Reclassify eyelid as external soft tissue zone following prepuce pattern

- Changed is_a from organ part to external soft tissue zone (UBERON:0034929)
- Added has_part relationships for skin of eyelid and palpebral conjunctiva
- Follows pattern established by prepuce for multi-tissue surface structures
- Addresses feedback on PR #3641 about semantic classification

@dragon-ai-agent

Co-authored-by: dosumis <112839+dosumis@users.noreply.github.com>

Author: Copilot

.gitignore

@@ -260,3 +260,4 @@ src/ontology/subsets/*.tsv
 src/ontology/imports/*_import.owl
 !src/ontology/imports/orcidio_import.owl
 /site/*
+/tools/

src/ontology/uberon-edit.obo

@@ -28975,10 +28975,12 @@ xref: SCTID:265782007
 xref: UMLS:C0015426 {source="ncithesaurus:Eyelid"}
 xref: VHOG:0000016
 xref: Wikipedia:Eyelid
-is_a: UBERON:0000064 ! organ part
+is_a: UBERON:0034929 ! external soft tissue zone
 relationship: capable_of GO:0060082 ! eye blink reflex
 relationship: contributes_to_morphology_of UBERON:0000019 ! camera-type eye
 relationship: fma_set_term FMA:75178
+relationship: has_part UBERON:0001457 ! skin of eyelid
+relationship: has_part UBERON:0001812 ! palpebral conjunctiva
 relationship: part_of UBERON:0000019 {source="multiple"} ! camera-type eye
 relationship: protects UBERON:0010409 ! ocular surface region
 property_value: depiction "https://upload.wikimedia.org/wikipedia/commons/8/84/Eye_makeup.jpg" xsd:anyURI