Add memory system, dynamic tool loading, and fix logging issues

- Add MemoryStore for persistent long-term and daily notes
- Add dynamic tool summary generation in system prompt
- Fix YAML frontmatter parsing for nanobot skill format
- Add GetSummaries() method to ToolRegistry
- Fix DebugCF logging to use structured metadata
- Improve web_search and shell tool descriptions

pkg/agent/memory.go

@@ -10,12 +10,12 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
-	"strings"
 	"time"
 )
 
 // MemoryStore manages persistent memory for the agent.
-// Supports daily notes (memory/YYYY-MM-DD.md) and long-term memory (MEMORY.md).
+// - Long-term memory: memory/MEMORY.md
+// - Daily notes: memory/YYYYMM/YYYYMMDD.md
 type MemoryStore struct {
 	workspace  string
 	memoryDir  string
@@ -38,23 +38,29 @@ func NewMemoryStore(workspace string) *MemoryStore {
 	}
 }
 
-// getMemoryDir returns the memory directory path.
-func (ms *MemoryStore) getMemoryDir() string {
-	return ms.memoryDir
-}
-
-// getMemoryFile returns the long-term memory file path.
-func (ms *MemoryStore) getMemoryFile() string {
-	return ms.memoryFile
-}
-
-// getTodayFile returns the path to today's memory file (YYYY-MM-DD.md).
+// getTodayFile returns the path to today's daily note file (memory/YYYYMM/YYYYMMDD.md).
 func (ms *MemoryStore) getTodayFile() string {
-	today := time.Now().Format("2006-01-02")
-	return filepath.Join(ms.memoryDir, today+".md")
+	today := time.Now().Format("20060102")      // YYYYMMDD
+	monthDir := today[:6]                       // YYYYMM
+	filePath := filepath.Join(ms.memoryDir, monthDir, today+".md")
+	return filePath
 }
 
-// ReadToday reads today's memory notes.
+// ReadLongTerm reads the long-term memory (MEMORY.md).
+// Returns empty string if the file doesn't exist.
+func (ms *MemoryStore) ReadLongTerm() string {
+	if data, err := os.ReadFile(ms.memoryFile); err == nil {
+		return string(data)
+	}
+	return ""
+}
+
+// WriteLongTerm writes content to the long-term memory file (MEMORY.md).
+func (ms *MemoryStore) WriteLongTerm(content string) error {
+	return os.WriteFile(ms.memoryFile, []byte(content), 0644)
+}
+
+// ReadToday reads today's daily note.
 // Returns empty string if the file doesn't exist.
 func (ms *MemoryStore) ReadToday() string {
 	todayFile := ms.getTodayFile()
@@ -64,11 +70,15 @@ func (ms *MemoryStore) ReadToday() string {
 	return ""
 }
 
-// AppendToday appends content to today's memory notes.
+// AppendToday appends content to today's daily note.
 // If the file doesn't exist, it creates a new file with a date header.
 func (ms *MemoryStore) AppendToday(content string) error {
 	todayFile := ms.getTodayFile()
 
+	// Ensure month directory exists
+	monthDir := filepath.Dir(todayFile)
+	os.MkdirAll(monthDir, 0755)
+
 	var existingContent string
 	if data, err := os.ReadFile(todayFile); err == nil {
 		existingContent = string(data)
@@ -87,46 +97,39 @@ func (ms *MemoryStore) AppendToday(content string) error {
 	return os.WriteFile(todayFile, []byte(newContent), 0644)
 }
 
-// ReadLongTerm reads the long-term memory (MEMORY.md).
-// Returns empty string if the file doesn't exist.
-func (ms *MemoryStore) ReadLongTerm() string {
-	if data, err := os.ReadFile(ms.memoryFile); err == nil {
-		return string(data)
-	}
-	return ""
-}
-
-// WriteLongTerm writes content to the long-term memory file (MEMORY.md).
-func (ms *MemoryStore) WriteLongTerm(content string) error {
-	return os.WriteFile(ms.memoryFile, []byte(content), 0644)
-}
-
-// GetRecentMemories returns memories from the last N days.
-// It reads and combines the contents of memory files from the past days.
+// GetRecentDailyNotes returns daily notes from the last N days.
 // Contents are joined with "---" separator.
-func (ms *MemoryStore) GetRecentMemories(days int) string {
-	var memories []string
+func (ms *MemoryStore) GetRecentDailyNotes(days int) string {
+	var notes []string
 
 	for i := 0; i < days; i++ {
 		date := time.Now().AddDate(0, 0, -i)
-		dateStr := date.Format("2006-01-02")
-		filePath := filepath.Join(ms.memoryDir, dateStr+".md")
+		dateStr := date.Format("20060102")      // YYYYMMDD
+		monthDir := dateStr[:6]                 // YYYYMM
+		filePath := filepath.Join(ms.memoryDir, monthDir, dateStr+".md")
 
 		if data, err := os.ReadFile(filePath); err == nil {
-			memories = append(memories, string(data))
+			notes = append(notes, string(data))
 		}
 	}
 
-	if len(memories) == 0 {
+	if len(notes) == 0 {
 		return ""
 	}
 
-	return strings.Join(memories, "\n\n---\n\n")
+	// Join with separator
+	var result string
+	for i, note := range notes {
+		if i > 0 {
+			result += "\n\n---\n\n"
+		}
+		result += note
+	}
+	return result
 }
 
 // GetMemoryContext returns formatted memory context for the agent prompt.
-// It includes long-term memory and today's notes sections if they exist.
-// Returns empty string if no memory exists.
+// Includes long-term memory and recent daily notes.
 func (ms *MemoryStore) GetMemoryContext() string {
 	var parts []string
 
@@ -136,15 +139,23 @@ func (ms *MemoryStore) GetMemoryContext() string {
 		parts = append(parts, "## Long-term Memory\n\n"+longTerm)
 	}
 
-	// Today's notes
-	today := ms.ReadToday()
-	if today != "" {
-		parts = append(parts, "## Today's Notes\n\n"+today)
+	// Recent daily notes (last 3 days)
+	recentNotes := ms.GetRecentDailyNotes(3)
+	if recentNotes != "" {
+		parts = append(parts, "## Recent Daily Notes\n\n"+recentNotes)
 	}
 
 	if len(parts) == 0 {
 		return ""
 	}
 
-	return strings.Join(parts, "\n\n")
+	// Join parts with separator
+	var result string
+	for i, part := range parts {
+		if i > 0 {
+			result += "\n\n---\n\n"
+		}
+		result += part
+	}
+	return fmt.Sprintf("# Memory\n\n%s", result)
 }