feat: add Cobra CLI, LSP/MCP registries, workflow engine, and enriched dashboard

Major changes:
- Refactor CLI entry point to Cobra commands (root, setup, scan, doctor, install, update, lsp, mcp, skills, config, version)
- Add LSP registry with health checks, auto-install, and editor config generation
- Add MCP registry with editor detection, status tracking, and per-editor configuration
- Add workflow engine with planner and step execution for automated task chains
- Add conversation search, export (Markdown/JSON), and detailed token counting
- Add streaming shell chat handler with tool call/result events
- Add skill validation, dry-run testing, and export endpoints
- Enrich dashboard with Tools/Activity/Status tabs and tool cards grid
- Add PRD documentation
- Complete i18n for both EN and FR

💘 Generated with Crush

Assisted-by: GLM-5.1 via Crush <crush@charm.land>

internal/api/conversation.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"strings"
 	"sync"
 	"time"
 	"unicode/utf8"
@@ -36,6 +37,19 @@ type ConversationStore struct {
 	conv *Conversation
 }
 
+type TokenCount struct {
+	total     int
+	byRole    map[string]int
+	byMessage int
+}
+
+type SearchResult struct {
+	ID      string `json:"id"`
+	Role    string `json:"role"`
+	Content string `json:"content"`
+	Time    string `json:"time"`
+}
+
 func NewConversationStore() *ConversationStore {
 	dir, err := config.ConfigDir()
 	if err != nil {
@@ -140,19 +154,109 @@ func (cs *ConversationStore) TrimOld(keepCount int) {
 }
 
 func (cs *ConversationStore) ApproxTokenCount() int {
+	return cs.ApproxTokenCountDetailed().total
+}
+
+func (cs *ConversationStore) ApproxTokenCountDetailed() TokenCount {
 	cs.mu.RLock()
 	defer cs.mu.RUnlock()
-	total := utf8.RuneCountInString(cs.conv.Summary)
-	for _, m := range cs.conv.Messages {
-		total += utf8.RuneCountInString(m.Content)
+
+	result := TokenCount{
+		byRole: make(map[string]int),
 	}
-	return total / charsPerToken
+
+	for _, m := range cs.conv.Messages {
+		count := utf8.RuneCountInString(m.Content) / charsPerToken
+		result.byMessage += count
+		result.byRole[m.Role] += count
+	}
+
+	if cs.conv.Summary != "" {
+		result.total = result.byMessage + utf8.RuneCountInString(cs.conv.Summary)/charsPerToken
+	} else {
+		result.total = result.byMessage
+	}
+
+	return result
 }
 
 func (cs *ConversationStore) NeedsSummarization() bool {
 	return cs.ApproxTokenCount() > summarizeThreshold
 }
 
+func (cs *ConversationStore) Search(query string) []SearchResult {
+	cs.mu.RLock()
+	defer cs.mu.RUnlock()
+
+	var results []SearchResult
+	queryLower := strings.ToLower(query)
+
+	for _, msg := range cs.conv.Messages {
+		if strings.Contains(strings.ToLower(msg.Content), queryLower) {
+			results = append(results, SearchResult{
+				ID:      msg.ID,
+				Role:    msg.Role,
+				Content: msg.Content,
+				Time:    msg.Time,
+			})
+		}
+	}
+
+	return results
+}
+
+func (cs *ConversationStore) ExportMarkdown() string {
+	cs.mu.RLock()
+	defer cs.mu.RUnlock()
+
+	var sb strings.Builder
+	sb.WriteString("# Conversation Export\n\n")
+	sb.WriteString(fmt.Sprintf("Exporté le: %s\n\n", time.Now().Format(time.RFC3339)))
+
+	if cs.conv.Summary != "" {
+		sb.WriteString("## Résumé\n\n")
+		sb.WriteString(cs.conv.Summary)
+		sb.WriteString("\n\n---\n\n")
+	}
+
+	sb.WriteString("## Messages\n\n")
+
+	for i, msg := range cs.conv.Messages {
+		roleLabel := msg.Role
+		if roleLabel == "user" {
+			roleLabel = "👤 Utilisateur"
+		} else if roleLabel == "assistant" {
+			roleLabel = "🤖 Assistant"
+		} else if roleLabel == "system" {
+			roleLabel = "⚙️ Système"
+		}
+
+		timestamp := ""
+		if msg.Time != "" {
+			if t, err := time.Parse(time.RFC3339, msg.Time); err == nil {
+				timestamp = t.Format("2006-01-02 15:04")
+			}
+		}
+
+		sb.WriteString(fmt.Sprintf("### [%d] %s (%s)\n\n", i+1, roleLabel, timestamp))
+		sb.WriteString(msg.Content)
+		sb.WriteString("\n\n---\n\n")
+	}
+
+	return sb.String()
+}
+
+func (cs *ConversationStore) ExportJSON() string {
+	cs.mu.RLock()
+	defer cs.mu.RUnlock()
+
+	data, err := json.MarshalIndent(cs.conv, "", "  ")
+	if err != nil {
+		return "{}"
+	}
+	return string(data)
+}
+
 func generateMsgID() string {
 	return time.Now().Format("20060102150405.000") + "-" + fmt.Sprintf("%d", time.Now().UnixNano())
-}
+}