Step 16.1: global worklog dashboard + conservative suggestions
- Fix date timezone: worklog.Add uses local date (was UTC)
- Conservative suggestion estimator:
- burst detection (10min window), time spread analysis
- 5-30 min range, 60+ only with strong evidence
- confidence levels: low/medium/high with reason
- worklog/report.go: ReportFilter, ListReport, Summary, ExportCSV, ExportMarkdown
- Expanded WorklogDTO: date, details, approximate, billable, nodeTitle
- New bindings: CreateWorklogFull, ListWorklogReport, WorklogSummary, Export*
- New system section 'Журнал' in sidebar with badge (suggestion count)
- Global journal screen: filters (date range, includeChildren), table, summary
- Suggestions shown on Today dashboard + Journal screen + per-node worklog tab
- Suggestion cards: editable minutes, confidence display, apply/open buttons
- i18n: all new keys in ru + en