Merge remote-tracking branch 'origin/master' into worktree/tui-session-controls

# Conflicts:
#	docs/config-catalog.md
#	docs/event-producer-consumer.md
#	docs/module-graph.md
#	packages/ui/acp/src/index.ts
#	packages/ui/tui/README.md
#	packages/ui/tui/src/index.ts
#	packages/ui/tui/tests/harness.ts
#	packages/ui/tui/tests/plugin-shape.spec.ts
#	packages/ui/tui/tests/snapshots/disposed-terminal.expected.txt
#	packages/ui/tui/tests/snapshots/errors-and-help.expected.txt
#	packages/ui/tui/tests/tui.spec.ts

packages/ui/tui/tests/harness.ts

@@ -2,6 +2,7 @@ import { Context } from 'cordis'
 import type { Terminal } from '@earendil-works/pi-tui'
 import AgentRegistry, { type Agent, type AgentOptions, type AgentStatus } from '@deepseek-ai/dsh-agent'
 import type { ContentBlock, LlmModelInfo, LlmProviderInfo } from '@deepseek-ai/dsh-llm'
+import CommandService from '@deepseek-ai/dsh-commands'
 import SessionStore, { SessionId, type Session } from '@deepseek-ai/dsh-session'
 import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
 import type { ToolDefinition } from '@deepseek-ai/dsh-tools'
@@ -57,6 +58,7 @@ export async function createTuiTestHarness<TerminalType extends Terminal, Exit e
   const ctx = new Context()
   await ctx.plugin(SessionStore)
   await ctx.plugin(AgentRegistry)
+  await ctx.plugin(CommandService)
   await ctx.plugin(UserInteractionService)
   const catalog = options.catalog ?? {
     providers: [{ id: 'deepseek', name: 'DeepSeek' }],