From 01da49a3aba3ee285784262af847988f70935ad9 Mon Sep 17 00:00:00 2001
From: Tianyi Cui <53024+tianyicui@users.noreply.github.com>
Date: Tue, 14 Jul 2026 03:07:41 +0800
Subject: [PATCH 1/5] refactor: prune code runtime surface

---
 docs/cordis-catalog/services.md               |  2 +-
 docs/core-data-structures/code-runtime.md     | 17 ++-----
 .../feature/2026-06-15-code-mode.md           |  5 +-
 .../code-runtime-worker/README.md             |  4 +-
 .../code-runtime-worker/package.json          |  1 -
 .../code-runtime-worker/src/bootstrap.ts      | 40 +++++++--------
 .../code-runtime-worker/src/index.ts          | 44 ++++++----------
 .../code-runtime-worker/src/protocol.ts       |  8 ++-
 .../tests/bootstrap.spec.ts                   | 50 +++++++++----------
 .../tests/built-lib.e2e.ts                    |  4 +-
 .../code-runtime-worker/tests/runtime.spec.ts | 36 ++++++-------
 packages/code-runtime/code-runtime/README.md  |  2 +-
 .../code-runtime/code-runtime/src/index.ts    |  1 -
 .../code-runtime/code-runtime/src/types.ts    | 18 +------
 .../code-runtime/tests/service.spec.ts        |  2 +-
 .../cordis/tool-cordis/src/api-catalog.ts     |  6 +--
 packages/core/tools/src/code-mode.ts          | 11 ++--
 packages/core/tools/tests/code-mode.spec.ts   | 11 ++--
 scripts/type-equiv.manifest.json              |  1 -
 19 files changed, 100 insertions(+), 163 deletions(-)

diff --git a/docs/cordis-catalog/services.md b/docs/cordis-catalog/services.md
index 28d1904ecf..e95ad6af70 100644
--- a/docs/cordis-catalog/services.md
+++ b/docs/cordis-catalog/services.md
@@ -98,7 +98,7 @@ abstract run(request: CodeRunRequest): Promise<CodeRunResult>
 
 Types: [CodeRunRequest](../core-data-structures/code-runtime.md) · [CodeRunResult](../core-data-structures/code-runtime.md)
 
-Source: [`packages/code-runtime/code-runtime/src/index.ts:59`](../../packages/code-runtime/code-runtime/src/index.ts)
+Source: [`packages/code-runtime/code-runtime/src/index.ts:58`](../../packages/code-runtime/code-runtime/src/index.ts)
 
 ## `ctx.compact` — `CompactService` (abstract seam)
 
diff --git a/docs/core-data-structures/code-runtime.md b/docs/core-data-structures/code-runtime.md
index cb1661e02f..9237a3cce9 100644
--- a/docs/core-data-structures/code-runtime.md
+++ b/docs/core-data-structures/code-runtime.md
@@ -39,8 +39,8 @@ interface CodeRunResult {
    * or value-less run leaves this absent.
    */
   value?: unknown
-  /** Everything the program emitted, in order (capped by the implementation). */
-  logs: CodeLogEntry[]
+  /** Text the program emitted, in order (capped by the implementation). */
+  logs: string[]
   /** Present iff the run failed; see {@link CodeRunFailure} for the taxonomy. */
   error?: CodeRunFailure
 }
@@ -65,18 +65,7 @@ type CodeBindingFunction = (args: unknown) => Promise<unknown>
 
 ## Captured output and the failure taxonomy
 
-Logs arrive in emission order, attributed to their channel (the runtime's `console` shim, or stray writes to the underlying streams):
-
-```ts type-equiv
-interface CodeLogEntry {
-  /** Which channel produced the text. */
-  source: 'console' | 'stdout' | 'stderr'
-  /** The console method used; present only when `source` is `'console'`. */
-  level?: 'log' | 'info' | 'warn' | 'error' | 'debug'
-  /** The captured text (possibly truncated by the implementation's caps, marked in-band). */
-  text: string
-}
-```
+Logs are plain strings in emission order. The runtime captures the program's console and stream output, but channel and console-method metadata are not part of the seam because consumers render only the text. Implementations cap the aggregate output and mark truncation in-band.
 
 Failure kinds are **orthogonal outcomes reported independently** (per [defensive-patterns](../defensive-patterns.md)): a budget expiry is not an exception, an abort is not a timeout, and a substrate death (e.g. OOM) is neither:
 
diff --git a/docs/rfc/implemented/feature/2026-06-15-code-mode.md b/docs/rfc/implemented/feature/2026-06-15-code-mode.md
index 60acfa7c88..32d60aafcf 100644
--- a/docs/rfc/implemented/feature/2026-06-15-code-mode.md
+++ b/docs/rfc/implemented/feature/2026-06-15-code-mode.md
@@ -40,7 +40,7 @@ Under `'code'` and `'both'` the registry owns `run_code` as a reserved presentat
 
 1. **Builds the bindings**: the bridge owns a **run-scoped `AbortController`** whose signal follows `exec.signal` (an outer cancel propagates in) and which the bridge itself fires the moment the run settles for any reason — completion, program exception, `computeMs`/`maxWallMs` expiry, worker exit. For every visible capability tool, the binding is an async function that (a) checks the run signal before and after, (b) **JSON-normalizes the argument** — a `JSON.parse(JSON.stringify(args))` round-trip, rejecting that one call with a descriptive `Error` when the value does not survive (`BigInt`, circular structures) — because the seam's structured-clone boundary is wider than JSON while the session log accepts only JSON, (c) awaits its turn on the **per-run serialization queue** (below), (d) calls `this.execute({ callId, name, arguments, agent: exec.agent, parent: exec.token, signal: runSignal })` with a deterministic sub-id `` CallId(`${exec.callId}:code:${n}`) ``, (e) appends a `tool/code-dispatch` session event, and (f) maps the result: success → the text-block contents joined as a `string` (non-text blocks become placeholders), `isError` → **the binding rejects** with an `Error` carrying the result text. The child's readonly `parent` is only the outer execution's frozen, property-free token, so commit-style observers can correlate outcomes without receiving a mutation path into the live `run_code` wrapper. Every sub-call still traverses the full pipeline under its own immutable identity and registry-assigned token. The run signal, rather than the bare outer one, lets budget expiry abort an in-flight sub-tool instead of orphaning it. Rejection gives programs ordinary `try/catch` and `Promise.all` failure semantics rather than a bespoke result envelope.
 2. **Runs the program**: `ctx.codeRuntime.run({ program: args.code, bindings: [{ global: 'tools', functions }], signal: runController.signal })`. The runtime receives the run-scoped signal, not only the caller's outer signal, so any way the outer run settles also aborts work inside the runtime.
-3. **Surfaces the outcome — after reaching quiescence.** When `ctx.codeRuntime.run()` settles, whether by fulfillment or rejection, the bridge fires the run-scoped abort (cancelling any in-flight sub-dispatch and abandoning queued-unstarted ones), then **awaits the dispatch queue's drain before returning or propagating**, per the dispose-to-quiescence rule in [defensive patterns](../../../defensive-patterns.md): an aborted in-flight sub-call still settles and logs its `isError` `tool/code-dispatch` event *inside* the open turn, and nothing can append after `run_code` settles. A successful result then returns one text block — the captured console/stdout output followed by the rendered return value (if any) — plus a `meta` payload (capped logs, dispatch count) for presentation. A fulfilled run with `result.error` throws a `CodeRunFailedError extends HarnessError` (`code: 'CODE_RUN_FAILED'`, message = the error kind and text plus captured logs so the model can self-correct); a backend rejection propagates through the same registry error boundary. Both become structured `isError` tool results.
+3. **Surfaces the outcome — after reaching quiescence.** When `ctx.codeRuntime.run()` settles, whether by fulfillment or rejection, the bridge fires the run-scoped abort (cancelling any in-flight sub-dispatch and abandoning queued-unstarted ones), then **awaits the dispatch queue's drain before returning or propagating**, per the dispose-to-quiescence rule in [defensive patterns](../../../defensive-patterns.md): an aborted in-flight sub-call still settles and logs its `isError` `tool/code-dispatch` event *inside* the open turn, and nothing can append after `run_code` settles. A successful result then returns one text block — the captured console/stdout output followed by the rendered return value (if any) — plus the capped log strings as presentation metadata. A fulfilled run with `result.error` throws a `CodeRunFailedError extends HarnessError` (`code: 'CODE_RUN_FAILED'`, message = the error kind and text plus captured logs so the model can self-correct); a backend rejection propagates through the same registry error boundary. Both become structured `isError` tool results.
 
 **Sub-call `additionalContext` is suppressed, deliberately.** A `tools/post-execute` hook may attach `additionalContext` to a call; for loop-dispatched calls the loop buffers those and appends each as a `context/message` only after the step's `tool/result`s, preserving call/result adjacency. A sub-dispatch result's `additionalContext` has no such safe outlet from inside a running `run_code`: injecting immediately would land a `context/message` between the parent's `tool/call` and its `tool/result` (breaking the adjacency the buffering exists to protect), and `PostToolDecision.additionalContext` is singular where a program may produce many. The MVP therefore drops sub-call `additionalContext`, pinned by a test and stated in the hooks bridge's docs; the follow-up (a plural context channel or loop-level sub-dispatch buffering) is deferred until a real hook needs it through Code Mode.
 
@@ -58,8 +58,7 @@ Each sub-dispatch appends one session event, declared by `dsh-tools` via `Sessio
 
 - `CodeRunRequest = { program: string; bindings: CodeBindingNamespace[]; signal?: AbortSignal }`
 - `CodeBindingNamespace = { global: string; functions: Record<string, (args: unknown) => Promise<unknown>> }` — the runtime exposes each namespace as a global object of async functions inside the program; binding arguments and resolutions must be structured-cloneable (a runtime may cross a serialization boundary; ours does).
-- `CodeRunResult = { value?: unknown; logs: CodeLogEntry[]; error?: CodeRunFailure }` — program execution outcomes, including exception, timeout, abort, and worker exit, resolve as the `error` field. `run()` may reject only for caller/seam misuse (for example a duplicate binding namespace); consumers still contain a non-conforming backend rejection at their own error boundary.
-- `CodeLogEntry = { source: 'console' | 'stdout' | 'stderr'; level?: 'log' | 'info' | 'warn' | 'error' | 'debug'; text: string }`
+- `CodeRunResult = { value?: unknown; logs: string[]; error?: CodeRunFailure }` — program execution outcomes, including exception, timeout, abort, and worker exit, resolve as the `error` field. `run()` may reject only for caller/seam misuse (for example a duplicate binding namespace); consumers still contain a non-conforming backend rejection at their own error boundary.
 - `CodeRunFailure = { kind: 'exception' | 'timeout' | 'abort' | 'worker-exit'; message: string }` — orthogonal outcomes reported independently per [defensive patterns](../../../defensive-patterns.md); a timed-out run is not an exception, an abort is not a timeout.
 - Two readonly backend descriptors, informational not gating: `language` (what the program must be written in — `'typescript'` for the shipped backend; a Python backend would say so, and pair with its own SDK generator on the presentation side) and `isolation` (`'worker-thread'` for the shipped backend; `'process'`, `'container'`, … for future ones). `dsh-tools` requires `language === 'typescript'` in the MVP — its codegen emits TS — and fails the assembly loudly otherwise, the same misconfiguration idiom as `toolOrder` violations (as when `mode` is non-native with no `ctx.codeRuntime` loaded at all).
 
diff --git a/packages/code-runtime/code-runtime-worker/README.md b/packages/code-runtime/code-runtime-worker/README.md
index 8138f01539..705174d0e5 100644
--- a/packages/code-runtime/code-runtime-worker/README.md
+++ b/packages/code-runtime/code-runtime-worker/README.md
@@ -23,10 +23,12 @@ Every field is validated (positive numbers) and defaulted; there are no other tu
 - **Type-strip host-side, in execution context** — the program is wrapped in an async-function shell, stripped with `node:module`'s `stripTypeScriptTypes` (erasable syntax only — `enum`/namespaces are rejected as a program `exception` and no worker spawns), and sliced back out byte-positioned; it then executes as the body of an `AsyncFunction`, so top-level `await`/`return` work.
 - **The port assumes a hostile peer** — model code can reach `parentPort` and forge traffic, so every inbound message is shape-validated and REBUILT before anything reads it (`null`, primitives, junk types, and malformed payloads drop without a throw; forged extra fields never ride along), the host answers each call id at most once, resolves binding names as OWN properties only (a forged `constructor` cannot walk a prototype chain), drops post-settlement replies, and converts a non-cloneable binding resolution into an error reply. Forged `log`/`done` messages cannot bypass the caps: one host-side ledger bounds everything that lands in `logs`, and the completion value is re-capped host-side. Worker-side namespaces are null-prototype with `defineProperty`, so `__proto__`-shaped binding names are ordinary keys.
 - **Two independent budgets, because the peer is hostile** — `computeMs` meters the worker's MEASURED busy time (`worker.performance.eventLoopUtilization()` polling): a hot loop cannot hide behind a pending decoy dispatch, and a program awaiting a slow tool accrues nothing. `maxWallMs` backstops what busy time cannot see (awaiting a promise nobody resolves). Both funnel into `worker.terminate()`, which ends hot synchronous loops too; heap overflow surfaces as the worker's OOM exit (`kind: 'worker-exit'`).
-- **Logs stream eagerly** — console/stdout/stderr entries cross the port as they happen, so a timed-out or killed program still shows what it printed. ONE shared `maxLogBytes` ledger bounds everything: streamed entries, forged port traffic, and pipe bytes that bypass the patched streams (appended after), with the overflow marked in-band once.
+- **Logs stream eagerly** — console/stdout/stderr text crosses the port in emission order, so a timed-out or killed program still shows what it printed. ONE shared `maxLogBytes` ledger bounds everything: streamed text, forged port traffic, and pipe bytes that bypass the patched streams (appended after), with the overflow marked in-band once.
 - **Empty environment** — the worker gets `env: {}` and `execArgv: []`: no ambient credentials (stronger than the scrubbed-env rule for spawned commands) and no inherited loader flags.
 - **Dispose to quiescence** — teardown fails in-flight runs as `abort` and AWAITS each worker's exit before resolving.
 
 ## The worker entry, unbuilt and built
 
 `worker.ts` is deliberately erasable-only TypeScript with type-only cross-package imports: unbuilt (vitest/tsx), the host spawns `src/worker.ts` directly and Node's native type stripping loads it; built, the entry ships as the sibling CommonJS bundle `lib/worker.cjs` (its own tsdown entry). The CommonJS format is required because pkg's VFS Worker hook compiles filesystem-string entries as CommonJS. The host converts either entry URL to a filesystem string before constructing `Worker`, which works through both ordinary Node resolution and that pkg hook. The built path is pinned by `tests/built-lib.e2e.ts`, the real-load-path guard from [docs/testing.md](../../../docs/testing.md).
+
+The SDK surface is the default/named `WorkerCodeRuntime` class plus `Config`. The operational `./worker` subpath exists only as the packaged spawn entry; the wire protocol and bootstrap helpers are source-private implementation details.
diff --git a/packages/code-runtime/code-runtime-worker/package.json b/packages/code-runtime/code-runtime-worker/package.json
index 91075243d2..3c4ee1d931 100644
--- a/packages/code-runtime/code-runtime-worker/package.json
+++ b/packages/code-runtime/code-runtime-worker/package.json
@@ -15,7 +15,6 @@
       "types": "./lib/types/worker.d.ts",
       "default": "./lib/worker.cjs"
     },
-    "./src/*": "./src/*",
     "./package.json": "./package.json"
   },
   "files": [
diff --git a/packages/code-runtime/code-runtime-worker/src/bootstrap.ts b/packages/code-runtime/code-runtime-worker/src/bootstrap.ts
index f2e0d343f3..a152b6b278 100644
--- a/packages/code-runtime/code-runtime-worker/src/bootstrap.ts
+++ b/packages/code-runtime/code-runtime-worker/src/bootstrap.ts
@@ -12,7 +12,6 @@
 
 import { inspect } from 'node:util'
 import { serialize } from 'node:v8'
-import type { CodeLogEntry } from '@deepseek-ai/dsh-code-runtime'
 import { logTruncationMarker } from './protocol.ts'
 import type { DoneMessage, ReplyMessage, WorkerBootData, WorkerToHost } from './protocol.ts'
 
@@ -33,12 +32,12 @@ export interface PatchableStream {
 }
 
 /**
- * Ordered log capture under one shared byte budget, delivered to a sink as
- * each entry lands (the real sink streams entries over the port eagerly, so
+ * Ordered text capture under one shared byte budget, delivered to a sink as
+ * each item lands (the real sink streams text over the port eagerly, so
  * captured output survives a mid-run termination). Once the budget is
- * exhausted it emits exactly one in-band marker entry (on the `stderr`
- * diagnostics channel) and silently drops everything after — the cap is a
- * blast-radius bound, so "how much was lost" intentionally stays unmeasured.
+ * exhausted it emits exactly one in-band marker and silently drops everything
+ * after. The cap is a blast-radius bound, so "how much was lost" intentionally
+ * stays unmeasured.
  */
 export class LogBuffer {
   private remaining: number
@@ -47,28 +46,28 @@ export class LogBuffer {
   // under Node's native strip-only mode, which rejects non-erasable syntax —
   // and parameter properties are non-erasable.
   private readonly maxBytes: number
-  private readonly sink: (entry: CodeLogEntry) => void
+  private readonly sink: (text: string) => void
 
-  constructor(maxBytes: number, sink: (entry: CodeLogEntry) => void) {
+  constructor(maxBytes: number, sink: (text: string) => void) {
     this.maxBytes = maxBytes
     this.sink = sink
     this.remaining = maxBytes
   }
 
   /**
-   * Emit one entry to the sink, charging its text against the budget (drops + marks once exhausted).
-   * @param entry - the log entry to deliver.
+   * Emit text to the sink, charging it against the budget (drops + marks once exhausted).
+   * @param text - the captured text to deliver.
    */
-  push(entry: CodeLogEntry): void {
+  push(text: string): void {
     if (this.truncated) return
-    const cost = Buffer.byteLength(entry.text, 'utf8')
+    const cost = Buffer.byteLength(text, 'utf8')
     if (cost > this.remaining) {
       this.truncated = true
-      this.sink({ source: 'stderr', text: logTruncationMarker(this.maxBytes) })
+      this.sink(logTruncationMarker(this.maxBytes))
       return
     }
     this.remaining -= cost
-    this.sink(entry)
+    this.sink(text)
   }
 }
 
@@ -89,7 +88,7 @@ export function makeConsoleShim(logs: LogBuffer): Record<(typeof CONSOLE_LEVELS)
     args.map(arg => typeof arg === 'string' ? arg : inspect(arg, INSPECT_OPTIONS)).join(' ')
   const shim = Object.create(null) as Record<(typeof CONSOLE_LEVELS)[number], (...args: unknown[]) => void>
   for (const level of CONSOLE_LEVELS) {
-    shim[level] = (...args: unknown[]) => { logs.push({ source: 'console', level, text: render(args) }) }
+    shim[level] = (...args: unknown[]) => { logs.push(render(args)) }
   }
   return shim
 }
@@ -104,17 +103,16 @@ export function makeConsoleShim(logs: LogBuffer): Record<(typeof CONSOLE_LEVELS)
  * even for writes the exhausted budget drops.
  * @param logs - the buffer captured writes are pushed into.
  * @param stream - the stream whose `write` slot is patched.
- * @param source - the log source the captured writes are attributed to.
  * @returns the restore function (the in-process tests un-patch; the real
  *   worker never needs to).
  */
-export function captureStreamWrites(logs: LogBuffer, stream: PatchableStream, source: 'stdout' | 'stderr'): () => void {
+export function captureStreamWrites(logs: LogBuffer, stream: PatchableStream): () => void {
   // The slot's VALUE is stored for restore and reassigned — never invoked
   // detached, so the unbound-method concern does not apply.
   // eslint-disable-next-line @typescript-eslint/unbound-method
   const original = stream.write
   stream.write = (chunk: unknown, ...rest: unknown[]): boolean => {
-    logs.push({ source, text: typeof chunk === 'string' ? chunk : String(chunk) })
+    logs.push(typeof chunk === 'string' ? chunk : String(chunk))
     // Node's optional-encoding shape: the callback is whichever of the next
     // two positions holds a function (a non-function there is the encoding).
     const callback = [rest[0], rest[1]].find(
@@ -273,9 +271,9 @@ export async function runWorkerMain(
   data: WorkerBootData,
   streams: { stdout: PatchableStream; stderr: PatchableStream },
 ): Promise<void> {
-  const logs = new LogBuffer(data.maxLogBytes, (entry) => { port.postMessage({ type: 'log', entry }) })
-  captureStreamWrites(logs, streams.stdout, 'stdout')
-  captureStreamWrites(logs, streams.stderr, 'stderr')
+  const logs = new LogBuffer(data.maxLogBytes, (text) => { port.postMessage({ type: 'log', text }) })
+  captureStreamWrites(logs, streams.stdout)
+  captureStreamWrites(logs, streams.stderr)
 
   const pending = new Map<number, PendingCall>()
   wireReplies(port, pending)
diff --git a/packages/code-runtime/code-runtime-worker/src/index.ts b/packages/code-runtime/code-runtime-worker/src/index.ts
index 7a8024cb3d..1f659ad769 100644
--- a/packages/code-runtime/code-runtime-worker/src/index.ts
+++ b/packages/code-runtime/code-runtime-worker/src/index.ts
@@ -18,7 +18,7 @@ import { fileURLToPath } from 'node:url'
 import { Context } from 'cordis'
 import z from 'schemastery'
 import { CodeRuntime } from '@deepseek-ai/dsh-code-runtime'
-import type { CodeBindingFunction, CodeLogEntry, CodeRunFailure, CodeRunRequest, CodeRunResult } from '@deepseek-ai/dsh-code-runtime'
+import type { CodeBindingFunction, CodeRunFailure, CodeRunRequest, CodeRunResult } from '@deepseek-ai/dsh-code-runtime'
 import { prepareValue, truncateUtf8Bytes } from './bootstrap.ts'
 import { logTruncationMarker } from './protocol.ts'
 import type { ReplyMessage, WorkerBootData, WorkerToHost } from './protocol.ts'
@@ -118,10 +118,6 @@ function messageOf(error: unknown): string {
   return error instanceof Error ? error.message : String(error)
 }
 
-/** The log sources / console levels the seam vocabulary admits, as runtime sets for inbound-message validation. */
-const LOG_SOURCES = new Set<string>(['console', 'stdout', 'stderr'])
-const LOG_LEVELS = new Set<string>(['log', 'info', 'warn', 'error', 'debug'])
-
 /**
  * Runtime shape gate for inbound port traffic. The peer runs MODEL CODE and
  * can post anything — `null`, primitives, objects with poisoned fields — so
@@ -140,20 +136,8 @@ function parseWorkerMessage(raw: unknown): WorkerToHost | undefined {
       return { type: 'call', id: m.id, global: m.global, name: m.name, args: m.args }
     }
     case 'log': {
-      const entry = m.entry
-      if (typeof entry !== 'object' || entry === null) return undefined
-      const e = entry as Record<string, unknown>
-      if (typeof e.text !== 'string') return undefined
-      if (typeof e.source !== 'string' || !LOG_SOURCES.has(e.source)) return undefined
-      if (e.level !== undefined && (typeof e.level !== 'string' || !LOG_LEVELS.has(e.level))) return undefined
-      return {
-        type: 'log',
-        entry: {
-          source: e.source as CodeLogEntry['source'],
-          ...e.level !== undefined ? { level: e.level as Exclude<CodeLogEntry['level'], undefined> } : {},
-          text: e.text,
-        },
-      }
+      if (typeof m.text !== 'string') return undefined
+      return { type: 'log', text: m.text }
     }
     case 'done': {
       if (m.error === undefined) return { type: 'done', ...m.value !== undefined ? { value: m.value } : {} }
@@ -299,8 +283,8 @@ export class WorkerCodeRuntime extends CodeRuntime {
     return new Promise<CodeRunResult>((resolve) => {
       let settled = false
       const answered = new Set<number>()
-      const logs: CodeLogEntry[] = []
-      const strayLogs: CodeLogEntry[] = []
+      const logs: string[] = []
+      const strayLogs: string[] = []
 
       // ONE host-side ledger for everything that lands in `logs`/`strayLogs`,
       // whatever the path: honest port entries, FORGED port entries (model
@@ -310,26 +294,26 @@ export class WorkerCodeRuntime extends CodeRuntime {
       // so the documented cap is one shared `maxLogBytes` however it is hit.
       let logBudget = this.config.maxLogBytes
       let logsTruncated = false
-      const admit = (entry: CodeLogEntry, sink: CodeLogEntry[]): void => {
+      const admit = (text: string, sink: string[]): void => {
         if (logsTruncated) return
-        const cost = Buffer.byteLength(entry.text, 'utf8')
+        const cost = Buffer.byteLength(text, 'utf8')
         if (cost > logBudget) {
           logsTruncated = true
-          sink.push({ source: 'stderr', text: logTruncationMarker(this.config.maxLogBytes) })
+          sink.push(logTruncationMarker(this.config.maxLogBytes))
           return
         }
         logBudget -= cost
-        sink.push(entry)
+        sink.push(text)
       }
 
       // No settled guard: `finish` snapshots the arrays when it resolves, so
       // a chunk flushing after settlement mutates only the discarded buffers,
       // and the ledger bounds that growth until the pipes close.
-      const captureStray = (source: 'stdout' | 'stderr') => (chunk: Buffer) => {
-        admit({ source, text: chunk.toString('utf8') }, strayLogs)
+      const captureStray = (chunk: Buffer): void => {
+        admit(chunk.toString('utf8'), strayLogs)
       }
-      worker.stdout.on('data', captureStray('stdout'))
-      worker.stderr.on('data', captureStray('stderr'))
+      worker.stdout.on('data', captureStray)
+      worker.stderr.on('data', captureStray)
 
       // Settlement: exactly one outcome wins; every path funnels through
       // here, cleans up the timers/listeners, terminates the worker, and
@@ -404,7 +388,7 @@ export class WorkerCodeRuntime extends CodeRuntime {
         // this listener would crash the host process. Junk drops silently.
         const message = parseWorkerMessage(raw)
         if (!message) return
-        if (message.type === 'log' && !settled) admit(message.entry, logs)
+        if (message.type === 'log' && !settled) admit(message.text, logs)
         onCall(message)
         onDone(message)
       })
diff --git a/packages/code-runtime/code-runtime-worker/src/protocol.ts b/packages/code-runtime/code-runtime-worker/src/protocol.ts
index b8ea122c5b..65e6a0d60e 100644
--- a/packages/code-runtime/code-runtime-worker/src/protocol.ts
+++ b/packages/code-runtime/code-runtime-worker/src/protocol.ts
@@ -9,8 +9,6 @@
  * @module @deepseek-ai/dsh-code-runtime-worker/src/protocol
  */
 
-import type { CodeLogEntry } from '@deepseek-ai/dsh-code-runtime'
-
 /** What the host hands the worker at spawn, via `workerData`. */
 export interface WorkerBootData {
   /** The type-stripped (plain JS) program body. */
@@ -36,10 +34,10 @@ export interface CallMessage {
   args: unknown
 }
 
-/** Worker → host: one captured log entry, streamed eagerly so output survives a mid-run termination (timeout, abort, OOM). */
-export interface LogMessage {
+/** Worker → host: captured text, streamed eagerly so output survives a mid-run termination (timeout, abort, OOM). */
+interface LogMessage {
   type: 'log'
-  entry: CodeLogEntry
+  text: string
 }
 
 /**
diff --git a/packages/code-runtime/code-runtime-worker/tests/bootstrap.spec.ts b/packages/code-runtime/code-runtime-worker/tests/bootstrap.spec.ts
index e41f4455bb..111aa4f15f 100644
--- a/packages/code-runtime/code-runtime-worker/tests/bootstrap.spec.ts
+++ b/packages/code-runtime/code-runtime-worker/tests/bootstrap.spec.ts
@@ -1,9 +1,8 @@
 import { describe, expect, it } from 'vitest'
 import { EventEmitter } from 'node:events'
-import { LogBuffer, makeConsoleShim, makeNamespaces, captureStreamWrites, prepareValue, runWorkerMain, truncateUtf8Bytes, wireReplies } from '@deepseek-ai/dsh-code-runtime-worker/src/bootstrap.ts'
-import type { BootstrapPort, PatchableStream, PendingCall } from '@deepseek-ai/dsh-code-runtime-worker/src/bootstrap.ts'
-import type { ReplyMessage, WorkerToHost } from '@deepseek-ai/dsh-code-runtime-worker/src/protocol.ts'
-import type { CodeLogEntry } from '@deepseek-ai/dsh-code-runtime'
+import { LogBuffer, makeConsoleShim, makeNamespaces, captureStreamWrites, prepareValue, runWorkerMain, truncateUtf8Bytes, wireReplies } from '../src/bootstrap.ts'
+import type { BootstrapPort, PatchableStream, PendingCall } from '../src/bootstrap.ts'
+import type { ReplyMessage, WorkerToHost } from '../src/protocol.ts'
 
 /**
  * An in-process stand-in for the worker's parentPort: the test plays the
@@ -31,8 +30,8 @@ class FakePort implements BootstrapPort {
     this.emitter.emit('message', message)
   }
 
-  logs(): CodeLogEntry[] {
-    return this.sent.filter(message => message.type === 'log').map(message => message.entry)
+  logs(): string[] {
+    return this.sent.filter(message => message.type === 'log').map(message => message.text)
   }
 
   done(): WorkerToHost | undefined {
@@ -48,12 +47,12 @@ const BOOT = { maxLogBytes: 65_536, maxValueBytes: 32_768 }
 
 describe('LogBuffer', () => {
   it('streams entries to the sink until the byte budget, then emits one marker and drops the rest', () => {
-    const seen: CodeLogEntry[] = []
-    const buffer = new LogBuffer(10, entry => seen.push(entry))
-    buffer.push({ source: 'console', level: 'log', text: '12345' })
-    buffer.push({ source: 'console', level: 'log', text: '123456' })
-    buffer.push({ source: 'console', level: 'log', text: 'dropped' })
-    expect(seen.map(entry => entry.text)).toEqual([
+    const seen: string[] = []
+    const buffer = new LogBuffer(10, text => seen.push(text))
+    buffer.push('12345')
+    buffer.push('123456')
+    buffer.push('dropped')
+    expect(seen).toEqual([
       '12345',
       '[dsh-code-runtime-worker] log capture truncated at 10 bytes',
     ])
@@ -61,40 +60,37 @@ describe('LogBuffer', () => {
 })
 
 describe('makeConsoleShim', () => {
-  it('captures the five levels and renders non-strings inspect-style', () => {
-    const seen: CodeLogEntry[] = []
-    const shim = makeConsoleShim(new LogBuffer(1_000, entry => seen.push(entry)))
+  it('captures the five methods and renders non-strings inspect-style', () => {
+    const seen: string[] = []
+    const shim = makeConsoleShim(new LogBuffer(1_000, text => seen.push(text)))
     shim.log('plain', { a: 1 })
     shim.info('i')
     shim.warn('w')
     shim.error('e')
     shim.debug('d')
-    expect(seen.map(entry => entry.level)).toEqual(['log', 'info', 'warn', 'error', 'debug'])
-    expect(seen[0]?.text).toBe('plain { a: 1 }')
-    expect(seen.every(entry => entry.source === 'console')).toBe(true)
+    expect(seen).toEqual(['plain { a: 1 }', 'i', 'w', 'e', 'd'])
   })
 })
 
 describe('captureStreamWrites', () => {
   it('redirects writes into the buffer and restores on request', () => {
-    const seen: CodeLogEntry[] = []
-    const buffer = new LogBuffer(1_000, entry => seen.push(entry))
+    const seen: string[] = []
+    const buffer = new LogBuffer(1_000, text => seen.push(text))
     let underlying = ''
     const stream: PatchableStream = { write: (chunk: unknown) => { underlying += String(chunk); return true } }
-    const restore = captureStreamWrites(buffer, stream, 'stdout')
+    const restore = captureStreamWrites(buffer, stream)
     stream.write('captured', 'utf8')
     stream.write(Buffer.from('bytes'))
     restore()
     stream.write('after')
-    expect(seen.map(entry => entry.text)).toEqual(['captured', 'bytes'])
-    expect(seen[0]).toMatchObject({ source: 'stdout' })
+    expect(seen).toEqual(['captured', 'bytes'])
     expect(underlying).toBe('after')
   })
 
   it('invokes the write callback asynchronously, in both optional-encoding shapes', async () => {
     const buffer = new LogBuffer(1_000, () => {})
     const stream: PatchableStream = { write: () => true }
-    captureStreamWrites(buffer, stream, 'stdout')
+    captureStreamWrites(buffer, stream)
     const calls: (Error | null | undefined)[] = []
     stream.write('two-arg', (error?: Error | null) => calls.push(error))
     stream.write('three-arg', 'utf8', (error?: Error | null) => calls.push(error))
@@ -107,7 +103,7 @@ describe('captureStreamWrites', () => {
   it('still fires the callback for a write the exhausted budget drops', async () => {
     const buffer = new LogBuffer(4, () => {})
     const stream: PatchableStream = { write: () => true }
-    captureStreamWrites(buffer, stream, 'stdout')
+    captureStreamWrites(buffer, stream)
     stream.write('this write overflows the budget and is dropped')
     await new Promise<void>(resolve => stream.write('also dropped', resolve))
   })
@@ -210,7 +206,7 @@ describe('runWorkerMain', () => {
       code: 'const doubled = await tools.double({ n: 21 }); console.log("got", doubled); return { doubled };',
       namespaces: [{ global: 'tools', names: ['double'] }],
     }, fakeStreams())
-    expect(port.logs()).toEqual([{ source: 'console', level: 'log', text: 'got 42' }])
+    expect(port.logs()).toEqual(['got 42'])
     expect(port.done()).toEqual({ type: 'done', value: { doubled: 42 } })
   })
 
@@ -268,6 +264,6 @@ describe('runWorkerMain', () => {
     // The patch stays installed for the worker's lifetime; writes during the
     // program landed in order. Here the program wrote nothing via streams, so
     // only the post-run write above went through the patched slot.
-    expect(port.logs().at(-1)).toMatchObject({ source: 'stdout' })
+    expect(port.logs().at(-1)).toBe('never seen — already restored? no: patch persists in worker')
   })
 })
diff --git a/packages/code-runtime/code-runtime-worker/tests/built-lib.e2e.ts b/packages/code-runtime/code-runtime-worker/tests/built-lib.e2e.ts
index aac0ece8a1..2870bf8d4a 100644
--- a/packages/code-runtime/code-runtime-worker/tests/built-lib.e2e.ts
+++ b/packages/code-runtime/code-runtime-worker/tests/built-lib.e2e.ts
@@ -47,9 +47,9 @@ describe.skipIf(!built)('built lib real load path (plain node)', () => {
 
     expect(exitCode, `stderr:\n${stderr}`).toBe(0)
     const lastLine = stdout.trim().split('\n').at(-1) ?? ''
-    const result = JSON.parse(lastLine) as { value?: unknown; logs: { source: string; level?: string; text: string }[]; error?: unknown }
+    const result = JSON.parse(lastLine) as { value?: unknown; logs: string[]; error?: unknown }
     expect(result.error).toBeUndefined()
     expect(result.value).toBe(42)
-    expect(result.logs).toContainEqual({ source: 'console', level: 'log', text: 'halfway 42' })
+    expect(result.logs).toContain('halfway 42')
   })
 })
diff --git a/packages/code-runtime/code-runtime-worker/tests/runtime.spec.ts b/packages/code-runtime/code-runtime-worker/tests/runtime.spec.ts
index edc2bd1271..9754564702 100644
--- a/packages/code-runtime/code-runtime-worker/tests/runtime.spec.ts
+++ b/packages/code-runtime/code-runtime-worker/tests/runtime.spec.ts
@@ -28,7 +28,7 @@ describe('WorkerCodeRuntime — programs and bindings (real workers)', () => {
     expect(runtime.isolation).toBe('worker-thread')
   })
 
-  it('runs TypeScript (erasable syntax), captures console/stdout in order, returns the value', async () => {
+  it('runs TypeScript (erasable syntax), captures output in order, returns the value', async () => {
     const { runtime } = await setup()
     const result = await runtime.run({
       program: `
@@ -43,12 +43,7 @@ describe('WorkerCodeRuntime — programs and bindings (real workers)', () => {
     })
     expect(result.error).toBeUndefined()
     expect(result.value).toBe(3)
-    expect(result.logs.map(entry => [entry.source, entry.level ?? null])).toEqual([
-      ['console', 'log'],
-      ['stdout', null],
-      ['console', 'warn'],
-    ])
-    expect(result.logs[0]?.text).toBe('point { x: 1, y: 2 }')
+    expect(result.logs).toEqual(['point { x: 1, y: 2 }', 'raw-out\n', 'careful'])
   })
 
   it('bridges binding calls both ways and rejects the program-side call on a host rejection', async () => {
@@ -115,7 +110,7 @@ describe('WorkerCodeRuntime — programs and bindings (real workers)', () => {
       bindings: [],
     })
     expect(result.error?.kind).toBe('exception')
-    expect(result.logs.map(entry => entry.text)).toContain('before')
+    expect(result.logs).toContain('before')
   })
 })
 
@@ -210,8 +205,8 @@ describe('WorkerCodeRuntime — budgets and containment (real workers)', () => {
       program: 'for (let i = 0; i < 1000; i++) console.log("spam line", i); return 1',
       bindings: [],
     })
-    expect(result.logs.at(-1)?.text).toContain('truncated at 300 bytes')
-    const total = result.logs.reduce((sum, entry) => sum + Buffer.byteLength(entry.text, 'utf8'), 0)
+    expect(result.logs.at(-1)).toContain('truncated at 300 bytes')
+    const total = result.logs.reduce((sum, text) => sum + Buffer.byteLength(text, 'utf8'), 0)
     expect(total).toBeLessThan(1_000)
   })
 
@@ -241,7 +236,7 @@ describe('WorkerCodeRuntime — budgets and containment (real workers)', () => {
     })
     expect(result.error).toBeUndefined()
     expect(result.value).toBe('done')
-    expect(result.logs).toContainEqual({ source: 'stdout', text: 'flushed' })
+    expect(result.logs).toContain('flushed')
   })
 
   it('caps a huge container whose bounded rendering is small (wire size, not rendering, is what counts)', async () => {
@@ -270,8 +265,8 @@ describe('WorkerCodeRuntime — budgets and containment (real workers)', () => {
       bindings: [],
     })
     expect(result.error).toBeUndefined()
-    expect(result.logs).toContainEqual({ source: 'stdout', text: 'abcd' })
-    expect(result.logs.map(entry => entry.text)).not.toContain('ef')
+    expect(result.logs).toContain('abcd')
+    expect(result.logs).not.toContain('ef')
   }, 15_000)
 })
 
@@ -306,11 +301,9 @@ describe('WorkerCodeRuntime — hostile programs (real workers)', () => {
           { type: 'call', id: 1e9, global: 7, name: 'real', args: {} },
           { type: 'call', id: 1e9, global: 'tools', name: 7, args: {} },
           { type: 'log' },
-          { type: 'log', entry: null },
-          { type: 'log', entry: { source: 'stdout', text: 7 } },
-          { type: 'log', entry: { source: 'nope', text: 'x' } },
-          { type: 'log', entry: { source: 'console', level: 'nope', text: 'x' } },
-          { type: 'log', entry: { source: 'console', level: 7, text: 'x' } },
+          { type: 'log', text: null },
+          { type: 'log', text: 7 },
+          { type: 'log', text: {} },
           { type: 'done', error: 5 },
           { type: 'done', error: { message: 5 } },
         ]) parentPort.postMessage(junk);
@@ -331,7 +324,7 @@ describe('WorkerCodeRuntime — hostile programs (real workers)', () => {
       // code and an unbounded result.
       program: `
         const { parentPort } = await import('node:worker_threads');
-        for (let i = 0; i < 50; i++) parentPort.postMessage({ type: 'log', entry: { source: 'stdout', text: 'F'.repeat(100), forged: true } });
+        for (let i = 0; i < 50; i++) parentPort.postMessage({ type: 'log', text: 'F'.repeat(100), forged: true });
         parentPort.postMessage({ type: 'done', value: 'V'.repeat(100000) });
         for (;;) {}
       `,
@@ -343,10 +336,9 @@ describe('WorkerCodeRuntime — hostile programs (real workers)', () => {
     expect(value.endsWith('… [truncated]')).toBe(true)
     expect(value.length).toBeLessThan(120)
     const marker = '[dsh-code-runtime-worker] log capture truncated at 200 bytes'
-    const total = result.logs.reduce((sum, entry) => sum + Buffer.byteLength(entry.text, 'utf8'), 0)
+    const total = result.logs.reduce((sum, text) => sum + Buffer.byteLength(text, 'utf8'), 0)
     expect(total).toBeLessThanOrEqual(200 + Buffer.byteLength(marker, 'utf8'))
-    expect(result.logs.at(-1)?.text).toBe(marker)
-    expect(result.logs.every(entry => !('forged' in entry))).toBe(true)
+    expect(result.logs.at(-1)).toBe(marker)
   })
 
   it('accepts a forged done carrying both value and error (self-sabotage, contained)', async () => {
diff --git a/packages/code-runtime/code-runtime/README.md b/packages/code-runtime/code-runtime/README.md
index 20c9274b9c..20a92ed526 100644
--- a/packages/code-runtime/code-runtime/README.md
+++ b/packages/code-runtime/code-runtime/README.md
@@ -16,4 +16,4 @@ Semantics every implementation must honor (contract details in the class JSDoc):
 
 ## Vocabulary
 
-`CodeRunRequest` (`program`, `bindings`, `signal?`) carries everything the runtime acts on — defaulting (time budgets, output caps) is the implementation's validated config, never a hidden `??` inside `run()`. `bindings` is a list of `CodeBindingNamespace`s (`global` + `functions`), each exposed to the program as one global object of async callables. `CodeRunResult` reports the completion `value?`, the ordered `logs` (`CodeLogEntry`: `console`/`stdout`/`stderr` source, console `level`, capped text), and the `error?` (`CodeRunFailure`: `kind` + model-feedable `message`). See `src/types.ts` for the full contracts.
+`CodeRunRequest` (`program`, `bindings`, `signal?`) carries everything the runtime acts on — defaulting (time budgets, output caps) is the implementation's validated config, never a hidden `??` inside `run()`. `bindings` is a list of `CodeBindingNamespace`s (`global` + `functions`), each exposed to the program as one global object of async callables. `CodeRunResult` reports the completion `value?`, ordered capped `logs: string[]`, and the `error?` (`CodeRunFailure`: `kind` + model-feedable `message`). See `src/types.ts` for the full contracts.
diff --git a/packages/code-runtime/code-runtime/src/index.ts b/packages/code-runtime/code-runtime/src/index.ts
index 5595469afe..8548b4adb2 100644
--- a/packages/code-runtime/code-runtime/src/index.ts
+++ b/packages/code-runtime/code-runtime/src/index.ts
@@ -22,7 +22,6 @@ import type { CodeRunRequest, CodeRunResult } from './types.ts'
 export type {
   CodeBindingFunction,
   CodeBindingNamespace,
-  CodeLogEntry,
   CodeRunFailure,
   CodeRunRequest,
   CodeRunResult,
diff --git a/packages/code-runtime/code-runtime/src/types.ts b/packages/code-runtime/code-runtime/src/types.ts
index 8278f33a39..d7669a4785 100644
--- a/packages/code-runtime/code-runtime/src/types.ts
+++ b/packages/code-runtime/code-runtime/src/types.ts
@@ -54,20 +54,6 @@ export interface CodeRunRequest {
   signal?: AbortSignal
 }
 
-/**
- * One captured output entry, in emission order. `source` says which channel
- * produced it: the program's `console` (shimmed by the runtime), or a stray
- * write to the underlying stdout/stderr streams.
- */
-export interface CodeLogEntry {
-  /** Which channel produced the text. */
-  source: 'console' | 'stdout' | 'stderr'
-  /** The console method used; present only when `source` is `'console'`. */
-  level?: 'log' | 'info' | 'warn' | 'error' | 'debug'
-  /** The captured text (possibly truncated by the implementation's caps, marked in-band). */
-  text: string
-}
-
 /**
  * Why a run failed. The kinds are orthogonal outcomes reported independently
  * (per docs/defensive-patterns.md): a budget expiry is not an exception, an
@@ -98,8 +84,8 @@ export interface CodeRunResult {
    * or value-less run leaves this absent.
    */
   value?: unknown
-  /** Everything the program emitted, in order (capped by the implementation). */
-  logs: CodeLogEntry[]
+  /** Text the program emitted, in order (capped by the implementation). */
+  logs: string[]
   /** Present iff the run failed; see {@link CodeRunFailure} for the taxonomy. */
   error?: CodeRunFailure
 }
diff --git a/packages/code-runtime/code-runtime/tests/service.spec.ts b/packages/code-runtime/code-runtime/tests/service.spec.ts
index 4ff6d8f313..7811ef0531 100644
--- a/packages/code-runtime/code-runtime/tests/service.spec.ts
+++ b/packages/code-runtime/code-runtime/tests/service.spec.ts
@@ -55,7 +55,7 @@ describe('CodeRuntime service seam', () => {
   it('reports a failed run as an error field on a resolved result, never a rejection', async () => {
     const { runtime } = await setup()
     runtime.nextResult = {
-      logs: [{ source: 'console', level: 'error', text: 'boom' }],
+      logs: ['boom'],
       error: { kind: 'exception', message: 'boom' },
     }
     const result = await runtime.run({ program: 'throw new Error("boom")', bindings: [] })
diff --git a/packages/cordis/tool-cordis/src/api-catalog.ts b/packages/cordis/tool-cordis/src/api-catalog.ts
index 51a8f52082..2df7290a3f 100644
--- a/packages/cordis/tool-cordis/src/api-catalog.ts
+++ b/packages/cordis/tool-cordis/src/api-catalog.ts
@@ -598,10 +598,6 @@ export const TYPE_API: readonly TypeApiEntry[] = [
     name: 'CodeBindingNamespace',
     declaration: 'export interface CodeBindingNamespace {\n    global: string;\n    functions: Record<string, CodeBindingFunction>;\n}',
   },
-  {
-    name: 'CodeLogEntry',
-    declaration: 'export interface CodeLogEntry {\n    source: \'console\' | \'stdout\' | \'stderr\';\n    level?: \'log\' | \'info\' | \'warn\' | \'error\' | \'debug\';\n    text: string;\n}',
-  },
   {
     name: 'CodeRunFailure',
     declaration: 'export interface CodeRunFailure {\n    kind: \'exception\' | \'timeout\' | \'abort\' | \'worker-exit\';\n    message: string;\n}',
@@ -612,7 +608,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'CodeRunResult',
-    declaration: 'export interface CodeRunResult {\n    value?: unknown;\n    logs: CodeLogEntry[];\n    error?: CodeRunFailure;\n}',
+    declaration: 'export interface CodeRunResult {\n    value?: unknown;\n    logs: string[];\n    error?: CodeRunFailure;\n}',
   },
   {
     name: 'CollectedOutput',
diff --git a/packages/core/tools/src/code-mode.ts b/packages/core/tools/src/code-mode.ts
index 323fbeed2b..8ed73383c1 100644
--- a/packages/core/tools/src/code-mode.ts
+++ b/packages/core/tools/src/code-mode.ts
@@ -126,14 +126,13 @@ function renderValue(value: unknown): string {
 /** The run_code result's `meta` payload (JSON-serializable; `presentResult` narrows it back). */
 interface RunCodeMeta {
   logs: CodeRunResult['logs']
-  dispatches: number
 }
 
 /** Soft-narrow a result `meta` back to {@link RunCodeMeta} (replay may carry older shapes; presentation must not throw). */
 function asRunCodeMeta(meta: unknown): RunCodeMeta | undefined {
   if (typeof meta !== 'object' || meta === null) return undefined
   const m = meta as Record<string, unknown>
-  if (!Array.isArray(m.logs) || typeof m.dispatches !== 'number') return undefined
+  if (!Array.isArray(m.logs) || !m.logs.every(log => typeof log === 'string')) return undefined
   return m as unknown as RunCodeMeta
 }
 
@@ -283,12 +282,12 @@ export function createRunCodeTool(registry: ToolRegistry, requireRuntime: () =>
         }
 
         if (result.error) {
-          const logsText = result.logs.length > 0 ? `\nCaptured output:\n${result.logs.map(entry => entry.text).join('\n')}` : ''
+          const logsText = result.logs.length > 0 ? `\nCaptured output:\n${result.logs.join('\n')}` : ''
           throw new CodeRunFailedError(`code run failed (${result.error.kind}): ${result.error.message}${logsText}`)
         }
         const rendered = renderValue(result.value)
-        const parts = [result.logs.map(entry => entry.text).join('\n'), rendered].filter(part => part.length > 0)
-        const meta: RunCodeMeta = { logs: result.logs, dispatches }
+        const parts = [result.logs.join('\n'), rendered].filter(part => part.length > 0)
+        const meta: RunCodeMeta = { logs: result.logs }
         return {
           content: [{ type: 'text', text: parts.length > 0 ? parts.join('\n') : '(run_code completed with no output)' }],
           meta,
@@ -316,7 +315,7 @@ export function createRunCodeTool(registry: ToolRegistry, requireRuntime: () =>
     presentResult: (_args, result) => {
       const meta = asRunCodeMeta(result.meta)
       if (!meta) return undefined
-      const output = meta.logs.map(entry => entry.text).join('\n')
+      const output = meta.logs.join('\n')
       return {
         card: 'generic',
         ...output.length > 0 ? { content: [{ type: 'text' as const, text: output }] } : {},
diff --git a/packages/core/tools/tests/code-mode.spec.ts b/packages/core/tools/tests/code-mode.spec.ts
index f9d84aadbf..1ae7aae4ec 100644
--- a/packages/core/tools/tests/code-mode.spec.ts
+++ b/packages/core/tools/tests/code-mode.spec.ts
@@ -328,7 +328,7 @@ describe('the run_code dispatch bridge', () => {
       const tools = request.bindings[0]!.functions
       const first = await tools.echo!({ value: 'one' })
       const second = await tools.echo!({ value: 'two' })
-      return { logs: [{ source: 'console', level: 'log', text: `saw ${String(first)}` }], value: second }
+      return { logs: [`saw ${String(first)}`], value: second }
     }
     const result = await runCode(ctx, 'const …: string = …', { agent })
     expect(result.isError).toBe(false)
@@ -339,7 +339,7 @@ describe('the run_code dispatch bridge', () => {
       { parentCallId: 'call-1', subCallId: 'call-1:code:1', name: 'echo', arguments: { value: 'one' }, isError: false, resultSummary: 'echo:one' },
       { parentCallId: 'call-1', subCallId: 'call-1:code:2', name: 'echo', arguments: { value: 'two' }, isError: false, resultSummary: 'echo:two' },
     ])
-    expect(result.meta).toEqual({ logs: [{ source: 'console', level: 'log', text: 'saw echo:one' }], dispatches: 2 })
+    expect(result.meta).toEqual({ logs: ['saw echo:one'] })
   })
 
   it('exposes only an opaque parent token to nested result observers', async () => {
@@ -505,7 +505,7 @@ describe('the run_code dispatch bridge', () => {
   it('converts a failed run into a structured isError result carrying kind, message, and captured logs', async () => {
     const { ctx, runtime } = await setup({ mode: 'code' })
     runtime.behavior = () => Promise.resolve({
-      logs: [{ source: 'console', level: 'log', text: 'got this far' }],
+      logs: ['got this far'],
       error: { kind: 'timeout', message: 'compute budget exhausted (300ms busy)' },
     })
     const result = await runCode(ctx, 'program')
@@ -632,7 +632,7 @@ describe('the run_code dispatch bridge', () => {
     const view = tool.presentResult?.({ code: 'return 1' }, {
       content: [{ type: 'text', text: 'model-facing' }],
       isError: false,
-      meta: { logs: [{ source: 'console', level: 'log', text: 'printed' }], dispatches: 1 },
+      meta: { logs: ['printed'] },
     })
     // The result omits the title — an update replaces only provided fields,
     // so the pending card's program title persists through completion.
@@ -641,9 +641,10 @@ describe('the run_code dispatch bridge', () => {
       content: [{ type: 'text', text: 'printed' }],
     })
     // No captured output → no content either; everything pending persists.
-    expect(tool.presentResult?.({ code: 'x' }, { content: [], isError: false, meta: { logs: [], dispatches: 2 } }))
+    expect(tool.presentResult?.({ code: 'x' }, { content: [], isError: false, meta: { logs: [] } }))
       .toEqual({ card: 'generic' })
     // Replay with an unrecognizable meta falls back to the generic rendering.
+    expect(tool.presentResult?.({ code: 'x' }, { content: [], isError: false, meta: { logs: [{ text: 'legacy' }], dispatches: 1 } })).toBeUndefined()
     expect(tool.presentResult?.({ code: 'x' }, { content: [], isError: false, meta: { other: true } })).toBeUndefined()
     expect(tool.presentResult?.({ code: 'x' }, { content: [], isError: false })).toBeUndefined()
   })
diff --git a/scripts/type-equiv.manifest.json b/scripts/type-equiv.manifest.json
index a219ea1b1d..d3572387aa 100644
--- a/scripts/type-equiv.manifest.json
+++ b/scripts/type-equiv.manifest.json
@@ -92,7 +92,6 @@
     { "doc": "docs/core-data-structures/code-runtime.md", "symbol": "CodeRunResult", "source": "packages/code-runtime/code-runtime/src/types.ts" },
     { "doc": "docs/core-data-structures/code-runtime.md", "symbol": "CodeBindingNamespace", "source": "packages/code-runtime/code-runtime/src/types.ts" },
     { "doc": "docs/core-data-structures/code-runtime.md", "symbol": "CodeBindingFunction", "source": "packages/code-runtime/code-runtime/src/types.ts" },
-    { "doc": "docs/core-data-structures/code-runtime.md", "symbol": "CodeLogEntry", "source": "packages/code-runtime/code-runtime/src/types.ts" },
     { "doc": "docs/core-data-structures/code-runtime.md", "symbol": "CodeRunFailure", "source": "packages/code-runtime/code-runtime/src/types.ts" },
 
     { "doc": "docs/core-data-structures/filesystem.md", "symbol": "FsTarget", "source": "packages/fs/fs/src/types.ts" },

From a11396e43cb57fd1523784dcfbe621f68f908967 Mon Sep 17 00:00:00 2001
From: Tianyi Cui <53024+tianyicui@users.noreply.github.com>
Date: Tue, 14 Jul 2026 03:09:53 +0800
Subject: [PATCH 2/5] test: refresh code runtime snapshots

---
 .../acp-agent/tests/snapshots/advanced-toolchain/session.jsonl  | 2 +-
 examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl | 2 +-
 examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl
index bb74382b22..ac833c32d8 100644
--- a/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/advanced-toolchain/session.jsonl
@@ -21,7 +21,7 @@
 {"type":"assistant/message","seq":19,"time":1783957884490,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}],"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[14,15,16,17,18],"surfaceOp":"append"}
 {"type":"tool/call","seq":20,"time":1783957884490,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\":\"return await tools.cordis_inspect({ what: 'dynamic' })\"}"}}
 {"type":"tool/code-dispatch","seq":21,"time":1783957884560,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"cordis_inspect","arguments":{"what":"dynamic"},"isError":false,"resultSummary":"## dynamic\n- dyn-1: snapshot-marker [active]"}}
-{"type":"tool/result","seq":22,"time":1783957884561,"data":{"turn":1,"step":2,"callId":"advanced-code","content":[{"type":"text","text":"## dynamic\n- dyn-1: snapshot-marker [active]"}],"isError":false,"meta":{"logs":[],"dispatches":1}},"sourceEventSeqs":[20],"surfaceOp":"append"}
+{"type":"tool/result","seq":22,"time":1783957884561,"data":{"turn":1,"step":2,"callId":"advanced-code","content":[{"type":"text","text":"## dynamic\n- dyn-1: snapshot-marker [active]"}],"isError":false,"meta":{"logs":[]}},"sourceEventSeqs":[20],"surfaceOp":"append"}
 {"type":"step/end","seq":23,"time":1783957884561,"data":{"turn":1,"step":2}}
 {"type":"step/start","seq":24,"time":1783957884562,"data":{"turn":1,"step":3}}
 {"type":"assistant/chunk","seq":25,"time":1783950000026,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
diff --git a/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl b/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl
index b49097188e..926b1e3389 100644
--- a/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/both-mode-turn/session.jsonl
@@ -87,7 +87,7 @@
 {"type":"assistant/message","seq":85,"time":1783611775503,"data":{"turn":1,"step":1,"content":[{"type":"reasoning","text":"The user wants me to use the `run_code` tool to execute a program that calls `tools.bash` with the command `echo BOTH_OK` and returns its output."},{"type":"tool-call","id":"call_00_AZFzvUwuC4vAUoICrfke5147","name":"run_code","arguments":"{\"code\": \"const result = await tools.bash({ command: \\\"echo BOTH_OK\\\", description: \\\"Echo BOTH_OK\\\" });\\nreturn result;\"}"}],"usage":{"inputTokens":5530,"outputTokens":108,"cacheReadTokens":0,"reasoningTokens":37}},"sourceEventSeqs":[4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84],"surfaceOp":"append"}
 {"type":"tool/call","seq":86,"time":1783611775504,"data":{"turn":1,"step":1,"callId":"call_00_AZFzvUwuC4vAUoICrfke5147","name":"run_code","arguments":"{\"code\": \"const result = await tools.bash({ command: \\\"echo BOTH_OK\\\", description: \\\"Echo BOTH_OK\\\" });\\nreturn result;\"}"}}
 {"type":"tool/code-dispatch","seq":87,"time":1783611775590,"data":{"parentCallId":"call_00_AZFzvUwuC4vAUoICrfke5147","subCallId":"call_00_AZFzvUwuC4vAUoICrfke5147:code:1","name":"bash","arguments":{"command":"echo BOTH_OK","description":"Echo BOTH_OK"},"isError":false,"resultSummary":"BOTH_OK\n"}}
-{"type":"tool/result","seq":88,"time":1783611775592,"data":{"turn":1,"step":1,"callId":"call_00_AZFzvUwuC4vAUoICrfke5147","content":[{"type":"text","text":"BOTH_OK\n"}],"isError":false,"meta":{"logs":[],"dispatches":1}},"sourceEventSeqs":[86],"surfaceOp":"append"}
+{"type":"tool/result","seq":88,"time":1783611775592,"data":{"turn":1,"step":1,"callId":"call_00_AZFzvUwuC4vAUoICrfke5147","content":[{"type":"text","text":"BOTH_OK\n"}],"isError":false,"meta":{"logs":[]}},"sourceEventSeqs":[86],"surfaceOp":"append"}
 {"type":"step/end","seq":89,"time":1783611775592,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":90,"time":1783611775592,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":91,"time":1783611776183,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}
diff --git a/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl b/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl
index 9367e2deb0..7b79bd07cb 100644
--- a/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/code-mode-turn/session.jsonl
@@ -112,7 +112,7 @@
 {"type":"tool/call","seq":110,"time":1783611772840,"data":{"turn":1,"step":1,"callId":"call_00_DRxnM6R1TThfDwcudW0f2050","name":"run_code","arguments":"{\"code\": \"const out1 = await tools.bash({ command: \\\"echo CODE_ONE\\\", description: \\\"First echo\\\" });\\nconst out2 = await tools.bash({ command: \\\"echo CODE_TWO\\\", description: \\\"Second echo\\\" });\\nreturn out1.trim() + \\\"+\\\" + out2.trim();\"}"}}
 {"type":"tool/code-dispatch","seq":111,"time":1783611772933,"data":{"parentCallId":"call_00_DRxnM6R1TThfDwcudW0f2050","subCallId":"call_00_DRxnM6R1TThfDwcudW0f2050:code:1","name":"bash","arguments":{"command":"echo CODE_ONE","description":"First echo"},"isError":false,"resultSummary":"CODE_ONE\n"}}
 {"type":"tool/code-dispatch","seq":112,"time":1783611772936,"data":{"parentCallId":"call_00_DRxnM6R1TThfDwcudW0f2050","subCallId":"call_00_DRxnM6R1TThfDwcudW0f2050:code:2","name":"bash","arguments":{"command":"echo CODE_TWO","description":"Second echo"},"isError":false,"resultSummary":"CODE_TWO\n"}}
-{"type":"tool/result","seq":113,"time":1783611772937,"data":{"turn":1,"step":1,"callId":"call_00_DRxnM6R1TThfDwcudW0f2050","content":[{"type":"text","text":"CODE_ONE+CODE_TWO"}],"isError":false,"meta":{"logs":[],"dispatches":2}},"sourceEventSeqs":[110],"surfaceOp":"append"}
+{"type":"tool/result","seq":113,"time":1783611772937,"data":{"turn":1,"step":1,"callId":"call_00_DRxnM6R1TThfDwcudW0f2050","content":[{"type":"text","text":"CODE_ONE+CODE_TWO"}],"isError":false,"meta":{"logs":[]}},"sourceEventSeqs":[110],"surfaceOp":"append"}
 {"type":"step/end","seq":114,"time":1783611772938,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":115,"time":1783611772938,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":116,"time":1783611773376,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}

From 4f40197e169c6f8dadf756ca514b824a9050f58d Mon Sep 17 00:00:00 2001
From: Tianyi Cui <53024+tianyicui@users.noreply.github.com>
Date: Tue, 14 Jul 2026 03:18:16 +0800
Subject: [PATCH 3/5] fix: complete code runtime surface pruning

---
 packages/code-runtime/code-runtime-worker/src/index.ts      | 3 ---
 .../snapshots/python-sdk-single-exe/advanced/result.json    | 6 ++----
 .../snapshots/python-sdk-single-exe/advanced/session.jsonl  | 2 +-
 3 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/packages/code-runtime/code-runtime-worker/src/index.ts b/packages/code-runtime/code-runtime-worker/src/index.ts
index 1f659ad769..96477cf793 100644
--- a/packages/code-runtime/code-runtime-worker/src/index.ts
+++ b/packages/code-runtime/code-runtime-worker/src/index.ts
@@ -23,9 +23,6 @@ import { prepareValue, truncateUtf8Bytes } from './bootstrap.ts'
 import { logTruncationMarker } from './protocol.ts'
 import type { ReplyMessage, WorkerBootData, WorkerToHost } from './protocol.ts'
 
-export type { BootstrapPort, PatchableStream } from './bootstrap.ts'
-export type { CallMessage, DoneMessage, ReplyMessage, WorkerBootData, WorkerToHost } from './protocol.ts'
-
 /** Plugin config: every execution cap, changeable from `cordis.yml` (no hardcoded tunables). */
 export interface Config {
   /**
diff --git a/scripts/snapshots/python-sdk-single-exe/advanced/result.json b/scripts/snapshots/python-sdk-single-exe/advanced/result.json
index 2ecfc76a2e..ca89b2d9a9 100644
--- a/scripts/snapshots/python-sdk-single-exe/advanced/result.json
+++ b/scripts/snapshots/python-sdk-single-exe/advanced/result.json
@@ -408,8 +408,7 @@
         ],
         "isError": false,
         "meta": {
-          "logs": [],
-          "dispatches": 1
+          "logs": []
         }
       },
       "sourceEventSeqs": [
@@ -1606,8 +1605,7 @@
             ],
             "isError": false,
             "meta": {
-              "logs": [],
-              "dispatches": 1
+              "logs": []
             }
           },
           "sourceEventSeqs": [
diff --git a/scripts/snapshots/python-sdk-single-exe/advanced/session.jsonl b/scripts/snapshots/python-sdk-single-exe/advanced/session.jsonl
index bb0ee1d4d0..82fb190727 100644
--- a/scripts/snapshots/python-sdk-single-exe/advanced/session.jsonl
+++ b/scripts/snapshots/python-sdk-single-exe/advanced/session.jsonl
@@ -22,7 +22,7 @@
 {"type":"assistant/message","seq":20,"time":0,"data":{"turn":1,"step":2,"content":[{"type":"tool-call","id":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.snapshot_double({ value: 21 })\"}"}],"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[15,16,17,18,19],"surfaceOp":"append"}
 {"type":"tool/call","seq":21,"time":0,"data":{"turn":1,"step":2,"callId":"advanced-code","name":"run_code","arguments":"{\"code\": \"return await tools.snapshot_double({ value: 21 })\"}"}}
 {"type":"tool/code-dispatch","seq":22,"time":0,"data":{"parentCallId":"advanced-code","subCallId":"advanced-code:code:1","name":"snapshot_double","arguments":{"value":21},"isError":false,"resultSummary":"42"}}
-{"type":"tool/result","seq":23,"time":0,"data":{"turn":1,"step":2,"callId":"advanced-code","content":[{"type":"text","text":"42"}],"isError":false,"meta":{"logs":[],"dispatches":1}},"sourceEventSeqs":[21],"surfaceOp":"append"}
+{"type":"tool/result","seq":23,"time":0,"data":{"turn":1,"step":2,"callId":"advanced-code","content":[{"type":"text","text":"42"}],"isError":false,"meta":{"logs":[]}},"sourceEventSeqs":[21],"surfaceOp":"append"}
 {"type":"step/end","seq":24,"time":0,"data":{"turn":1,"step":2}}
 {"type":"step/start","seq":25,"time":0,"data":{"turn":1,"step":3}}
 {"type":"assistant/chunk","seq":26,"time":0,"data":{"turn":1,"step":3,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}

From 5e9131e824a86dc2fcdaf910569b1fbf7d4cc72c Mon Sep 17 00:00:00 2001
From: Tianyi Cui <53024+tianyicui@users.noreply.github.com>
Date: Tue, 14 Jul 2026 03:19:33 +0800
Subject: [PATCH 4/5] chore: sync code runtime surface catalog

---
 docs/config-catalog.md                                    | 2 +-
 packages/code-runtime/code-runtime-worker/src/protocol.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/config-catalog.md b/docs/config-catalog.md
index f785fdf337..d117c13498 100644
--- a/docs/config-catalog.md
+++ b/docs/config-catalog.md
@@ -212,7 +212,7 @@ export interface Config {
 }
 ```
 
-Source: [`packages/code-runtime/code-runtime-worker/src/index.ts:30`](../packages/code-runtime/code-runtime-worker/src/index.ts)
+Source: [`packages/code-runtime/code-runtime-worker/src/index.ts:27`](../packages/code-runtime/code-runtime-worker/src/index.ts)
 
 ## `@deepseek-ai/dsh-compact-basic`
 
diff --git a/packages/code-runtime/code-runtime-worker/src/protocol.ts b/packages/code-runtime/code-runtime-worker/src/protocol.ts
index 65e6a0d60e..663e407400 100644
--- a/packages/code-runtime/code-runtime-worker/src/protocol.ts
+++ b/packages/code-runtime/code-runtime-worker/src/protocol.ts
@@ -22,7 +22,7 @@ export interface WorkerBootData {
 }
 
 /** Worker → host: one bridged binding call. */
-export interface CallMessage {
+interface CallMessage {
   type: 'call'
   /** Worker-issued correlation id; the host answers each id at most once and ignores duplicates. */
   id: number

From 26e2fe9356bf1c65a8022dac8492be257ebb722a Mon Sep 17 00:00:00 2001
From: Tianyi Cui <53024+tianyicui@users.noreply.github.com>
Date: Tue, 14 Jul 2026 04:41:23 +0800
Subject: [PATCH 5/5] refactor: drop assembled section order echo

---
 docs/config-catalog.md                        |  2 +-
 docs/cordis-catalog/services.md               |  2 +-
 packages/bash/tool-bash/tests/tools.spec.ts   | 10 ++++++-
 .../cordis/tool-cordis/src/api-catalog.ts     |  2 +-
 packages/core/system-prompt/src/index.ts      |  9 ++-----
 .../core/system-prompt/tests/scoped.spec.ts   |  2 +-
 .../system-prompt/tests/system-prompt.spec.ts | 26 +++++++++----------
 7 files changed, 28 insertions(+), 25 deletions(-)

diff --git a/docs/config-catalog.md b/docs/config-catalog.md
index f785fdf337..674970f703 100644
--- a/docs/config-catalog.md
+++ b/docs/config-catalog.md
@@ -813,7 +813,7 @@ export interface Config {
 }
 ```
 
-Source: [`packages/core/system-prompt/src/index.ts:227`](../packages/core/system-prompt/src/index.ts)
+Source: [`packages/core/system-prompt/src/index.ts:223`](../packages/core/system-prompt/src/index.ts)
 
 ## `@deepseek-ai/dsh-tool-cordis`
 
diff --git a/docs/cordis-catalog/services.md b/docs/cordis-catalog/services.md
index 28d1904ecf..c236baf23e 100644
--- a/docs/cordis-catalog/services.md
+++ b/docs/cordis-catalog/services.md
@@ -257,7 +257,7 @@ variable(name: string, provider: (context: AssembleContext) => string | undefine
 async assemble(context: AssembleContext = {}): Promise<PromptAssembly>
 ```
 
-Source: [`packages/core/system-prompt/src/index.ts:342`](../../packages/core/system-prompt/src/index.ts)
+Source: [`packages/core/system-prompt/src/index.ts:338`](../../packages/core/system-prompt/src/index.ts)
 
 ## `ctx.tools` — `ToolRegistry`
 
diff --git a/packages/bash/tool-bash/tests/tools.spec.ts b/packages/bash/tool-bash/tests/tools.spec.ts
index 12b4a53958..6041033314 100644
--- a/packages/bash/tool-bash/tests/tools.spec.ts
+++ b/packages/bash/tool-bash/tests/tools.spec.ts
@@ -293,9 +293,17 @@ describe('bash tool', () => {
 
   it('contributes the exit-code habit as its prompt section (guidance the descriptions cannot carry)', async () => {
     const ctx = await setup()
+    ctx.systemPrompt.section({ name: 'test:before-bash', order: 104, text: 'before' })
+    ctx.systemPrompt.section({ name: 'test:after-bash', order: 106, text: 'after' })
     const assembly = await ctx.systemPrompt.assemble()
     const section = assembly.sections.find(s => s.name === 'tool:bash')
-    expect(section?.order).toBe(105)
+    expect(assembly.sections.map(s => s.name)).toEqual([
+      'harness:identity',
+      'deployment:persona',
+      'test:before-bash',
+      'tool:bash',
+      'test:after-bash',
+    ])
     expect(section?.text).toContain('[exit code: N]')
   })
 
diff --git a/packages/cordis/tool-cordis/src/api-catalog.ts b/packages/cordis/tool-cordis/src/api-catalog.ts
index 51a8f52082..9b8f016ca5 100644
--- a/packages/cordis/tool-cordis/src/api-catalog.ts
+++ b/packages/cordis/tool-cordis/src/api-catalog.ts
@@ -544,7 +544,7 @@ export const TYPE_API: readonly TypeApiEntry[] = [
   },
   {
     name: 'AssembledSection',
-    declaration: 'export interface AssembledSection {\n    name: string;\n    order: number;\n    text: string;\n}',
+    declaration: 'export interface AssembledSection {\n    name: string;\n    text: string;\n}',
   },
   {
     name: 'BashExecRequest',
diff --git a/packages/core/system-prompt/src/index.ts b/packages/core/system-prompt/src/index.ts
index b886b4c774..ad1fba9f1e 100644
--- a/packages/core/system-prompt/src/index.ts
+++ b/packages/core/system-prompt/src/index.ts
@@ -103,10 +103,6 @@ export interface PromptSection {
 export interface AssembledSection {
   /** The contributing section's unique name. */
   name: string
-  // TODO(assembled-section-order): drop this output field; registry order has
-  // already sorted the array, and no production renderer/listener reads it.
-  /** The contributing section's order (sections arrive sorted ascending). */
-  order: number
   /** The resolved (but not yet interpolated) section text. */
   text: string
 }
@@ -619,12 +615,11 @@ export class SystemPrompt extends Service {
     }
     const assembly: PromptAssembly = {
       sections: [...sectionByName.values()]
+        .sort((a, b) => a.order - b.order)
         .map(section => ({
           name: section.name,
-          order: section.order,
           text: typeof section.text === 'function' ? section.text(context) : section.text,
-        }))
-        .sort((a, b) => a.order - b.order),
+        })),
       tools: orderTools(collected, this.toolOrder, knownNames),
       variables,
     }
diff --git a/packages/core/system-prompt/tests/scoped.spec.ts b/packages/core/system-prompt/tests/scoped.spec.ts
index a452bb6797..aac3f79e88 100644
--- a/packages/core/system-prompt/tests/scoped.spec.ts
+++ b/packages/core/system-prompt/tests/scoped.spec.ts
@@ -139,7 +139,7 @@ describe('scoped assemble dispatch', () => {
     scope.ctx.on('system-prompt/assemble', async (_assembly: PromptAssembly, context, next: () => Promise<PromptAssembly>) => {
       shaped.push(context.scope)
       const result = await next()
-      result.sections.push({ name: 'listener:extra', order: 999, text: 'listener text' })
+      result.sections.push({ name: 'listener:extra', text: 'listener text' })
       return result
     })
 
diff --git a/packages/core/system-prompt/tests/system-prompt.spec.ts b/packages/core/system-prompt/tests/system-prompt.spec.ts
index c7436711fa..b084104d22 100644
--- a/packages/core/system-prompt/tests/system-prompt.spec.ts
+++ b/packages/core/system-prompt/tests/system-prompt.spec.ts
@@ -21,9 +21,9 @@ describe('SystemPrompt', () => {
       await ctx.plugin(SystemPrompt, { persona: 'You are DeepSeek Harness SDK.' })
 
       const assembly = await ctx.systemPrompt.assemble()
-      expect(assembly.sections.map(s => [s.name, s.order])).toEqual([
-        ['harness:identity', -100],
-        ['deployment:persona', 0],
+      expect(assembly.sections.map(s => s.name)).toEqual([
+        'harness:identity',
+        'deployment:persona',
       ])
       expect(renderPrompt(assembly)).toBe(`${IDENTITY}\n\nYou are DeepSeek Harness SDK.`)
       // The names are reserved by the plugin — one owner per section.
@@ -183,7 +183,7 @@ describe('SystemPrompt', () => {
     const contexts: AssembleContext[] = []
     ctx.on('system-prompt/assemble', async (assembly: PromptAssembly, context, next) => {
       contexts.push(context)
-      assembly.sections.push({ name: 'from-a', order: 100, text: 'a' })
+      assembly.sections.push({ name: 'from-a', text: 'a' })
       return next()
     })
     // Listener B (registered later, runs after A) sees A's contribution.
@@ -235,8 +235,8 @@ describe('SystemPrompt', () => {
   it('filters out empty section text from renderPrompt', () => {
     const result = renderPrompt({
       sections: [
-        { name: 'empty', order: 0, text: '' },
-        { name: 'real', order: 1, text: 'content' },
+        { name: 'empty', text: '' },
+        { name: 'real', text: 'content' },
       ],
       tools: [],
       variables: {},
@@ -356,13 +356,13 @@ describe('SystemPrompt', () => {
     })
 
     it('names "(none)" when no variables are registered at all', () => {
-      expect(() => renderPrompt({ sections: [{ name: 's', order: 0, text: '{{x}}' }], tools: [], variables: {} }))
+      expect(() => renderPrompt({ sections: [{ name: 's', text: '{{x}}' }], tools: [], variables: {} }))
         .toThrow('unknown prompt variable "{{x}}" in section "s"; registered variables: (none)')
     })
 
     it('throws when a referenced variable has no value for this assembly', () => {
       expect(() => renderPrompt({
-        sections: [{ name: 'persona', order: 0, text: 'in {{cwd}}' }],
+        sections: [{ name: 'persona', text: 'in {{cwd}}' }],
         tools: [],
         variables: { cwd: undefined },
       })).toThrow('prompt variable "{{cwd}}" has no value for this assembly (section "persona")')
@@ -370,7 +370,7 @@ describe('SystemPrompt', () => {
 
     it('throws on a malformed complete reference, e.g. inner spaces', () => {
       expect(() => renderPrompt({
-        sections: [{ name: 's', order: 0, text: 'on {{ model }}' }],
+        sections: [{ name: 's', text: 'on {{ model }}' }],
         tools: [],
         variables: { model: 'm' },
       })).toThrow('malformed prompt variable reference "{{ model }}" in section "s"')
@@ -378,7 +378,7 @@ describe('SystemPrompt', () => {
 
     it('leaves a lone {{ verbatim only when NO }} follows anywhere after it', () => {
       const text = renderPrompt({
-        sections: [{ name: 's', order: 0, text: 'shell ${X:-{{fallback} stays' }],
+        sections: [{ name: 's', text: 'shell ${X:-{{fallback} stays' }],
         tools: [],
         variables: {},
       })
@@ -390,7 +390,7 @@ describe('SystemPrompt', () => {
       { text: 'x {{a{b}} y {{model}}', label: 'nested brace inside a would-be group' },
     ])('throws on a mangled reference with a }} still following ($label)', ({ text }) => {
       expect(() => renderPrompt({
-        sections: [{ name: 's', order: 0, text }],
+        sections: [{ name: 's', text }],
         tools: [],
         variables: { model: 'm' },
       })).toThrow('malformed prompt variable reference at')
@@ -400,7 +400,7 @@ describe('SystemPrompt', () => {
       // `in` would find Object.prototype.constructor and splice function
       // source into the prompt; Object.hasOwn must reject it instead.
       expect(() => renderPrompt({
-        sections: [{ name: 's', order: 0, text: 'on {{constructor}}' }],
+        sections: [{ name: 's', text: 'on {{constructor}}' }],
         tools: [],
         variables: { model: 'm' },
       })).toThrow('unknown prompt variable "{{constructor}}"')
@@ -416,7 +416,7 @@ describe('SystemPrompt', () => {
 
     it('never re-scans substituted values (a value containing {{sneaky}} stays literal)', () => {
       const text = renderPrompt({
-        sections: [{ name: 's', order: 0, text: 'v = {{model}}!' }],
+        sections: [{ name: 's', text: 'v = {{model}}!' }],
         tools: [],
         variables: { model: 'literal {{sneaky}} inside' },
       })