Merge branch 'codex/canonical-tool-output' into codex/code-mode-typed-results

# Conflicts:
#	docs/config-catalog.md
#	docs/cookbook/adding-a-tool.i18n.yaml
#	docs/cookbook/adding-a-tool.md
#	docs/cookbook/adding-a-tool.zh.md
#	docs/cordis-catalog/events.md
#	docs/cordis-catalog/services.md
#	docs/event-producer-consumer.md
#	packages/core/tools/tests/code-mode.spec.ts

packages/spill/spill-policy/tests/spill-policy.spec.ts

@@ -22,6 +22,8 @@ import type { SaveTextSpill, SpillRef } from '@deepseek-ai/dsh-spill'
 import * as SpillPolicy from '@deepseek-ai/dsh-spill-policy'
 import { WorkerCodeRuntime } from '@deepseek-ai/dsh-code-runtime-worker'
 
+const testToolSignal = new AbortController().signal
+
 /** A stub spill backend recording its saves; `fail` exercises the best-effort fallback. */
 class StubStore extends SpillStore {
   saves: SaveTextSpill[] = []
@@ -52,7 +54,7 @@ function textTool(name: string, text: string) {
 function exec(name: string, session = 's1'): ToolExecution {
   // Only agent.session.header.id is read by the policy; a structural stub suffices.
   const agent = { session: { header: { id: SessionId(session) } } }
-  return { callId: CallId(`call-${name}`), name, arguments: {}, agent } as unknown as ToolExecution
+  return { callId: CallId(`call-${name}`), name, arguments: {}, agent, signal: testToolSignal } as unknown as ToolExecution
 }
 
 /**
@@ -192,6 +194,7 @@ describe('outer Code Mode failure capture', () => {
     }
 
     const result = await ctx.tools.execute({
+      signal: testToolSignal,
       callId: CallId('code-output-limit'),
       name: 'run_code',
       arguments: {
@@ -261,7 +264,7 @@ describe('best-effort fallback', () => {
     const { ctx, spill } = await setup({ maxInlineBytes: 10 })
     const warn = vi.spyOn(ctx.logger, 'warn').mockImplementation(() => {})
     ctx.tools.register(textTool('big', 'x'.repeat(1000)))
-    const result = await ctx.tools.execute({ callId: CallId('c'), name: 'big', arguments: {} })
+    const result = await ctx.tools.execute({ signal: testToolSignal, callId: CallId('c'), name: 'big', arguments: {} })
     expect(textOf(result.content)).toBe('x'.repeat(1000))
     expect(spill?.saves).toHaveLength(0)
     expect(warn).toHaveBeenCalled()