Ryan Malloy 66ec2ba9e7 Add visualization tools: tide charts and conditions dashboards ...

New visualize_tides and visualize_conditions MCP tools that generate
PNG (inline via MCP ImageContent) or interactive HTML (Plotly) charts.
Optional dependency group [viz] keeps the base install lightweight.

- charts/ package: rendering logic separated from MCP tool wiring
- Shared marine color palette (ocean blue, teal, slate, sand, coral)
- 14 new tests (parsing, PNG/HTML rendering, tool registration)
- Example chart images in README with realistic synthetic tidal data

2026-02-22 16:51:00 -07:00

434 KiB

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