fix: show md rules and prompts in respective sections (#8178)

* fix: show md rules and prompts in respective sections

* Update core/config/markdown/loadMarkdownRules.ts

Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

* Revert "Update core/config/markdown/loadMarkdownRules.ts"

This reverts commit cf0fabaf71eaf7f8c9456eb737dcb08c365c04c0.

* Revert "fix: show md rules and prompts in respective sections"

This reverts commit b19726baf78d35e9cf4c2fb5c1549127af66f868.

* fix: skip invokable prompt files

also read .md files from prompt folders

* remove debug statements

* simplify if block

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Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>