Handle settings logs agent failures

openspec/specs/meeting-session/spec.md

@@ -270,7 +270,7 @@ The tray icon menu SHALL show every configured launch profile when recording can
 
 When the user selects `Edit rules and identities`, Meeting Assistant SHALL open a basic MewUI chat window for editing the configured workflow rules file and speaker identities.
 
-The chat window SHALL be titled `Edit rules and identities`, SHALL display user and assistant messages as visually distinct cards, SHALL display basic markdown emphasis, inline code, fenced code blocks, pipe tables rendered as grid views, and line breaks in agent responses, SHALL display a plain `Thinking...` line while the agent is working, SHALL provide a multiline text input at the bottom with placeholder text for asking to make a rule or list identities, SHALL send on Enter, SHALL insert a newline on Shift+Enter, and SHALL provide an explicit Send button.
+The chat window SHALL be titled `Edit rules and identities`, SHALL display user and assistant messages as visually distinct cards, SHALL display basic markdown emphasis, inline code, fenced code blocks, pipe tables rendered as grid views, and line breaks in agent responses, SHALL display a plain `Thinking...` line while the agent is working, MAY replace that line with `Reconnecting...` while retrying a transient agent request, SHALL provide a multiline text input at the bottom with placeholder text for asking to make a rule or list identities, SHALL send on Enter, SHALL insert a newline on Shift+Enter, and SHALL provide an explicit Send button.
 
 When a new chat message or thinking state is appended, the chat window SHALL scroll to the bottom of the newly rendered content if the conversation was already near the bottom or did not need scrolling before the append.
 
@@ -350,6 +350,12 @@ Meeting Assistant SHALL provide a diagnostic endpoint that opens the workflow ru
 - **AND** the first model request for that turn is marked as user-initiated
 - **AND** the final assistant response replaces the thinking line
 
+#### Scenario: Rules editor displays agent request failures
+- **GIVEN** the rules editor chat window is open
+- **WHEN** the agent request fails or times out without caller cancellation
+- **THEN** the user message remains in the conversation
+- **AND** the thinking line is replaced by a visible assistant error message
+
 #### Scenario: Chat auto-scrolls after appended content
 - **GIVEN** the rules editor chat window content fits without scrolling or is already near the bottom
 - **WHEN** a new user or assistant message is appended