fix(cron): add one-time reminders and fix data paths to workspace

- Add at_seconds parameter for one-time reminders (e.g., "remind me in 10 minutes")
- Update every_seconds description to emphasize recurring-only usage
- Route cron delivery: deliver=true sends directly, deliver=false uses agent
- Fix cron data path from ~/.picoclaw/cron to workspace/cron
- Fix sessions path from workspace/../sessions to workspace/sessions

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

pkg/agent/context.go

@@ -69,8 +69,13 @@ Your workspace is at: %s
 
 %s
 
-Always be helpful, accurate, and concise. When using tools, explain what you're doing.
-When remembering something, write to %s/memory/MEMORY.md`,
+## Important Rules
+
+1. **ALWAYS use tools** - When you need to perform an action (schedule reminders, send messages, execute commands, etc.), you MUST call the appropriate tool. Do NOT just say you'll do it or pretend to do it.
+
+2. **Be helpful and accurate** - When using tools, briefly explain what you're doing.
+
+3. **Memory** - When remembering something, write to %s/memory/MEMORY.md`,
 		now, runtime, workspacePath, workspacePath, workspacePath, workspacePath, toolsSection, workspacePath)
 }
 
@@ -86,6 +91,7 @@ func (cb *ContextBuilder) buildToolsSection() string {
 
 	var sb strings.Builder
 	sb.WriteString("## Available Tools\n\n")
+	sb.WriteString("**CRITICAL**: You MUST use tools to perform actions. Do NOT pretend to execute commands or schedule tasks.\n\n")
 	sb.WriteString("You have access to the following tools:\n\n")
 	for _, s := range summaries {
 		sb.WriteString(s)

pkg/agent/loop.go

@@ -69,7 +69,7 @@ func NewAgentLoop(cfg *config.Config, msgBus *bus.MessageBus, provider providers
 	editFileTool := tools.NewEditFileTool(workspace)
 	toolsRegistry.Register(editFileTool)
 
-	sessionsManager := session.NewSessionManager(filepath.Join(filepath.Dir(cfg.WorkspacePath()), "sessions"))
+	sessionsManager := session.NewSessionManager(filepath.Join(workspace, "sessions"))
 
 	return &AgentLoop{
 		bus:            msgBus,
@@ -179,6 +179,9 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
 		msg.ChatID,
 	)
 
+	// Save user message to session
+	al.sessions.AddMessage(msg.SessionKey, "user", msg.Content)
+
 	iteration := 0
 	var finalContent string
 
@@ -277,6 +280,9 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
 		}
 		messages = append(messages, assistantMsg)
 
+		// Save assistant message with tool calls to session
+		al.sessions.AddFullMessage(msg.SessionKey, assistantMsg)
+
 		for _, tc := range response.ToolCalls {
 			// Log tool call with arguments preview
 			argsJSON, _ := json.Marshal(tc.Arguments)
@@ -287,7 +293,7 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
 					"iteration":  iteration,
 				})
 
-			result, err := al.tools.Execute(ctx, tc.Name, tc.Arguments)
+			result, err := al.tools.ExecuteWithContext(ctx, tc.Name, tc.Arguments, msg.Channel, msg.ChatID)
 			if err != nil {
 				result = fmt.Sprintf("Error: %v", err)
 			}
@@ -298,6 +304,9 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
 				ToolCallID: tc.ID,
 			}
 			messages = append(messages, toolResultMsg)
+
+			// Save tool result message to session
+			al.sessions.AddFullMessage(msg.SessionKey, toolResultMsg)
 		}
 	}
 
@@ -305,7 +314,7 @@ func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage)
 		finalContent = "I've completed processing but have no response to give."
 	}
 
-	al.sessions.AddMessage(msg.SessionKey, "user", msg.Content)
+	// Save final assistant message to session
 	al.sessions.AddMessage(msg.SessionKey, "assistant", finalContent)
 	al.sessions.Save(al.sessions.GetOrCreate(msg.SessionKey))
 
@@ -370,6 +379,9 @@ func (al *AgentLoop) processSystemMessage(ctx context.Context, msg bus.InboundMe
 		originChatID,
 	)
 
+	// Save user message to session with system message marker
+	al.sessions.AddMessage(sessionKey, "user", fmt.Sprintf("[System: %s] %s", msg.SenderID, msg.Content))
+
 	iteration := 0
 	var finalContent string
 
@@ -446,6 +458,9 @@ func (al *AgentLoop) processSystemMessage(ctx context.Context, msg bus.InboundMe
 		}
 		messages = append(messages, assistantMsg)
 
+		// Save assistant message with tool calls to session
+		al.sessions.AddFullMessage(sessionKey, assistantMsg)
+
 		for _, tc := range response.ToolCalls {
 			result, err := al.tools.ExecuteWithContext(ctx, tc.Name, tc.Arguments, msg.Channel, msg.ChatID)
 			if err != nil {
@@ -458,6 +473,9 @@ func (al *AgentLoop) processSystemMessage(ctx context.Context, msg bus.InboundMe
 				ToolCallID: tc.ID,
 			}
 			messages = append(messages, toolResultMsg)
+
+			// Save tool result message to session
+			al.sessions.AddFullMessage(sessionKey, toolResultMsg)
 		}
 	}
 
@@ -465,8 +483,7 @@ func (al *AgentLoop) processSystemMessage(ctx context.Context, msg bus.InboundMe
 		finalContent = "Background task completed."
 	}
 
-	// Save to session with system message marker
-	al.sessions.AddMessage(sessionKey, "user", fmt.Sprintf("[System: %s] %s", msg.SenderID, msg.Content))
+	// Save final assistant message to session
 	al.sessions.AddMessage(sessionKey, "assistant", finalContent)
 	al.sessions.Save(al.sessions.GetOrCreate(sessionKey))
 
@@ -476,6 +493,13 @@ func (al *AgentLoop) processSystemMessage(ctx context.Context, msg bus.InboundMe
 			"final_length": len(finalContent),
 		})
 
+	// Send response back to the original channel
+	al.bus.PublishOutbound(bus.OutboundMessage{
+		Channel: originChannel,
+		ChatID:  originChatID,
+		Content: finalContent,
+	})
+
 	return finalContent, nil
 }
 

pkg/channels/base.go

@@ -61,7 +61,7 @@ func (c *BaseChannel) HandleMessage(senderID, chatID, content string, media []st
 		return
 	}
 
-	// 生成 SessionKey: channel:chatID
+	// Build session key: channel:chatID
 	sessionKey := fmt.Sprintf("%s:%s", c.name, chatID)
 
 	msg := bus.InboundMessage{
@@ -70,8 +70,9 @@ func (c *BaseChannel) HandleMessage(senderID, chatID, content string, media []st
 		ChatID:     chatID,
 		Content:    content,
 		Media:      media,
-		Metadata:   metadata,
 		SessionKey: sessionKey,
+		Metadata:   metadata,
+	}
 	}
 
 	c.bus.PublishInbound(msg)

pkg/session/manager.go

@@ -59,6 +59,15 @@ func (sm *SessionManager) GetOrCreate(key string) *Session {
 }
 
 func (sm *SessionManager) AddMessage(sessionKey, role, content string) {
+	sm.AddFullMessage(sessionKey, providers.Message{
+		Role:    role,
+		Content: content,
+	})
+}
+
+// AddFullMessage adds a complete message with tool calls and tool call ID to the session.
+// This is used to save the full conversation flow including tool calls and tool results.
+func (sm *SessionManager) AddFullMessage(sessionKey string, msg providers.Message) {
 	sm.mu.Lock()
 	defer sm.mu.Unlock()
 
@@ -72,10 +81,7 @@ func (sm *SessionManager) AddMessage(sessionKey, role, content string) {
 		sm.sessions[sessionKey] = session
 	}
 
-	session.Messages = append(session.Messages, providers.Message{
-		Role:    role,
-		Content: content,
-	})
+	session.Messages = append(session.Messages, msg)
 	session.Updated = time.Now()
 }
 

pkg/tools/cron.go

@@ -4,7 +4,9 @@ import (
 	"context"
 	"fmt"
 	"sync"
+	"time"
 
+	"github.com/sipeed/picoclaw/pkg/bus"
 	"github.com/sipeed/picoclaw/pkg/cron"
 )
 
@@ -24,16 +26,18 @@ type JobExecutor interface {
 type CronTool struct {
 	cronService *cron.CronService
 	executor    JobExecutor
+	msgBus      *bus.MessageBus
 	channel     string
 	chatID      string
 	mu          sync.RWMutex
 }
 
 // NewCronTool creates a new CronTool
-func NewCronTool(cronService *cron.CronService, executor JobExecutor) *CronTool {
+func NewCronTool(cronService *cron.CronService, executor JobExecutor, msgBus *bus.MessageBus) *CronTool {
 	return &CronTool{
 		cronService: cronService,
 		executor:    executor,
+		msgBus:      msgBus,
 	}
 }
 
@@ -44,7 +48,7 @@ func (t *CronTool) Name() string {
 
 // Description returns the tool description
 func (t *CronTool) Description() string {
-	return "Schedule reminders and recurring tasks. Actions: add, list, remove, enable, disable."
+	return "Schedule reminders and tasks. IMPORTANT: When user asks to be reminded or scheduled, you MUST call this tool. Use 'at_seconds' for one-time reminders (e.g., 'remind me in 10 minutes' → at_seconds=600). Use 'every_seconds' ONLY for recurring tasks (e.g., 'every 2 hours' → every_seconds=7200). Use 'cron_expr' for complex recurring schedules (e.g., '0 9 * * *' for daily at 9am)."
 }
 
 // Parameters returns the tool parameters schema
@@ -55,24 +59,32 @@ func (t *CronTool) Parameters() map[string]interface{} {
 			"action": map[string]interface{}{
 				"type":        "string",
 				"enum":        []string{"add", "list", "remove", "enable", "disable"},
-				"description": "Action to perform",
+				"description": "Action to perform. Use 'add' when user wants to schedule a reminder or task.",
 			},
 			"message": map[string]interface{}{
 				"type":        "string",
-				"description": "Reminder message (for add)",
+				"description": "The reminder/task message to display when triggered (required for add)",
+			},
+			"at_seconds": map[string]interface{}{
+				"type":        "integer",
+				"description": "One-time reminder: seconds from now when to trigger (e.g., 600 for 10 minutes later). Use this for one-time reminders like 'remind me in 10 minutes'.",
 			},
 			"every_seconds": map[string]interface{}{
 				"type":        "integer",
-				"description": "Interval in seconds for recurring tasks",
+				"description": "Recurring interval in seconds (e.g., 3600 for every hour). Use this ONLY for recurring tasks like 'every 2 hours' or 'daily reminder'.",
 			},
 			"cron_expr": map[string]interface{}{
 				"type":        "string",
-				"description": "Cron expression like '0 9 * * *' for scheduled tasks",
+				"description": "Cron expression for complex recurring schedules (e.g., '0 9 * * *' for daily at 9am). Use this for complex recurring schedules.",
 			},
 			"job_id": map[string]interface{}{
 				"type":        "string",
 				"description": "Job ID (for remove/enable/disable)",
 			},
+			"deliver": map[string]interface{}{
+				"type":        "boolean",
+				"description": "If true, send message directly to channel. If false, let agent process the message (for complex tasks). Default: true",
+			},
 		},
 		"required": []string{"action"},
 	}
@@ -126,32 +138,44 @@ func (t *CronTool) addJob(args map[string]interface{}) (string, error) {
 
 	var schedule cron.CronSchedule
 
-	// Check for every_seconds
+	// Check for at_seconds (one-time), every_seconds (recurring), or cron_expr
+	atSeconds, hasAt := args["at_seconds"].(float64)
 	everySeconds, hasEvery := args["every_seconds"].(float64)
 	cronExpr, hasCron := args["cron_expr"].(string)
 
-	if !hasEvery && !hasCron {
-		return "Error: either every_seconds or cron_expr is required", nil
-	}
-
-	if hasEvery {
+	// Priority: at_seconds > every_seconds > cron_expr
+	if hasAt {
+		atMS := time.Now().UnixMilli() + int64(atSeconds)*1000
+		schedule = cron.CronSchedule{
+			Kind: "at",
+			AtMS: &atMS,
+		}
+	} else if hasEvery {
 		everyMS := int64(everySeconds) * 1000
 		schedule = cron.CronSchedule{
 			Kind:    "every",
 			EveryMS: &everyMS,
 		}
-	} else {
+	} else if hasCron {
 		schedule = cron.CronSchedule{
 			Kind: "cron",
 			Expr: cronExpr,
 		}
+	} else {
+		return "Error: one of at_seconds, every_seconds, or cron_expr is required", nil
+	}
+
+	// Read deliver parameter, default to true
+	deliver := true
+	if d, ok := args["deliver"].(bool); ok {
+		deliver = d
 	}
 
 	job, err := t.cronService.AddJob(
 		truncateString(message, 30),
 		schedule,
 		message,
-		true, // deliver
+		deliver,
 		channel,
 		chatID,
 	)
@@ -231,6 +255,17 @@ func (t *CronTool) ExecuteJob(ctx context.Context, job *cron.CronJob) string {
 		chatID = "direct"
 	}
 
+	// If deliver=true, send message directly without agent processing
+	if job.Payload.Deliver {
+		t.msgBus.PublishOutbound(bus.OutboundMessage{
+			Channel: channel,
+			ChatID:  chatID,
+			Content: job.Payload.Message,
+		})
+		return "ok"
+	}
+
+	// For deliver=false, process through agent (for complex tasks)
 	sessionKey := fmt.Sprintf("cron-%s", job.ID)
 
 	// Call agent with the job's message