Use when the user asks for a chart, KPI, trend, report, or multi-widget dashboard. Triggers on phrases like 图表/趋势图/可视化/报表/仪表盘/大屏/多图组合 and chart/visualization/dashboard/KPI/multi-widget/ECharts/grid layout. Covers the inline `chart` fenced code block (default single-chart path), `chart:<artifactId>` for SQL-derived charts, and dashboard schema v1 plus incremental `ui_patch` edits for persistent multi-widget layouts.
Use when an LLM agent edits workbench tabs (query_editor, artifact_preview, er_inspector, er_designer, future report_designer) and encounters version conflicts or must guard against concurrent writes. Triggers on 版本冲突 / 409 / version_conflict / anchor_not_found / anchor_ambiguous / baseVersion / expectedVersion / optimistic locking / multi-edit batch / concurrent edit / 乐观锁 / 并发编辑 / 重试. Defines the optimistic-locking contract for workspace-wide, persisted tabs that any session (including parallel agents) may have mutated since your last read, plus mandatory recovery steps on conflict.
Use when invoking the four UI tools — `datatalk_ui_find` / `datatalk_ui_read` / `datatalk_ui_patch` / `datatalk_ui_exec` — to discover, inspect, edit, or execute actions on stage tabs (workspace / query_editor / er_inspector / er_designer). Triggers on `ui_find` / `ui_read` / `ui_patch` / `ui_exec` / `apply_text_edits` / `set_context` / `操作 UI` / `编辑 tab` / `查找 tab` / `读取 tab 状态` / `修改 SQL 编辑器`. Defines parameter shapes, required fields per action, top-level `object`/`target`/`mode`/`action`/`params` semantics, and the post-edit re-read verification rule.
Premium industrial dashboards from v3 JSON. Use for dashboards, KPI boards, monitoring screens, ops cockpits, big-screen displays, or any multi-metric data visualization. The backend Bezel compiler turns JSON into HTML deterministically — no AI-generated HTML.
企业级汇报文档生成（业务月报、问题复盘、季度总结、事件postmortem）。 与 bezel skill 的边界：bezel 做实时大屏 dashboard（深色科技风、单源 widget、轮询刷新）； ledger 做冻结快照报告（白底衬线印刷品风、跨源叙事、PDF 邮件转发与打印归档）。 二者**不可互相替代**：用户说"做大屏"用 bezel，用户说"做汇报/周报/月报/复盘"用 ledger。
Use when the user asks to query, mutate, or change schema against a SQL connection. SELECT/INSERT/UPDATE/CREATE/ALTER...ADD run via `datatalk_execute_sql`; DELETE requires `confirmationId` confirm; destructive DDL (DROP/TRUNCATE/ALTER...DROP/GRANT/REVOKE) returns `redirect_to_editor`. Triggers on 查询/统计/分析/读表/取数/插入/更新/删除/建表/改表/count/select/insert/update/delete/create/alter/drop/aggregate/group by/trend/top N/explore schema/describe table. Covers execute_sql contract, DELETE confirm, DDL redirect, read_schema discovery/describe, and table-not-found probe.
Use when the user mentions a specific database product, asks about supported data source types, picks a connection kind, or asks why a feature (ER / diagnostics / mutation) is unavailable on a given dialect. Triggers on MySQL / PostgreSQL / Oracle / SQL Server / SQLite / DuckDB / ClickHouse / TiDB / MariaDB / OceanBase / StarRocks / Apache Doris / Trino / Presto / Dameng / Apache Hive / GaussDB / 方言 / dialect / 数据库类型 / 数据源类型 / 连接类型. Covers per-dialect connection kind, default port, JDBC driver, schema visibility, SQL splitter family, risk-tier highlights, and ER / diagnostics support status.
Routes uploaded files to appropriate actions based on pre-analysis summary and user intent. Activated when user message contains a file_upload part.