docs: delete orphaned non-nav pages - #217

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Fetching and validating config file...
Fetching .mintignore file...
Fetching ASSISTANT.md file...
Successfully validated mint.json
Successfully fetched .mintignore
No Assistant.md file found
No docsConfig evaluation needed
DocsConfig evaluation complete
Fetched all file paths
Fetched 2 OpenApi file(s):
  - api-reference/solve/openapi.yaml
  - api-reference/sprinter/openapi.json
Fetched 0 AsyncApi file(s)
Skipped OpenAPI navigation generation
Skipped AsyncAPI navigation generation
Successfully updated API reference metadata.
No stale files found
Updating all paths...
Successfully updated deployment
LaTeX detected in documentation
Successfully saved config
No stale tracked assets found
Updating navigation...
Navigation updated
Skipped editor nav regeneration (no existing record)
Queued search indexing
Skipped search indexing (non-manual update).
Contextual starter questions are not enabled.
Successfully deleted stale OpenAPI document(s)
Successfully deleted stale AsyncAPI document(s)
Starting page revalidation...
Revalidating all pages...
Revalidating 71 paths
Page revalidation complete
Successfully deleted stale tracked asset(s)
Queued update of llms-full.txt
Skipping revalidation
Updated deployment cache