docs(gks-vignettes): add GA4GH GKS Starter Kit vignettes doc tree

.gitignore

@@ -132,6 +132,7 @@ venv.bak/
 # MkDocs build output
 docs/site/
 public/docs/mavedb/
+public/docs/gks-vignettes/
 
 # IDEs and editors
 .vscode/

docs-gks-vignettes/.gitignore

@@ -0,0 +1,2 @@
+.venv/
+site/

docs-gks-vignettes/docs/index.md

@@ -0,0 +1,14 @@
+# MaveDB × GA4GH GKS Vignettes
+
+Real-world walk-throughs of how **MaveDB** uses the GA4GH **Genomic Knowledge Standards** to solve core problems in sharing multiplexed assay of variant effect (MAVE) data.
+
+These are drafted for contribution to the [GA4GH GKS Starter Kit](https://github.com/ga4gh/gks-starter-kit); this site is an internal preview. Each vignette is a real implementation — the problem, the data, the tools, and what GKS unlocks — written to be forwardable to a teammate or to leadership.
+
+## The vignettes
+
+- [**Giving every MAVE variant a precise, computable identity with VRS**](vignettes/mavedb-mave-variants-vrs/vignette.md) — mapping every variant into VRS 2.0 as MaveDB's canonical representation. *(VRS · production)*
+- [**Annotating a variant once, across every score set that measured it**](vignettes/mavedb-vrs-cross-score-set-harmonization/vignette.md) — the VRS digest as a harmonization key. *(VRS · pilot)*
+- [**Carrying a measured variant across every molecular level with Cat-VRS**](vignettes/mavedb-protein-variant-cat-vrs/vignette.md) — a measured variant as a category over its equivalents. *(Cat-VRS · proposal)*
+- [**Sharing MAVE functional evidence as computable statements with VA-Spec**](vignettes/mavedb-functional-evidence-va-spec/vignette.md) — study results, functional-impact statements, and pathogenicity statements. *(VA-Spec · production)*
+
+These thread one connected story: the same variants flow from VRS identity, through harmonization and categorization, into VA-Spec evidence.