docs: Document .continue/configs/ directory for local config profiles

[continue]

Summary

PR #11935 added support for .continue/configs/ as a third directory (alongside .continue/agents/ and .continue/assistants/) for loading local config profiles. YAML files placed in .continue/configs/ (workspace or global) are now discovered, watched, and loaded as local profiles.

What needs to be documented

1. Explain that .continue/configs/ is a valid directory for storing config profile YAML files
2. Document the difference between:
   • ~/.continue/config.yaml - main local config file
   • ~/.continue/configs/ - directory for additional config profiles
   • Workspace-level .continue/configs/ directory
3. Add examples of how to create and use config profiles in this directory
4. Update relevant documentation pages (e.g., docs/customize/deep-dives/configuration.mdx, docs/guides/understanding-configs.mdx)

Related PR

• PR: feat: add .continue/configs support #11935 - feat: add .continue/configs support
• Merged: March 27, 2026

Notes

The current documentation at docs/guides/ollama-guide.mdx incorrectly references ~/.continue/configs/config.yaml which appears to be a typo/error - the main config file should be at ~/.continue/config.yaml.