[Task] Remove or gate LLM context documentation before merge

[Rexus]

Task

Ensure that LLM-specific context documentation is not included in the final release or main branch.

This task ensures that temporary development aids do not leak into stable releases.

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Done when

• LLM context documentation is removed or excluded before release
• A decision is made whether to:
  - remove it completely, or
  - move it to a non-distributed/internal location
• CI or review process ensures it is not present in release branches