Synchronize recording lifecycle regression tests

openspec/changes/archive/2026-06-03-add-transcript-write-workflow-rules/specs/meeting-session/spec.md

@@ -27,6 +27,12 @@ A `transcript_line` trigger MAY filter by speaker name.
 - **THEN** the written transcript line contains `[redacted]`
 - **AND** the written transcript line does not contain `*****`
 
+#### Scenario: Live transcript verification does not obstruct durable writes
+- **GIVEN** a live transcript line is being durably appended and then rewritten by a `transcript_line` rule
+- **WHEN** automated behavior verification observes the live transcript file
+- **THEN** its observer permits the ongoing append and rewrite rather than denying the writer access
+- **AND** verification still requires the completed transcript line to contain the transformed text and no original masked profanity
+
 ### Requirement: Meeting automation rules support conditions and steps
 Meeting Assistant SHALL support rule conditions using an expression engine.