Add Streamlit meeting assistant MVP

CHANGELOG.md

@@ -2,6 +2,17 @@
 
 ## [Unreleased]
 
+### Added
+
+- First Streamlit MVP for audio upload, Meeting Context entry, participant
+  management, processing progress and protocol editing.
+- Application service and Meeting Lab adapter with environment-based runtime
+  configuration.
+- Per-meeting upload and edited-protocol persistence.
+- Unit tests for context construction, configuration translation, progress,
+  failure and result handling.
+- ADR 0011 for the Meeting Lab MVP backend architecture.
+
 ### Changed
 
 - Reconciled the documented MVP with the validated Meeting Lab backend.
@@ -10,10 +21,6 @@
   boundaries.
 - Set the user-facing Meeting Assistant GUI as the next milestone.
 
-### Added
-
-- ADR 0011 for the Meeting Lab MVP backend architecture.
-
 ## [0.1.0] - 2026-07-14
 
 ### Added