[Bug Fix] Fix /docs/dropdown_menu 404 (#428)

[djalmaaraujo]

Fixes #428 — /docs/dropdown_menu returned a 404.

Root cause

Two stacked problems:

1. Broken docs example. The "Non-navigational item" example added in [Feature] Allow DropdownMenuItem to render as a div via as: #427 referenced a DialogClose component that does not exist in the gem. VisualCodeExample evaluates the snippet at render time (instance_eval), so it raised NoMethodError: undefined method 'DialogClose' and the page failed to render.
2. Error masking. config.exceptions_app was a lambda that always rendered the not_found action, so the resulting 500 surfaced as a 404 page — hiding the real error and making the issue look like a missing route.

Changes

• docs/app/views/docs/dropdown_menu.rb — close the dialog with the documented pattern (Button wired to click->ruby-ui--dialog#dismiss, the same approach used in dialog_docs.rb) instead of the nonexistent DialogClose.
• docs/config/application.rb — point exceptions_app at the router. The /404 and /500 routes already exist, so the response status now matches the actual error and ErrorsController#internal_server_error becomes reachable. This un-masks future 500s.

Verification

• Live (docker): /docs/dropdown_menu → 200, renders clean. Exercised the example in-browser — dropdown opens, "Delete" item opens the Dialog, the Delete button dismisses it.
• bin/rails test → 70 runs, 0 failures. standardrb clean.

Note on search (⌘K)

Investigated the reported search issue too: production search works (verified in-browser — click opens the command dialog and focuses the input). The local breakage was a stale, gitignored asset build predating the command-dialog controller; rebuilding assets fixes it. No code change needed, so nothing for it here.

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Summary by cubic

Fixes the /docs/dropdown_menu 404 by correcting the docs example and routing exceptions through the Rails router so real 500s aren’t masked as 404s.

• Bug Fixes
  • Replaced nonexistent DialogClose in the “Non‑navigational item” example with a Button wired to click->ruby-ui--dialog#dismiss.
  • Set config.exceptions_app = routes so /404 and /500 handle errors and status codes reflect the actual failure.

^{Written for commit 6b79055. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 2 files

_{Re-trigger cubic}