", "/api/utils/egress-info", `{"type":"unknown","server":"1.2.3.4","port":443}`, nil)
-	assertStatus(t, "EgressInfo unsupported", code, 400)
+	// Any node type is probed now; a cached result must short-circuit before
+	// any probing so the response is deterministic without network access.
+	deps.CacheRepo.SafePut(service.EgressCacheKey(model.ProxyNode{"type": "ss", "server": "1.2.3.4", "port": 8388}),
+		`{"egressIp":"1.1.1.1","country":"Japan","latencyMs":12}`, nil, 300)
+	code, out := doRequest(t, app, "POST", "/api/utils/egress-info", `{"type":"ss","server":"1.2.3.4","port":8388}`, nil)
+	assertStatus(t, "EgressInfo cache hit", code, 200)
+	data, _ := out["data"].(map[string]any)
+	if data["egressIp"] != "1.1.1.1" || data["cached"] != true {
+		t.Fatalf("unexpected cached egress response: %v", data)
+	}
 }
 
 func TestProbeServerPortLatency(t *testing.T) {
@@ -2180,7 +2199,7 @@ func TestAddCachedEgressInfo(t *testing.T) {
 		"server": "127.0.0.1",
 		"port":   8388,
 	}
-	deps.CacheRepo.SafePut(egressCacheKey(node), `{"egressIp":"1.1.1.1","country":"Japan","region":"Tokyo","latencyMs":12}`, nil, 300)
+	deps.CacheRepo.SafePut(service.EgressCacheKey(node), `{"egressIp":"1.1.1.1","country":"Japan","region":"Tokyo","latencyMs":12}`, nil, 300)
 	nodes := deps.addCachedEgressInfo([]model.ProxyNode{node})
 	if nodes[0]["egressIp"] != "1.1.1.1" || nodes[0]["latencyMs"].(float64) != 12 {
 		t.Fatalf("cached egress not merged: %v", nodes[0])