MCP: configure dashboard filters, defaults, and card parameter mappings

What problem will this feature request solve?

The connected Metabase MCP can create questions and dashboards, but its exposed dashboard tools cannot add filter widgets or connect them to cards. Hard-coding a period in each question is not equivalent: users need to change the date range from the dashboard.

Describe the solution you'd like.

Expose MCP operations to create/update dashboard date-range, category/text, and time-grouping parameters; set overridable defaults such as the previous 3 days; map parameters to notebook fields and native SQL template tags; configure visibility across tabs; and read back the mappings for verification.

For example, one date picker should filter cards from multiple databases, while a time-grouping selector switches between day and hour. Company, workflow, tags, IDs, and text-contains filters should be configurable too.

How does this feature request impact you?

We can create a dashboard through MCP but must switch to browser automation to finish its basic interactive filtering.

Additional information

Related layout request: #82648. This concerns the capabilities exposed by MCP, not the existing web UI.