Update CLI chat session bridge (#697)

* feat: add CLI chat sessions with Python agent bridge

Introduce a new CLI chat mode that connects Web UI directly to Hermes
Agent's AIAgent via a Python bridge subprocess and Socket.IO, bypassing
the API Server /v1/responses path. Supports streaming, slash commands
(/new, /undo, /retry, /branch, /compress, /save, /title), interrupt,
and steer.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* feat: update CLI chat session bridge

* fix: extend agent bridge startup timeouts

* docs: update bridge chat session design

* feat: align bridge compression and provider registry

* chore: bump version to 0.5.20

---------

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

packages/client/src/i18n/locales/en.ts

@@ -131,6 +131,7 @@ export default {
     contextEditSuccess: 'Context length updated',
     contextEditFailed: 'Update failed',
     emptyState: 'Start a conversation with Hermes Agent',
+    cliEmptyState: 'Start a CLI chat session',
     inputPlaceholder: 'Type a message... (Enter to send, Shift+Enter for new line)',
     attachFiles: 'Attach files',
     autoPlaySpeech: 'Auto-play voice',
@@ -159,6 +160,7 @@ export default {
     searchEnterHint: 'Enter to open · Esc to close',
     searchFailed: 'Failed to search sessions',
     newChat: 'New Chat',
+    newCliChat: 'New CLI',
     deleteSession: 'Delete this session?',
     sessionDeleted: 'Session deleted',
     toggleBatchMode: 'Batch selection',