tweak: add canvas generation paths

[djbarnwal]

Adds canvas generation option to navigation files

https://www.notion.so/rilldata/E2E-Rill-Developer-AI-UX-Feedback-2c0ba33c8f578007b425d5dac810f21e?source=copy_link#2c4ba33c8f578081a648d2eff32a8e34

Checklist:

• Covered by tests
• Ran it and it works as intended
• Reviewed the diff before requesting a review
• Checked for unhandled edge cases
• Linked the issues it closes
• Checked if the docs need to be updated. If so, create a separate Linear DOCS issue
• Intend to cherry-pick into the release branch
• I'm proud of this work!

[ericokuma]

UXQA:

1. I would use a trash icon instead the 'x' icon for 'delete'

Otherwise, it looks good!

[ericpgreen2]

Approving with a few minor observations:

1. Inconsistent "with AI" label treatment: In GoToDashboardButton.svelte, the AI indicator is appended as plain text (Generate Canvas Dashboard with AI), while in ModelMenuItems.svelte, SourceMenuItems.svelte, and MetricsViewMenuItems.svelte it includes a wand icon. Consider using the same visual treatment consistently.

2. Potential non-functional menu item: In MetricsViewMenuItems.svelte, when hasMenuItems is false, the "View DAG graph" item is still rendered in the else block. The viewGraph() function has a guard that returns early if resource is undefined, so clicking it would do nothing. Consider hiding or disabling this item when there's no resource.

3. "DAG graph" is redundant: "DAG" expands to "Directed Acyclic Graph", so "DAG graph" means "Directed Acyclic Graph graph". Consider using just "View DAG" or keeping the original "View dependency graph".

None of these are blockers.

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Developed in collaboration with Claude Code