docs(task-206): record PR reference in completed task summary

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: stephanj

backlog/completed/task-206 - Add-anonymous-LLM-provider-model-usage-analytics.md

@@ -168,4 +168,8 @@ The exact payload is six fields: `client_id`, `session_id` (10-digit string per
 
 ### Notes
 - TASK-207 (GenieBuilder backend + admin UI to surface `prompt_executed` and add an `app_name` filter) is a hard dependency for end-to-end visibility but does not block this PR.
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+---
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+**PR:** https://github.com/devoxx/DevoxxGenieIDEAPlugin/pull/1005
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