Add versioned glossary YAML import and export

README.md

@@ -143,6 +143,27 @@ The database defaults to `data/database/glossary.sqlite3`. It is created and
 bootstrapped automatically and can be moved with `MKA_GLOSSARY_DATABASE`.
 Glossary integration does not rewrite raw or diarized transcript artifacts.
 
+Use **Export glossary** to download the complete SQLite-backed glossary as
+UTF-8 YAML, and **Import glossary** to replace it from a previously exported
+file. Imports are fully validated before a single SQLite transaction replaces
+the current glossary, so malformed or conflicting files leave existing data
+unchanged. Schema version 1 is:
+
+```yaml
+version: 1
+glossary:
+  - id: 1
+    canonical_term: Secugrid HS
+    aliases:
+      - Sikirgut
+    category: product
+    description: Canonical product spelling
+    active: true
+```
+
+`id` is the stable SQLite glossary-entry identifier. Categories are `product`,
+`material`, `organization`, `technical_term`, `acronym`, or `other`.
+
 ## Input configuration import and export
 
 Use **Export inputs** to save the current Meeting Assistant run-input form as a