Merge branch 'codex/tool-json-schema-dsl' into codex/canonical-tool-output

# Conflicts:
#	.agents/notes/implemented/feature/2026-06-30-interception-seams.md
#	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/core-data-structures/tools.md
#	docs/event-producer-consumer.md
#	docs/persistence-catalog.md
#	examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
#	examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/stdout.expected.jsonl
#	packages/bash/tool-bash/src/index.ts
#	packages/core/agent-loop/src/tool-calls.ts
#	packages/core/agent-loop/tests/cancel.spec.ts
#	packages/core/agent-loop/tests/contract-regressions.spec.ts
#	packages/core/agent-loop/tests/tool-calls.spec.ts
#	packages/core/tools/README.md
#	packages/core/tools/src/index.ts
#	packages/core/tools/tests/code-mode.spec.ts
#	packages/core/tools/tests/tools.spec.ts
#	packages/fs/tool-fs-search/tests/integration.spec.ts
#	packages/fs/tool-fs-search/tests/tools.spec.ts
#	packages/fs/tool-fs/tests/integration.spec.ts
#	packages/mcp/mcp-client/src/tools.ts
#	packages/timeout/timeout-policy/tests/timeout-policy.spec.ts
#	packages/web/tool-web/tests/integration.spec.ts
#	packages/web/tool-web/tests/tool-web.spec.ts

packages/todo/tool-todo/tests/tool-todo.spec.ts

@@ -10,6 +10,8 @@ import { type Agent } from '@deepseek-ai/dsh-agent'
 
 import * as tool from '../src/index.ts'
 
+const testToolSignal = new AbortController().signal
+
 /**
  * Drives the REAL plugin body: mounts `dsh-tool-todo` on a real `ToolRegistry`
  * and invokes the registered `todo_write` tool through `ctx.tools.execute`,
@@ -36,6 +38,7 @@ let callCounter = 0
 function callTodo(ctx: Context, args: unknown, over: { agent?: Agent | undefined } = {}) {
   const agent = 'agent' in over ? over.agent : agentWithSession()
   return ctx.tools.execute({
+    signal: testToolSignal,
     callId: CallId(`call-${++callCounter}`),
     name: 'todo_write',
     arguments: args,