feat: journal UX overhaul — picker, export dialog, events, readability

- Sidebar i18n: added missing nav.journal to backend ru.json
- Export: SaveWorklogReport binding with native SaveFileDialog + os.WriteFile
- Filter: better IncludeChildren label with disabled tooltip
- Filter: renamed billable→К оплате, approximate→Тип времени with hints
- worklog_entry_events table (migration 013) linking entries to activity events
- Suggestion: EventIDs + Events details, expandable cards with timestamps
- Journal rows: expandable with details, source, linked events
- Contrast: improved readability for dates, timestamps, hover states
- i18n: added worklog.*, journal.*, suggest.* keys to ru.js/en.js

cmd/verstak-gui/bindings_suggest.go

@@ -60,6 +60,21 @@ func (a *App) GetSuggestions() ([]activity.Suggestion, error) {
 		min := estimateMinutes(bursts, spread, len(grp.events))
 		conf, reason := confidence(bursts, spread, len(grp.events))
 
+		eventIDs := make([]string, 0, len(grp.events))
+		evDetails := make([]activity.SuggestionDetail, 0, len(grp.events))
+		for _, e := range grp.events {
+			eventIDs = append(eventIDs, e.ID)
+			evDetails = append(evDetails, activity.SuggestionDetail{
+				ID:         e.ID,
+				EventType:  e.EventType,
+				TargetType: e.TargetType,
+				TargetID:   e.TargetID,
+				Title:      e.Title,
+				CreatedAt:  e.CreatedAt,
+				NodeID:     e.NodeID,
+			})
+		}
+
 		suggestions = append(suggestions, activity.Suggestion{
 			NodeID:           nodeID,
 			NodeTitle:        grp.title,
@@ -70,6 +85,8 @@ func (a *App) GetSuggestions() ([]activity.Suggestion, error) {
 			Confidence:       conf,
 			ConfidenceReason: reason,
 			TimeSpreadMin:    spread,
+			EventIDs:         eventIDs,
+			Events:           evDetails,
 		})
 	}
 
@@ -95,6 +112,12 @@ func (a *App) AcceptSuggestionWith(s activity.Suggestion, minutes int, date stri
 	if err != nil {
 		return nil, err
 	}
+	// Link activity events to this worklog entry.
+	for _, eid := range s.EventIDs {
+		_, _ = a.db.Exec(
+			`INSERT OR IGNORE INTO worklog_entry_events (entry_id, event_id) VALUES (?,?)`,
+			entry.ID, eid)
+	}
 	_ = a.sync.RecordOp(syncsvc.EntityWorklog, entry.ID, syncsvc.OpCreate, worklogPayload(entry))
 	mins := 0
 	if entry.Minutes != nil {

cmd/verstak-gui/bindings_worklog.go

@@ -1,8 +1,13 @@
 package main
 
 import (
-	syncsvc "verstak/internal/core/sync"
+	"fmt"
+	"os"
+
+	wailsruntime "github.com/wailsapp/wails/v2/pkg/runtime"
+
 	"verstak/internal/core/worklog"
+	syncsvc "verstak/internal/core/sync"
 )
 
 func (a *App) ListWorklog(nodeID string) ([]WorklogDTO, error) {
@@ -90,6 +95,94 @@ func buildWorklogFilter(dateFrom, dateTo, nodeID string, includeChildren bool, b
 	}
 }
 
+// SaveWorklogReport generates a worklog report and opens a SaveFileDialog.
+func (a *App) SaveWorklogReport(format, dateFrom, dateTo, nodeID string, includeChildren bool, billableFilter, approxFilter string) (string, error) {
+	f := buildWorklogFilter(dateFrom, dateTo, nodeID, includeChildren, billableFilter, approxFilter)
+
+	var data []byte
+	var ext string
+	switch format {
+	case "csv":
+		s, err := a.worklog.ExportCSV(f)
+		if err != nil {
+			return "", err
+		}
+		data = []byte(s)
+		ext = ".csv"
+	case "markdown":
+		s, err := a.worklog.ExportMarkdown(f)
+		if err != nil {
+			return "", err
+		}
+		data = []byte(s)
+		ext = ".md"
+	case "pdf":
+		var err error
+		data, err = a.worklog.ExportPDF(f)
+		if err != nil {
+			return "", err
+		}
+		ext = ".pdf"
+	default:
+		return "", fmt.Errorf("unknown format: %s", format)
+	}
+
+	from := dateFrom
+	if from == "" {
+		from = "all"
+	}
+	to := dateTo
+	if to == "" {
+		to = "all"
+	}
+	defaultName := fmt.Sprintf("verstak-worklog-%s--%s%s", from, to, ext)
+
+	path, err := wailsruntime.SaveFileDialog(a.ctx, wailsruntime.SaveDialogOptions{
+		DefaultFilename: defaultName,
+		Filters: []wailsruntime.FileFilter{
+			{DisplayName: format, Pattern: "*" + ext},
+		},
+	})
+	if err != nil {
+		return "", err
+	}
+	if path == "" {
+		return "", fmt.Errorf("отменено пользователем")
+	}
+
+	if err := os.WriteFile(path, data, 0o644); err != nil {
+		return "", fmt.Errorf("не удалось сохранить файл: %w", err)
+	}
+
+	return fmt.Sprintf("Отчёт сохранён: %s", path), nil
+}
+
+// GetWorklogEntryEvents returns activity events linked to a worklog entry.
+func (a *App) GetWorklogEntryEvents(entryID string) ([]EventDTO, error) {
+	rows, err := a.db.Query(
+		`SELECT e.id, e.node_id, e.event_type, e.target_type, e.target_id, e.target_path,
+			e.title, e.details_json, e.created_at
+		 FROM activity_events e
+		 JOIN worklog_entry_events wle ON wle.event_id = e.id
+		 WHERE wle.entry_id = ?
+		 ORDER BY e.created_at ASC`, entryID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var out []EventDTO
+	for rows.Next() {
+		var d EventDTO
+		if err := rows.Scan(&d.ID, &d.NodeID, &d.EventType, &d.TargetType,
+			&d.TargetID, &d.TargetPath, &d.Title, &d.DetailsJSON, &d.CreatedAt); err != nil {
+			return nil, err
+		}
+		out = append(out, d)
+	}
+	return out, rows.Err()
+}
+
 // --- helpers ---
 
 func toWorklogDTOs(list []worklog.Entry) []WorklogDTO {

cmd/verstak-gui/frontend-dist/index.html

@@ -16,8 +16,8 @@
       background: #13131f;
     }
   </style>
-  <script type="module" crossorigin src="/assets/main-BYxU8Qbt.js"></script>
-  <link rel="stylesheet" crossorigin href="/assets/main-C7UPiZtQ.css">
+  <script type="module" crossorigin src="/assets/main-BbnSy6IG.js"></script>
+  <link rel="stylesheet" crossorigin href="/assets/main-Bh5tqssv.css">
 </head>
 <body>
   <div id="app"></div>