Merge remote-tracking branch 'origin/master' into codex/project-instruction-files

# Conflicts:
#	docs/event-producer-consumer.md
#	docs/rfc/README.md
#	packages/core/agent-core/src/index.ts
#	packages/ui/acp-agent/src/index.ts

packages/ui/acp-agent/tests/built-bin.e2e.ts

@@ -99,7 +99,7 @@ async function makeConsumer(): Promise<string> {
     '  name: \'@deepseek-ai/dsh-acp-agent\'',
     '  config:',
     '    model: deepseek-v4-flash',
-    '    systemPrompt: \'test agent\'',
+    '    persona: \'test agent\'',
     '',
   ].join('\n'))
   return dir