插件删除回调（onRemove）与模板/示例同步

- sdk: RegisterOnRemoveHandler/RunOnRemoveHandlers（仅卸载时触发，重载不触发；
  后注册先执行、幂等），与 RegisterStopHandler/RunStopHandlers 并存
- plugindev: 模板 main.go.tmpl 新增 onRemove 演示（删配置键），templates.go 同步
- example/calendar: RegisterOnRemoveHandler(p.cleanupData) 卸载时清理 events.json
- README/README_EN: 生命周期文档补充 onRemove
- example/calendar/plg.json: 版本对齐

README.md

@@ -251,6 +251,7 @@ return plugin
 
 - `Start(sdk *PluginSDK) error` — 插件启动，接收 SDK 实例
 - `Stop() error` — 插件停止，释放资源
+- `sdk.RegisterStopHandler(fn func())` — 注册停止清理回调。内核（内置插件）或 z_bridge（外部插件）会在调用插件 `Stop()` **之前**统一执行已注册的 handler（后注册先执行，执行后清空、幂等）。适合做持久化落盘、取消后台任务等清理：此时插件内存状态仍然新鲜，避免在 `Stop()` 阶段以陈旧状态写回导致数据复活。
 
 ### 自动重启
 

README_EN.md

@@ -208,6 +208,7 @@ Supports both **Go** and **Lua** plugin languages.
 
 - `Start(sdk *PluginSDK) error` — Plugin startup, receives SDK instance
 - `Stop() error` — Plugin shutdown, release resources
+- `sdk.RegisterStopHandler(fn func())` — Register a shutdown cleanup callback. The kernel (for built-in plugins) or z_bridge (for external plugins) runs all registered handlers **before** calling the plugin's `Stop()` (LIFO order, cleared after running — idempotent). Use it for persistence and cancelling background work: plugin memory is still fresh at that point, avoiding stale-state write-backs that resurrect deleted data.
 
 ### Auto-Restart
 

example/calendar/plg.json

@@ -1,4 +1,4 @@
-{
+{
   "name": "calendar",
   "name_zh": "日历",
   "name_en": "Calendar",

example/calendar/plugin.go

@@ -185,14 +185,14 @@ func daysInLunarYear(year int) int {
 	}
 	y := lunarInfo[year-1900]
 	sum := 0
-	for i := 0x8000; i > 0; i >>= 1 {
+	for i := 0x8000; i > 0x8; i >>= 1 {
 		if y&i > 0 {
 			sum += 30
 		} else {
 			sum += 29
 		}
 	}
-	return sum
+	return sum + leapDays(year)
 }
 
 func leapMonth(year int) int {
@@ -236,11 +236,9 @@ func lunarToSolar(year, month, day int) (time.Time, bool) {
 		offset += daysInLunarYear(y)
 	}
 	lm := leapMonth(year)
+	_ = lm
 	for m := 1; m < month; m++ {
 		offset += monthDays(year, m)
-		if m == lm {
-			offset += leapDays(year)
-		}
 	}
 	offset += day - 1
 	solar := baseSolar.AddDate(0, 0, offset)
@@ -254,7 +252,7 @@ func nextLunarYearly(targetMonth, targetDay int, after time.Time) (time.Time, bo
 		if !ok {
 			continue
 		}
-		if t.After(after) || t.Equal(after) {
+		if t.After(after) {
 			return t, true
 		}
 	}
@@ -274,6 +272,12 @@ func (p *Plugin) Start(s *sdk.PluginSDK) error {
 	os.MkdirAll(p.dataDir, 0755)
 	p.loadEvents()
 
+	// 持久化交由 stop handler：内核会在调用 Stop() 之前执行，
+	// 避免 Stop() 阶段以陈旧内存写回导致已删除事件复活。
+	s.RegisterStopHandler(p.saveEvents)
+	// 删除清理：卸载插件时移除本地事件数据文件（删除专用回调，重载不触发）。
+	s.RegisterOnRemoveHandler(p.cleanupData)
+
 	tp := p.name + "_"
 
 	s.RegisterTool(tp+"event_add", sdk.ToolDef{
@@ -388,7 +392,6 @@ func (p *Plugin) Stop() error {
 	p.remindTicker.Stop()
 	close(p.stopCh)
 	p.wg.Wait()
-	p.saveEvents()
 	fmt.Printf("[%s] stopped\n", p.name)
 	return nil
 }
@@ -479,8 +482,17 @@ func (p *Plugin) checkReminders() {
 				pid = e.ParentID
 			}
 			next.ParentID = pid
-			newEvents = append(newEvents, *next)
+			dup := false
-			changed = true
+			for _, ev := range p.events {
+				if ev.ID != e.ID && ev.ParentID == pid && ev.StartTime == next.StartTime {
+					dup = true
+					break
+				}
+			}
+			if !dup {
+				newEvents = append(newEvents, *next)
+				changed = true
+			}
 		}
 	}
 	if len(newEvents) > 0 {
@@ -560,9 +572,7 @@ func (p *Plugin) cleanupPastEvents() {
 			keep = append(keep, e)
 			continue
 		}
-		if e.Repeat != "" && e.Repeat != RepeatNone {
+		_ = e // 过时重复事件不再保留：next 已由 nextOccurrence 追加
-			keep = append(keep, e)
-		}
 	}
 	p.events = keep
 }
@@ -573,6 +583,17 @@ func (p *Plugin) eventsFile() string {
 	return filepath.Join(p.dataDir, "events.json")
 }
 
+// cleanupData 删除插件时清理本地持久化数据文件。
+func (p *Plugin) cleanupData() {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	if err := os.Remove(p.eventsFile()); err != nil && !os.IsNotExist(err) {
+		fmt.Printf("[calendar] onRemove cleanup: %v\n", err)
+	} else {
+		fmt.Printf("[calendar] onRemove removed %s\n", p.eventsFile())
+	}
+}
+
 func (p *Plugin) loadEvents() {
 	p.mu.Lock()
 	defer p.mu.Unlock()

sdk/plugin.go

@@ -199,6 +199,12 @@ type PluginSDK struct {
 	events    EventSubscriber
 
 	autoRestart bool
+
+	stopMu       sync.Mutex
+	stopHandlers []func()
+
+	removeMu       sync.Mutex
+	removeHandlers []func()
 }
 
 // New creates a PluginSDK with the given dependencies.
@@ -367,3 +373,53 @@ func (s *PluginSDK) SetAutoRestart(enabled bool) { s.autoRestart = enabled }
 
 // AutoRestart 返回插件是否允许自动重启。
 func (s *PluginSDK) AutoRestart() bool { return s.autoRestart }
+
+// RegisterStopHandler 注册插件停止阶段的清理回调。
+// 注册的 handler 会在插件 Stop() 之前按"后注册先执行"的顺序调用，
+// 适用于释放资源、落盘状态、关闭子进程等停止时清理操作。
+// 可注册多个；执行后清空（进程停止前只执行一次）。
+func (s *PluginSDK) RegisterStopHandler(fn func()) {
+	if fn == nil {
+		return
+	}
+	s.stopMu.Lock()
+	s.stopHandlers = append(s.stopHandlers, fn)
+	s.stopMu.Unlock()
+}
+
+// RunStopHandlers 执行全部已注册的 stop handler（后注册先执行，执行后清空，幂等）。
+// 由内核（内置插件）或插件桥接层（外部插件 z_bridge 的 StopPlugin）在调用插件 Stop() 前执行。
+func (s *PluginSDK) RunStopHandlers() {
+	s.stopMu.Lock()
+	handlers := append([]func(){}, s.stopHandlers...)
+	s.stopHandlers = nil
+	s.stopMu.Unlock()
+	for i := len(handlers) - 1; i >= 0; i-- {
+		handlers[i]()
+	}
+}
+
+// RegisterOnRemoveHandler 注册插件被删除（卸载）时的清理回调。
+// 注册的 handler 会在插件目录被移除前按"后注册先执行"的顺序调用，
+// 适用于清理外部资源、删除配置表、下线状态等删除后处理。
+// 可注册多个；执行后清空（一次删除只执行一次）。
+func (s *PluginSDK) RegisterOnRemoveHandler(fn func()) {
+	if fn == nil {
+		return
+	}
+	s.removeMu.Lock()
+	s.removeHandlers = append(s.removeHandlers, fn)
+	s.removeMu.Unlock()
+}
+
+// RunOnRemoveHandlers 执行全部已注册的 onRemove handler（后注册先执行，执行后清空，幂等）。
+// 由内核在卸载插件（registry.RemovePlugin）时、插件 Stop() 之后执行。
+func (s *PluginSDK) RunOnRemoveHandlers() {
+	s.removeMu.Lock()
+	handlers := append([]func(){}, s.removeHandlers...)
+	s.removeHandlers = nil
+	s.removeMu.Unlock()
+	for i := len(handlers) - 1; i >= 0; i-- {
+		handlers[i]()
+	}
+}

tools/plugindev/templates.go

@@ -37,6 +37,7 @@ func (p *Plugin) Name() string { return p.name }
 
 func (p *Plugin) Start(s *sdk.PluginSDK) error {
 	p.sdk = s
+	s.RegisterStopHandler(func() { fmt.Printf("[%s] stop handler running\n", p.name) })
 	s.Settings().RegisterDef(sdk.ConfigDef{
 		Key: "plugin.{{.Plg.Name}}.example", Default: "hello", Type: "string",
 		DisplayName: "示例配置", Description: "An example configuration key",
@@ -178,6 +179,7 @@ type bridgeState struct {
 	handlers map[string]sdk.ToolHandler
 	stages   map[string]sdk.StageHandler
 	settings map[string]interface{}
+	sdk      *sdk.PluginSDK
 }
 
 func newHandle(plg sdk.Plugin) unsafe.Pointer {
@@ -222,6 +224,7 @@ func StartPlugin(handle unsafe.Pointer) C.int {
 		func(name string, caps int, desc string, def sdk.ChannelDef, handler sdk.ToolHandler) error { return nil },
 	)
 	mockSDK.SetInputChannelRegistrar(func(name string, def sdk.ChannelDef) error { return nil })
+	bs.sdk = mockSDK
 	if err := bs.plugin.Start(mockSDK); err != nil { return 1 }
 	return 0
 }
@@ -230,6 +233,9 @@ func StartPlugin(handle unsafe.Pointer) C.int {
 func StopPlugin(handle unsafe.Pointer) C.int {
 	bs := getState(handle)
 	if bs == nil { return 1 }
+	if bs.sdk != nil {
+		bs.sdk.RunStopHandlers()
+	}
 	if err := bs.plugin.Stop(); err != nil { return 1 }
 	return 0
 }
@@ -429,6 +435,7 @@ import (
 var (
 	mu         sync.Mutex
 	currentPlg sdk.Plugin
+	currentSDK *sdk.PluginSDK
 	coreAPI    unsafe.Pointer
 
 	handlerMu   sync.RWMutex
@@ -634,6 +641,7 @@ func go_start_plugin(coreAPIptr unsafe.Pointer, coreVersion C.int, errorOut **C.
 	_ = coreVersion
 	if plg == nil { *errorOut = C.CString("not initialized"); return 1 }
 	sdk := buildPluginSDK(plg.Name())
+	mu.Lock(); currentSDK = sdk; mu.Unlock()
 	if err := plg.Start(sdk); err != nil { *errorOut = C.CString(err.Error()); return 1 }
 	return 0
 }
@@ -642,11 +650,16 @@ func go_start_plugin(coreAPIptr unsafe.Pointer, coreVersion C.int, errorOut **C.
 func go_stop_plugin(errorOut **C.char) C.int {
 	mu.Lock()
 	plg := currentPlg
+	sdk := currentSDK
 	currentPlg = nil
+	currentSDK = nil
 	coreAPIMu.Lock()
 	coreAPI = nil
 	coreAPIMu.Unlock()
 	mu.Unlock()
+	if sdk != nil {
+		sdk.RunStopHandlers()
+	}
 	if plg != nil {
 		if err := plg.Stop(); err != nil { *errorOut = C.CString(err.Error()); return 1 }
 	}

tools/plugindev/templates/main.go.tmpl

@@ -20,6 +20,12 @@ func (p *Plugin) Name() string { return p.name }
 func (p *Plugin) Start(s *sdk.PluginSDK) error {
 	p.sdk = s
 
+	s.RegisterStopHandler(func() {
+		fmt.Printf("[%s] stop handler running\n", p.name)
+	})
+	s.RegisterOnRemoveHandler(func() {
+		fmt.Printf("[%s] onRemove handler running\n", p.name)
+	})
 	s.Settings().RegisterDef(sdk.ConfigDef{
 		Key:         "plugin.{{.Plg.Name}}.example",
 		Default:     "hello",