refactor: move gap-finder to Evidence Insight and drop PubMed.ai references

Relocates medical-research-gap-finder from Protocol Design to Evidence Insight
and removes lingering PubMed.ai mentions from the skill and its retrieval guide.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: GiaoLee

awesome-med-research-skills/Evidence Insight/medical-research-gap-finder/SKILL.md

@@ -78,7 +78,6 @@ Required priority:
 2. **Google Scholar** for broader recall and citation chaining
 3. **Web of Science** when available for citation-network and indexed-coverage checking
 4. **Preprint sources** such as arXiv only as clearly labeled non-peer-reviewed evidence
-5. **PubMed.ai** may assist retrieval/synthesis but must not replace direct record verification
 
 Do not name any formal gap until retrieval has been completed.
 

awesome-med-research-skills/Evidence Insight/medical-research-gap-finder/references/literature-retrieval-and-citation.md

@@ -29,10 +29,6 @@ Use when available to check field coverage, identify highly connected records, a
 Use arXiv or other preprint platforms only as explicitly labeled, non-peer-reviewed evidence.
 Preprints may inform trend detection or emerging methods, but must not be treated as equivalent to validated peer-reviewed support.
 
-### 5. PubMed.ai
-May be used as an AI-assisted retrieval or synthesis helper.
-It must not replace direct verification from PubMed, publisher pages, Crossref/DOI metadata, or other trustworthy records.
-
 ---
 
 ## Minimum Retrieval Tasks
@@ -91,7 +87,6 @@ Do not:
 - invent PMIDs or DOIs
 - guess authors, journals, years, or titles from memory
 - cite a paper formally when only partial metadata is visible
-- treat PubMed.ai summaries as direct citation verification
 - treat preprints as peer-reviewed without explicit labeling
 
 ---