Add measured-feature index for release v1.0.0-20261025

Gene/feature search index for the spatial-data-agent-db toolkit (schema sda-db-feature-index-3). Built from the var tables of all 12,163 released samples; existing catalog files are unchanged.

catalog/feature-index-provenance.json

@@ -0,0 +1,25 @@
+{
+  "schema": "sda-db-feature-index-provenance-1",
+  "file": "catalog/feature-index.sqlite.gz",
+  "file_sha256": "c2376d3743932d8d5b2a2c93134efd4b66aa324e653d97e1433a418db645d2a4",
+  "file_bytes": 41927554,
+  "index_schema": "sda-db-feature-index-3",
+  "release": "v1.0.0-20261025",
+  "release_commit": "999566bf516169ba8c9cf1ad9e5a2b722bb8a97a",
+  "catalog_sha256": "909c4ec50e71c636eadc7bf01a9479fef1b4fd480ac348dfea6b785e566c7bed",
+  "source": "var tables (feature_name, source_feature_id, feature_type) of every released spatial.h5ad; expression matrices not read",
+  "samples": 12163,
+  "panels": 1954,
+  "feature_rows": 35045457,
+  "keys": 4488042,
+  "searchable_keys": 1703058,
+  "targeted_max_features": 10000,
+  "checks": {
+    "files_size_checked_against_file_manifest": 12163,
+    "files_rehashed_against_catalog_sha256": 60,
+    "problems": 0
+  },
+  "semantics": "measured features (present in var), not detection; keys are case-insensitive names/IDs without Ensembl version suffixes or reference-genome prefixes; names kept as deposited",
+  "builder": "spatial-data-agent-db 0.3.0 tools/build_feature_index.py and tools/compact_feature_index.py",
+  "built": "2026-11-03"
+}

catalog/feature-index.sqlite.gz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c2376d3743932d8d5b2a2c93134efd4b66aa324e653d97e1433a418db645d2a4
+size 41927554