Merge origin/master at f1402327fa

This commit is contained in:
Tianyi Cui
2026-08-07 23:57:23 +08:00
447 changed files with 20295 additions and 1680 deletions

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# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-23-session-telemetry-otel-revival.md
2026-07-23-session-telemetry-otel-revival.md: a58598d8a956d47cb0cf6aa3e659f38314bc4b17
2026-07-23-session-telemetry-otel-revival.zh.md: 0deb0b81ce262db4fa4ae26076cd59756d628d20
2026-07-23-session-telemetry-otel-revival.md: f83128e8bf62e0718e59912c16c4e449855aaa1a
2026-07-23-session-telemetry-otel-revival.zh.md: bef3bd9cbc22f363b92880864651dcaa782fc1de

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@@ -12,9 +12,9 @@ Every deployment that wants harness sessions in an observability stack must hand
`packages/telemetry/` revives the two reviewed packages under the SDK stance — the harness provides the capability, the deployment configures where records go and owns what leaves in them:
- **`@deepseek-ai/dsh-session-telemetry`** — the seam. `TelemetryBackend` (`emit`/`flush?`/`shutdown`), the service-registered `Telemetry` form, and `TelemetryCoordinator` owning capture: adoption with cursor read-back, the per-append firehose (project → `structuredClone` → redact → `emit`, zero I/O), the fixed first-chunk-per-(turn, step) projection, the `agent/error` relay, and dispose-time `shutdown` records.
- **`@deepseek-ai/dsh-session-telemetry`** — the seam. `TelemetryBackend` (`emit`/`flush?`/`shutdown`), the service-registered `Telemetry` form, and `TelemetryCoordinator` owning capture: live adoption with cursor read-back and the per-append firehose (project → `structuredClone` → redact → `emit`, zero I/O), buffer-free on-demand replay from the canonical log, the fixed first-chunk-per-(turn, step) projection, the live `agent/error` relay, and live dispose-time `shutdown` records.
- **The `telemetry/record` waterfall** — the delta over the branch version and the seam's redaction extension point. Every record passes it before reaching any backend; the seam ships NO rules of its own — the innermost `next()` is a pass-through, deployments mount their rules as listeners (stacking by transforming `next()`'s return value), and a throwing rule withholds the record fail-closed. Redaction applies to the exported copy only; the canonical log is never rewritten.
- **`@deepseek-ai/dsh-session-telemetry-otel`** — the reference backend: OTel JS SDK log pipeline (`LoggerProvider` → `BatchLogRecordProcessor` → OTLP/HTTP exporter), configured verbatim through `exporter`/`processor` passthroughs. `exporter.url` is required and validated at load; unmounted or unconfigured, nothing leaves the process.
- **`@deepseek-ai/dsh-session-telemetry-otel`** — the reference backend: OTel JS SDK log pipeline (`LoggerProvider` → `BatchLogRecordProcessor` → OTLP/HTTP exporter), configured verbatim through `exporter`/`processor` passthroughs. Its default `FULL` mode requires `exporter.url`; the later [feedback-gated telemetry decision](2026-08-05-feedback-gated-session-telemetry.md) adds `FEEDBACK_ONLY` and `DISABLED` delivery modes without moving the redaction or backend boundary, while [buffer-free feedback replay](../simplification/2026-08-06-buffer-free-feedback-telemetry.md) avoids a second in-memory copy of the session prefix.
The boundary axiom holds: the harness's aspect ends at `emit()`. Batching, retry, queueing, and loss policy are the reporting SDK's, configured through passthroughs — delivery is best-effort (at-most-once across a crash), which the READMEs state plainly.
@@ -34,4 +34,4 @@ The boundary axiom holds: the harness's aspect ends at `emit()`. Batching, retry
## Consequences
A deployment adds one `cordis.yml` entry with an OTLP endpoint and gets its session stream in any OTel-compatible stack; removing the entry is the opt-out, with no residual state. A rule-free deployment exports records exactly as captured — including any credentials embedded in file contents or command output — so a deployment crossing a trust boundary must mount `telemetry/record` listeners, and both READMEs state this plainly. Where rules are mounted, exported bodies can differ from canonical log bytes, so receivers must not treat telemetry as a byte-exact replica; the log remains the source of truth. Crash durability is explicitly out of scope until the outbox decision above is revisited.
A deployment adds one `cordis.yml` entry with an OTLP endpoint and gets its session stream in any OTel-compatible stack. `FULL` preserves that behavior by default, `FEEDBACK_ONLY` replays a canonical-log prefix when feedback is recorded, and `DISABLED` constructs no reporting pipeline; removing the entry remains a silent opt-out, while the disabled mode keeps the local feedback warning. A rule-free deployment exports records exactly as captured — including any credentials embedded in file contents or command output — so a deployment crossing a trust boundary must mount `telemetry/record` listeners, and both READMEs state this plainly. Where rules are mounted, exported bodies can differ from canonical log bytes, so receivers must not treat telemetry as a byte-exact replica; the log remains the source of truth. Crash durability is explicitly out of scope until the outbox decision above is revisited.

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`packages/telemetry/` 以 SDK 立场复活这两个经过评审的包——harness 提供能力,部署方配置上报去向并对导出内容负责:
- **`@deepseek-ai/dsh-session-telemetry`** —— seam 本体。`TelemetryBackend`(`emit`/`flush?`/`shutdown`)、服务注册形态的 `Telemetry`、以及拥有捕获侧的 `TelemetryCoordinator`:带游标回读的接管、逐 append 的 firehose(投影 → `structuredClone` → 脱敏 → `emit`,零 I/O)、固定的每个(轮次、步骤)组合的首分片投影、`agent/error` 转发、以及 dispose(资源释放)时的 `shutdown` 记录。
- **`@deepseek-ai/dsh-session-telemetry`** —— seam 本体。`TelemetryBackend`(`emit`/`flush?`/`shutdown`)、服务注册形态的 `Telemetry`、以及拥有捕获侧的 `TelemetryCoordinator`:带游标回读的实时收养与逐 append 的 firehose(投影 → `structuredClone` → 脱敏 → `emit`,零 I/O)、从权威日志进行的无缓冲按需回放、固定的每个(轮次、步骤)组合首分片投影、实时 `agent/error` 转发,以及实时 dispose(资源释放)时的 `shutdown` 记录。
- **`telemetry/record` waterfall(瀑布式事件)** —— 相对分支版本的增量,也是该 seam 的脱敏扩展点。每条记录抵达任何后端前必经此处;seam 自身不带任何规则——最内层 `next()` 原样透传,部署方以监听器挂载自己的规则(通过变换 `next()` 的返回值堆叠),抛异常的规则将该记录 fail-closed 扣下。脱敏只作用于导出副本;canonical log 永不改写。
- **`@deepseek-ai/dsh-session-telemetry-otel`** —— 参考后端:OTel JS SDK 日志流水线(`LoggerProvider` → `BatchLogRecordProcessor` → OTLP/HTTP exporter),经 `exporter`/`processor` passthrough 原样配置。`exporter.url` 必填且加载时校验;未挂载或未配置时,任何数据都不会离开进程。
- **`@deepseek-ai/dsh-session-telemetry-otel`** —— 参考后端:OTel JS SDK 日志流水线(`LoggerProvider` → `BatchLogRecordProcessor` → OTLP/HTTP exporter),经 `exporter`/`processor` passthrough 原样配置。其默认 `FULL` 模式要求 `exporter.url`;后续的[反馈门控遥测决策](2026-08-05-feedback-gated-session-telemetry.md)增加了 `FEEDBACK_ONLY` 与 `DISABLED` 投递模式,但未移动脱敏或后端边界,而[无缓冲反馈回放](../simplification/2026-08-06-buffer-free-feedback-telemetry.md)避免在内存中创建会话前缀的第二份副本。
边界公理保持不变:harness 的职责止于 `emit()`。批处理、重试、排队与丢失策略属于 reporting SDK,经 passthrough 配置——投递是尽力而为(崩溃时至多一次),两份 README 对此如实陈述。
@@ -34,4 +34,4 @@ Status: implemented
## 后果
部署方在 `cordis.yml` 加一个带 OTLP endpoint 的 Cordis 配置项即可把会话流接入任何 OTel 兼容体系;删除该配置项即退出,无残留状态。未挂载规则的部署导出的记录与捕获时完全一致——包括文件内容与命令输出中内嵌的任何凭据——因此跨信任边界的部署必须挂载 `telemetry/record` 监听器,两个 README 对此如实陈述。挂载规则后,导出的 body 可能与 canonical log 字节不同,接收端不得把遥测当作字节精确副本;日志仍是真源。崩溃持久性在上述 outbox 决定重新审议前明确不在范围内。
部署方在 `cordis.yml` 加一个带 OTLP endpoint 的 Cordis 配置项即可把会话流接入任何 OTel 兼容体系。`FULL` 默认保留该行为,`FEEDBACK_ONLY` 在记录反馈时回放权威日志前缀,`DISABLED` 则不构造上报流水线;删除该配置项仍是静默退出方式,而禁用模式会保留本地反馈警告。未挂载规则的部署导出的记录与捕获时完全一致,包括文件内容与命令输出中内嵌的任何凭据。因此,跨信任边界的部署必须挂载 `telemetry/record` 监听器,两个 README 对此如实陈述。挂载规则后,导出的 body 可能与 canonical log 字节不同,接收端不得把遥测当作字节精确副本;日志仍是真源。崩溃持久性在上述 outbox 决定重新审议前明确不在范围内。

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# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-28-feedback-command.md
2026-07-28-feedback-command.md: 770c72954d66c9e26e03c47f99c261626e6ed09b
2026-07-28-feedback-command.zh.md: c8bd57ddb5e94bfb826ec40b771547ca9625c8e3

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# Agent Note: `/feedback` command
Status: implemented
English | [中文](2026-07-28-feedback-command.zh.md)
## Problem
A user who notices something wrong mid-session has nowhere to put that observation. Telling the model wastes a turn, changes the conversation the user was having, and buries the remark in derived history where no later reader can find it. Writing it outside the session loses the context that makes it meaningful — which session, at which point, against which work.
The capture surface has to be usable at the moment of annoyance, which rules out anything requiring the user to leave the interactive client, and it must not perturb the run in progress: no model tokens, no turn of work, no change to the request the user is waiting on.
## Decision
`@deepseek-ai/dsh-command-feedback` in `packages/feedback/command-feedback/` registers one global `feedback` command over `ctx.commands`. `/feedback <text>` acknowledges; bare or whitespace-only input returns a direct usage error. The handler is synchronous, injects only `commands`, and has no configuration.
The package declares the log-only `feedback/record { text }` session event and exports `recordFeedback(session, text)` as its command-independent producer. The producer discards surrounding whitespace, rejects an empty result, and appends exactly one event. `/feedback` delegates to it, so another UI, hook, or host integration can record the same domain fact without constructing a slash command.
`dsh-commands` still writes its `command/run` / `command/done` lifecycle pair around `/feedback`, but this command sets `recordInput: false`. Its `command/run` therefore carries the command identity and source without `args`; the feedback text exists only in `feedback/record`, while `command/done` carries the acknowledgement outcome. All three records are log-only and non-surface. Their appends start persistence's ordinary eager drain; nothing forces a flush, so acknowledgement reports that the feedback is in the log rather than already on disk.
Capture remains inert for the running agent and model. The optional OTel telemetry package later adds one infrastructure consumer: it observes `feedback/record` as a release trigger in `FEEDBACK_ONLY` mode and as the local-only warning trigger in `DISABLED` mode, without changing the feedback event or command path. See [Feedback-gated session telemetry](2026-08-05-feedback-gated-session-telemetry.md).
### Why feedback owns an event
Feedback is a domain fact, while `/feedback` is one trigger. Keeping the only payload in `feedback/record` lets later triggers use the same event and lets consumers select feedback without depending on command names or parsing command lifecycle records. Omitting `command/run.args` for this definition avoids two authoritative-looking copies of one human remark.
### Why the model never sees it
Feedback is about the session, not input to it. Injecting it as a user message would change the next model request, contradicting the requirement that recording not perturb the run, and would make the remark part of the conversation it comments on. `command/run` and `command/done` are absent from `SurfaceEventType`, so they cannot acquire a `surfaceOp` or enter derived history even by mistake.
### Verbatim text
Surrounding whitespace is discarded, but nothing else is parsed. `/feedback /plan felt slow` records `/plan felt slow`; the leading `/plan` is content, not a nested command. Control-word grammar of the kind `/goal` uses would make the corresponding literal feedback impossible to express, which is the opposite of what a capture surface is for.
### A new group
`packages/feedback/` is a new group because no existing one owns this. `goal/` is objective state, `session-title/` is titles, `core/` is the product spine. The group holds one producer package; cross-cutting consumers stay in their owning groups rather than forcing this one to grow.
## Alternatives considered
**Use `command/run` as the feedback record.** Rejected because feedback would then be coupled to one trigger and consumers would have to identify a domain fact by command name. A non-command producer could not create the same record without pretending to execute a command.
**Store the text in both `feedback/record` and `command/run.args`.** Rejected because one act would have two payload copies with no useful distinction. `recordInput: false` preserves the generic lifecycle while leaving the domain event authoritative.
**Inject feedback as a user message via `agent.inject()`.** Needs no new event type and reuses the path `/goal` mutations take. Rejected: it makes the feedback model-visible, so it enters the next request, changes the run being commented on, and consumes tokens — contradicting all three parts of the no-perturbation requirement.
**Make `/feedback` a true no-op that records nothing.** The most literal reading of "does not do anything". Rejected because it makes the command pointless: the stated requirement was that the remark reach the session log.
**Register the command inside an existing package** such as `packages/ui/commands`. Avoids a new group and its README pair. Rejected: `ctx.commands` is the registry, not a home for arbitrary command implementations, and the requester asked for a standalone package.
**Parse structure out of the text** (category prefixes, severity markers). Rejected as speculative: no consumer needs that structure, and any control-word grammar makes the corresponding literal feedback unrecordable. Verbatim text is the widest surface a future consumer can narrow; a parsed one cannot be widened after the fact.
**Add a model-facing tool instead of a slash command.** Rejected: feedback is a direct human observation. Routing it through the model spends a turn, lets the model paraphrase the user's words, and makes the record contingent on the model choosing to call the tool.
## Consequences
The shipped `dsh` base mounts the command unconditionally — no configuration, no dependency on the goal stack. The Web client exposes it through its command adapter. Headless mode, ACP, and JSON-RPC do not provide a command adapter, so `/feedback` is unavailable there.
The package owns one independent append-only event with no cross-event or mutable-data relation for an invariant companion to check. The event follows the session log's existing replay, fork, persistence, and crash-tail behavior.
Deferred: no product or model consumer; no structured fields; no amend or withdraw, since the log is append-only and this package adds no tombstone; and no explicit durability barrier, so an entry recorded immediately before a crash can be lost with any other unflushed tail. The optional telemetry consumer treats the event only as an export-policy trigger.
No keyless transcript snapshot accompanies this change, at the requester's explicit direction. Package tests, a real Loader composition test over a `cordis.yml`, and the shipped Web composition test cover registration, capture, model exclusion, and product assembly.

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# Agent Note: `/feedback` 命令
Status: implemented
[English](2026-07-28-feedback-command.md) | 中文
## 问题
用户在会话中途发现问题时,没有地方记下这个观察。告诉模型会浪费一个轮次、改变用户原本进行的对话,并把这条评论埋进派生历史,使后续读者无法找到它。写到会话之外则会丢失让它有意义的上下文:属于哪个会话、处于哪个时点、针对哪项工作。
采集接口必须能在用户产生不满的那一刻使用,因此任何需要用户离开交互式客户端的方案都不可行;它还不能扰动正在进行的运行:不消耗模型 token、不产生工作轮次、不改变用户正在等待的请求。
## 决策
位于 `packages/feedback/command-feedback/` 的 `@deepseek-ai/dsh-command-feedback` 通过 `ctx.commands` 注册一个全局 `feedback` 命令。`/feedback <text>` 给出确认;空输入或仅含空白的输入返回直接用法错误。处理器是同步的,只注入 `commands`,且没有任何配置。
本包(package)声明仅写入日志的 `feedback/record { text }` 会话事件,并导出 `recordFeedback(session, text)`,作为不依赖命令的生产方。该生产方丢弃前后空白,拒绝空结果,并且恰好追加一个事件。`/feedback` 委托给它,因此其他 UI、钩子或 host 集成无需构造斜杠命令也能记录同一个领域事实。
`dsh-commands` 仍会围绕 `/feedback` 写入 `command/run` / `command/done` 生命周期配对,但该命令设置了 `recordInput: false`。因此,它的 `command/run` 携带命令标识与来源,但不携带 `args`;反馈文本只存在于 `feedback/record` 中,而 `command/done` 携带确认结果。三个记录都仅写入日志且非 surface。它们的追加会启动持久化的常规即时排空;没有任何环节强制 flush,因此确认文本报告的是反馈已进入日志,而非已经落盘。
采集对正在运行的 agent 与模型仍不产生后续动作。可选的 OTel 遥测包后续增加了一个基础设施消费方:它在 `FEEDBACK_ONLY` 模式下将 `feedback/record` 作为释放触发器,在 `DISABLED` 模式下将其作为本地警告触发器,且不改变反馈事件或命令路径。见[反馈门控的会话遥测](2026-08-05-feedback-gated-session-telemetry.md)。
### 为何反馈拥有自己的事件
反馈是领域事实,而 `/feedback` 是一种触发方式。只把载荷保存在 `feedback/record` 中,既让后续触发方式可以使用同一个事件,也让消费方无需依赖命令名或解析命令生命周期记录即可筛选反馈。在该定义中省略 `command/run.args`,可避免同一条人类评价出现两个看起来都具有权威性的副本。
### 为何模型永不看到它
反馈是关于会话的,而不是会话的输入。将其作为 user 消息注入会改变下一次模型请求,与「记录不得扰动运行」的要求相冲突,也会让该评论成为它所评论的那段对话的一部分。`command/run` 与 `command/done` 不属于 `SurfaceEventType`,因此即便出错也无法获得 `surfaceOp` 或进入派生历史。
### 原样文本
前后空白会被丢弃,但除此之外不做解析。`/feedback /plan felt slow` 记录 `/plan felt slow`;开头的 `/plan` 是内容,而非嵌套命令。若采用 `/goal` 那样的控制词语法,对应的字面反馈将无法表达,这与采集接口的目的正好相反。
### 一个新的分组
`packages/feedback/` 是新分组,因为现有分组都不拥有此职责:`goal/` 负责目标状态,`session-title/` 负责标题,`core/` 是产品主干。该分组只包含一个生产方包;跨领域的消费方留在各自所属的分组,而不是迫使这个包不断膨胀。
## 考虑过的替代方案
**使用 `command/run` 作为反馈记录。** 已否决,因为这会将反馈与一种触发方式耦合,消费方还必须通过命令名识别领域事实。非命令生产方若不伪装成执行命令,就无法创建相同记录。
**同时在 `feedback/record` 与 `command/run.args` 中存储文本。** 已否决,因为同一行为会产生两个没有实质区别的载荷副本。`recordInput: false` 保留通用生命周期,同时让领域事件保持权威性。
**通过 `agent.inject()` 将反馈作为 user 消息注入。** 无需新增事件类型,并复用 `/goal` 变更所走的路径。已否决:它会让反馈对模型可见,从而进入下一次请求、改变正被评论的那次运行并消耗 token——与「不得扰动」要求的三个方面全部冲突。
**让 `/feedback` 成为真正的空操作,什么都不记录。** 这是对「什么都不做」最字面的理解。已否决:这会使命令失去意义——明确的要求是让这条评论进入会话日志。
**在现有包中注册该命令**,例如 `packages/ui/commands`。可省去新分组及其双语 README。已否决:`ctx.commands` 是注册表,而不是任意命令实现的归属地;且请求者明确要求独立的包。
**从文本中解析结构**(类别前缀、严重程度标记)。已否决,属于投机设计:没有消费方需要该结构,而任何控制词语法都会让对应的字面反馈无法记录。原样文本是未来消费方可以收窄的最宽接口;而已被解析的接口无法事后放宽。
**改为提供面向模型的工具。** 已否决:反馈是人类的直接观察。经由模型会消耗一个轮次、让模型改写用户的原话,并使记录取决于模型是否选择调用该工具。
## 后果
随附的 `dsh` 基础组合无条件挂载该命令:没有配置,也不依赖 goal 栈。Web 客户端通过命令适配器暴露该命令。无头模式、ACP 和 JSON-RPC 不提供命令适配器,因此 `/feedback` 在那里不可用。
本包拥有一个独立的仅追加事件,不存在跨事件关系或可变数据关系可供不变式伴生插件检查。该事件遵循会话日志现有的回放、fork、持久化和崩溃尾部行为。
延期事项:没有产品或模型消费方;没有结构化字段;不支持修改或撤回,因为日志仅追加且本包不新增 tombstone;且没有显式持久化屏障,因此紧临崩溃前记录的条目可能与其他未 flush 的尾部一同丢失。可选的遥测消费方只将该事件作为导出策略触发器。
本次变更按请求者的明确指示不附带无密钥 transcript(文本记录)快照。包测试、基于真实 `cordis.yml` 的 Loader 组合测试,以及随附的 Web 组合测试覆盖注册、采集、模型排除和产品组装。

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# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-28-tool-call-file-open-in-os.md
2026-07-28-tool-call-file-open-in-os.md: 73f5091888ab2506eab50b827e74c5120394b127
2026-07-28-tool-call-file-open-in-os.zh.md: c1bc93c472aae8be8cee3bab6cd02f556abca494
2026-07-28-tool-call-file-open-in-os.md: 499d3caa11e1f2c17d96e43b7846df72a31c0eb1
2026-07-28-tool-call-file-open-in-os.zh.md: a658a7b55d2575ad1a5d8baccb80f0a8444d6db9

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@@ -10,9 +10,9 @@ Chat tool rows treated the whole summary line as a click target that opened the
## Decision
File-tool path summaries (`read` / `write` / `edit` args carrying `path` or `file_path`) render as hover-underline links with a pointer cursor. Clicking the path calls `host.openPath` through `WorkspacesService.openPath`, resolving relative paths against the session cwd. File-link rows disable args expand (leading icon is inert); whole-row click, row hover fill, and the click-to-open-details gesture are removed from tool rows (including bash and todo registrations). The details panel and its inject surface remain for programmatic selection; rows no longer drive them.
File-tool path summaries (`read` / `write` / `edit` args carrying `path` or `file_path`) render as links underlined at rest with a pointer cursor. Clicking the path calls `host.openPath` through `WorkspacesService.openPath`, resolving relative paths against the session cwd. File-link rows disable args expand (leading icon is inert); whole-row click, row hover fill, and the click-to-open-details gesture are removed from tool rows (including bash and todo registrations). The details panel and its inject surface remain for programmatic selection; rows no longer drive them.
`host.openPath` is a privileged unary RPC accepted only from loopback, same-origin browser requests (same carrier guard as `host.pickDirectory`). Platform adapters open without a shell: `open` on macOS, PowerShell `Invoke-Item` on Windows, and `xdg-open` on desktop Linux. WSL is a separate host shape despite Node reporting `linux`: the adapter recognizes its environment or Microsoft kernel release, translates the Linux path with `wslpath -w`, and passes the resulting Windows/UNC path to the same PowerShell handoff. The opener's platform facts and command runner are injectable for tests. URL-only read args (`web_fetch`) are not file links.
`host.openPath` is a privileged unary RPC accepted only from loopback, same-origin browser requests (same carrier guard as `host.pickDirectory`). Platform adapters open without a shell: `open` on macOS, PowerShell `Invoke-Item` on Windows, and `xdg-open` on desktop Linux; browser-renderable documents prefer the named default browser on macOS and desktop Linux. WSL is a separate host shape despite Node reporting `linux`: the adapter recognizes its environment or Microsoft kernel release, translates the Linux path with `wslpath -w`, and passes the resulting Windows/UNC path to the same PowerShell handoff. The opener's platform facts and command runner are injectable for tests. URL-only read args (`web_fetch`) are not file links.
## Alternatives considered

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## 决策
文件工具的路径摘要(`read`/`write`/`edit` 参数中的 `path` 或 `file_path`)渲染为悬停下划线链接并使用 pointer 光标。点击路径会经 `WorkspacesService.openPath` 调用 `host.openPath`,相对路径以会话 cwd 为基准解析。带文件链接的行关闭参数展开(左侧图标不可点);工具行(含 bash 与 todo 注册)去掉整行点击、整行悬停底色,以及点击打开 details 的手势。details 面板及其 inject 面仍保留供程序化选择;工具行不再驱动它们。
文件工具的路径摘要(`read`/`write`/`edit` 参数中的 `path` 或 `file_path`)渲染为静止状态下即带下划线的链接,并使用 pointer 光标。点击路径会经 `WorkspacesService.openPath` 调用 `host.openPath`,相对路径以会话 cwd 为基准解析。带文件链接的行关闭参数展开(左侧图标不可点);工具行(含 bash 与 todo 注册)去掉整行点击、整行悬停底色,以及点击打开 details 的手势。details 面板及其 inject 面仍保留供程序化选择;工具行不再驱动它们。
`host.openPath` 是特权一元 RPC,仅接受来自回环地址且同源的浏览器请求(与 `host.pickDirectory` 相同的载体守卫)。平台适配器不经 shell 打开:macOS 为 `open`,Windows 为 PowerShell `Invoke-Item`,桌面 Linux 为 `xdg-open`。尽管 Node 将 WSL 报告为 `linux`,WSL 仍是一种独立的宿主形态:适配器根据其环境或 Microsoft 内核 release 识别它,用 `wslpath -w` 转换 Linux 路径,并将所得 Windows/UNC 路径交给同一 PowerShell 交接。打开器的平台信息和命令运行器可在测试中注入。仅含 URL 的 read 参数(`web_fetch`)不是文件链接。
`host.openPath` 是特权一元 RPC,仅接受来自回环地址且同源的浏览器请求(与 `host.pickDirectory` 相同的载体守卫)。平台适配器不经 shell 打开:macOS 为 `open`,Windows 为 PowerShell `Invoke-Item`,桌面 Linux 为 `xdg-open`;浏览器可渲染的文档会在 macOS 与桌面 Linux 上优先使用能够确定的默认浏览器。尽管 Node 将 WSL 报告为 `linux`,WSL 仍是一种独立的宿主形态:适配器根据其环境或 Microsoft 内核 release 识别它,用 `wslpath -w` 转换 Linux 路径,并将所得 Windows/UNC 路径交给同一 PowerShell 交接。打开器的平台信息和命令运行器可在测试中注入。仅含 URL 的 read 参数(`web_fetch`)不是文件链接。
## 考虑过的替代方案

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# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-07-31-web-workspace-file-links.md
2026-07-31-web-workspace-file-links.md: fe71a2d8caa4dc9cc732a250d7e388d1a3b44182
2026-07-31-web-workspace-file-links.zh.md: 0f8c87822087169aad9ac4283f706fd8a8748be9

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# Agent Note: opening a produced file from the web UI
Status: implemented
English | [中文](2026-07-31-web-workspace-file-links.zh.md)
> Scope: the produced-files row a finished turn ends with, the file-path link that reads as one, and the Host opener preferring the default browser for documents a browser renders. Not in scope, by decision: serving workspace files over HTTP, and previews for a client that is not on the Host machine.
## Problem
A web session that produced a file had no way to look at it. The agent wrote `deepseek-homepage.html`, said so, and the user's only recourse was to copy an absolute path like `/private/tmp/dsh-client-hotplug.ygPvsm/workspaces/plugin-hotplug/deepseek-homepage.html` into a terminal.
Two distinct defects sat behind that. The transcript never said what a turn had produced: `ToolCallView.locations` — the follow-along vocabulary the file tools already populate — had no consumer in the client, so a reader's only account of the output was whatever the closing message happened to spell. And the affordance that did exist was invisible: `ToolRow` already renders a mutation or read row's path as a real button wired to `host.openPath`, but styled exactly like the surrounding prose and underlined only on hover, so nobody found it. The reported "I can't open what it made" was a discoverability failure sitting on top of a working capability.
## Decision
**A finished turn ends with the files it produced.** The row is its own plugin, `@deepseek-ai/dsh-client-ui-deliverables`, registered into the `conversation.chat.turnTail` hole the chat view renders between a closing message's body and its IconActions — ui-conversation owns the hole and the owner currency (nodes, closing seq, `openFile`), the plugin owns every policy. `producedForClosing` reads the paths off the mutation tools' own follow-along `locations` — a diff card, or a generic card whose `kind` is `edit` (the shape `str_replace_editor`'s insert presents) — so a turn's output is listed whether or not the closing message named it, and a new mutation tool joins by declaring what it does rather than by being added to a list. Reads, deletes, and failed calls contribute nothing; a path appears once per turn in first-seen order; accumulation resets on the turn boundary, so a turn that mutates and then ends without content text cannot spill into the next turn's row. One cordis.yml line composes the surface in or out; the unregistered hole renders nothing.
**The path link reads as a link.** Underlined at rest, not only on hover. This is the smaller half of the diff and the larger half of the fix.
**Opening stays the Host's job, and prefers the default browser.** `host.openPath` hands the path to the operating system, which yields a `file://` document in a real browser: full page capabilities, and no reachability into `/api`, because a `file://` document is not same-origin with it. Measured on the reported artifact: `localStorage` works, the theme toggle flips, the tabs switch, and `fetch` to the API fails. For documents a browser renders — `.html`, `.htm`, `.xhtml`, `.svg` — the opener resolves the default *browser* rather than the type's default application when the platform can name one, because a developer who binds `.html` to an editor would otherwise click a produced page and get source code. macOS reads the LaunchServices `https` handler and desktop Linux reads `$BROWSER`; either falls back to the default application when no browser can be named. Windows uses its registered association, and WSL first translates the path before using that same Windows handoff.
**Serving workspace files over HTTP is out of scope, and so are non-local clients.** An earlier revision served files from the harness itself — first same-origin with `/api`, then behind `CSP: sandbox`, then from a second listener whose own port gave served documents their own origin. Each step answered a real problem, and the whole line was retired once the product scope was settled: previews for a browser that is not on the Host machine are not supported. With that decided, the Host opener answers the supported case completely and the HTTP machinery answered only the unsupported one.
## Alternatives considered
- **Serving `/f/<sessionId>/<segments…>` from the harness** — built and working, including confinement by dual `realpath`, the browser-trust fence, streamed reads, and a separate listener whose port gave served documents their own origin. It is the only design that shows a preview to a client on another machine, which is exactly the case ruled out of scope. Retired for that reason, not because it failed; its cost was a second socket with its own lifecycle, a port published into the page, and a URL-shape contract shared across two packages.
- **Same-origin HTTP serving without isolation** — measurably unsafe, and recorded so nobody retries it: a document served beside `/api` drove `settings.describe` to a `200` with full data and `session.list` to 35 KB of every session's transcript, from a page that need not be agent-authored at all (a read row makes every file in a cloned repository openable).
- **`Content-Security-Policy: sandbox` over that same-origin serving** — closes the hole by taking the document's origin away, which measurably breaks the pages this feature exists to show: the reported artifact throws `SecurityError` on load, and because an uncaught exception aborts the rest of its `<script>`, every listener declared after that line — theme toggle, mobile menu, model tabs — never binds. Two of the four artifacts in the reporting user's workspace were dead pages under it, and they still rendered perfectly, so the breakage was invisible.
- **Linkifying paths in the assistant's closing message** — the shape a user asks for ("put the link at the end"), but it makes rendering depend on the model spelling a path recognizably. The tool calls already carry `locations` as structured fact, so the produced-files row consumes that instead.
- **An embedded WebView in the desktop shell** — the strongest isolation available, since the preview then runs in a container the product owns rather than in the user's browser. It belongs to the desktop shell's own design, not to this surface, and is recorded here as the direction a future preview capability should take.
## Consequences
Every existing file affordance changed at once: write, edit, read, and the generic single-file card all reach `openFile`, so the link fix and the browser preference apply to all of them without a per-row change. The keyless web lane (`apps/web/tests/produced-files.e2e.ts`) cold-seeds a recorded write turn and pins the row in the assembled application; it deliberately does not click, because the click hands a path to the Host's opener and would launch a real application on the machine running the suite. A produced file opens as a `file://` document, which cannot `fetch` its own siblings (a multi-file artifact that loads `./data.json` breaks, while `<script src>`, `<img>`, and CSS `@import` are unaffected) — the one capability HTTP serving had that this does not. A client reached over the network sees nothing when it clicks: `host.openPath` runs on the Host and is loopback-pinned by the `/api` trust fence. That is the scope decision showing through, not a defect, and it is why the row keeps the full path in its `title` for a reader who can only copy it. Markdown opens in whatever the platform hands `.md`, usually an editor rather than a renderer; rendering it inside the product is a separate, deferred surface.

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# Agent Note:从 web UI 打开产出的文件
Status: implemented
[English](2026-07-31-web-workspace-file-links.md) | 中文
> 范围:完成的一轮以其产出文件收尾的那一行、读得出是链接的文件路径链接,以及 Host 打开器对浏览器可渲染文档优先选用默认浏览器。经决定不在范围内:以 HTTP 提供工作区文件,以及为不在 Host 机器上的客户端提供预览。
## 问题
一个产出了文件的 web 会话,没有办法看到那个文件。agent 写出了 `deepseek-homepage.html` 并如实告知,而用户唯一的办法是把 `/private/tmp/dsh-client-hotplug.ygPvsm/workspaces/plugin-hotplug/deepseek-homepage.html` 这样的绝对路径复制进终端。
这背后是两个不同的缺陷。转录从不说明一轮产出了什么:`ToolCallView.locations`——文件工具早已填好的跟随文件词汇——在客户端没有任何消费方,因此读者对产出的唯一交代,就是收尾消息恰好拼出来的那点内容。而已经存在的那个交互是隐形的:`ToolRow` 早已把改写行或读取行的路径渲染成一个接到 `host.openPath` 的真按钮,但它的样式与周围正文一模一样、只有悬停才有下划线,于是没人发现。所报告的“做完了打不开”,是一个可发现性失败叠在一项本就可用的能力之上。
## 决定
**完成的一轮以它产出的文件收尾。** 该行是独立插件 `@deepseek-ai/dsh-client-ui-deliverables`,注册进 chat 视图在收尾消息正文与其 IconActions 之间渲染的 `conversation.chat.turnTail` 空位——ui-conversation 拥有空位与 owner 通货(节点、收尾 seq、`openFile`),插件拥有全部策略。`producedForClosing` 从改写工具自身的跟随文件 `locations` 中读出路径——diff 卡片,或 `kind` 为 `edit` 的 generic 卡片(即 `str_replace_editor` 的 insert 所呈现的形状)——因此无论收尾消息是否点名,这一轮的产出都会被列出;新的改写工具靠声明自己做了什么加入,而不是靠被加进某张名单。read、删除与失败的调用不贡献任何条目;同一路径在一轮内按首见顺序只出现一次;累积在 turn 边界重置,因此一轮若先改写文件、随后没有正文内容就结束,不会溢进下一轮的行里。cordis.yml 中的一行即可把该交互面组合进来或去掉;未注册的空位什么也不渲染。
**路径链接读得出是链接。** 静止状态下就带下划线,而不只在悬停时。这是本次改动中更小的那一半,却是修复中更大的那一半。
**打开仍然是 Host 的职责,并且优先选用默认浏览器。** `host.openPath` 把路径交给操作系统,得到的是真实浏览器里的一份 `file://` 文档:页面能力完整,且够不到 `/api`——因为 `file://` 文档与它并不同源。在所报告的那份产物上实测:`localStorage` 可用、主题切换生效、tabs 可切换,而对 API 的 `fetch` 失败。对浏览器能渲染的文档——`.html`、`.htm`、`.xhtml`、`.svg`——平台能够确定默认浏览器时,打开器解析的是默认**浏览器**而非该类型的默认应用,因为把 `.html` 绑给编辑器的开发者,否则点开一个产出的页面得到的会是源码。macOS 读取 LaunchServices 的 `https` 处理程序,桌面 Linux 读取 `$BROWSER`;无法确定浏览器时,两者都会回退到默认应用。Windows 使用其注册的文件关联,WSL 则先转换路径,再使用同一 Windows 交接。
**以 HTTP 提供工作区文件不在范围内,非本机客户端亦然。** 更早的一版由 harness 自己提供文件——先是与 `/api` 同源,随后加上 `CSP: sandbox`,再后来交给一个以自身端口给所服务文档独立源的第二监听器。每一步都在回答一个真实问题,而整条线在产品范围定下之后被整体退役:不为“浏览器不在 Host 机器上”的场景提供预览。这一点定下之后,Host 打开器完整回答了受支持的场景,而那套 HTTP 机制回答的只是不受支持的那个。
## 考虑过的替代方案
- **由 harness 提供 `/f/<sessionId>/<segments…>`**——已经实现并可用,包含双 `realpath` 收敛、浏览器信任 fence、流式读取,以及一个以自身端口给所服务文档独立源的监听器。它是唯一能把预览呈现给另一台机器上客户端的设计,而那恰恰是被判出范围的场景。因此退役,而不是因为它失败了;它的代价是一个带自身生命周期的第二 socket、一个注入页面的端口,以及一份跨两个包共享的 URL 形状契约。
- **同源 HTTP 提供且不加隔离**——经实测不安全,记录在此以免有人重试:与 `/api` 并排提供的文档把 `settings.describe` 打到 `200` 并拿到完整数据,把 `session.list` 打到 35 KB 的全部会话转录,而这个页面根本不必由 agent 撰写(一条 read 行就让 clone 下来的仓库里任何文件变得可打开)。
- **在那套同源提供之上加 `Content-Security-Policy: sandbox`**——它以剥夺文档的源来堵住这个洞,而这经实测会破坏本功能存在的意义所在的那类页面:所报告的产物在加载时抛 `SecurityError`,又因为未捕获异常会中止其 `<script>` 的其余部分,该行之后声明的所有监听器——主题切换、移动端菜单、模型 tabs——统统不会绑定。报告者工作区里四份产物有两份在它之下是死页面,而且它们渲染得完美无缺,所以这种破坏是看不见的。
- **把路径在助手的收尾消息里链接化**——这是用户开口要的形状(“在结尾附上链接”),但它让渲染取决于模型是否把路径拼写得可识别。工具调用已经把 `locations` 作为结构化事实携带,产出文件行消费的正是它。
- **桌面端外壳中的内嵌 WebView**——可得到的最强隔离,因为那时预览跑在产品自己拥有的容器里,而不是用户的浏览器里。它属于桌面端外壳自身的设计,而非本交互面,记录在此作为未来预览能力应走的方向。
## 影响
现有的每一处文件交互都同时改变了:write、edit、read 与通用单文件卡片都汇到 `openFile`,因此链接可见性修复与浏览器优先策略无需逐行改动即适用于全部。无密钥 web 通道(`apps/web/tests/produced-files.e2e.ts`)冷播种一段录制的 write 轮次,在组装后的应用中钉住该行;它刻意不点击,因为点击会把路径交给 Host 打开器,从而在跑测试的机器上启动一个真实应用。产出的文件以 `file://` 文档打开,它无法 `fetch` 自己的同级文件(一个加载 `./data.json` 的多文件产物会坏,而 `<script src>`、`<img>` 与 CSS `@import` 不受影响)——这是 HTTP 提供曾有、而此处没有的那一项能力。经网络访问的客户端点击后看不到任何东西:`host.openPath` 在 Host 上运行,且被 `/api` 信任 fence 钉在回环。那是范围决定的显现,不是缺陷,也正因如此该行把完整路径保留在 `title` 中,供只能复制它的读者使用。markdown 会由平台交给 `.md` 的默认处理程序打开,通常是编辑器而非渲染器;在产品内渲染它是另一个被推迟的交互面。

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# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-08-05-feedback-gated-session-telemetry.md
2026-08-05-feedback-gated-session-telemetry.md: 7d923a7e4cf61e8d1119187564b87e4cbb2065b7
2026-08-05-feedback-gated-session-telemetry.zh.md: 2862162c0c36e5194846c7e1c7bbc24230ce90aa

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# Agent Note: Feedback-gated session telemetry
Status: implemented
English | [中文](2026-08-05-feedback-gated-session-telemetry.zh.md)
## Problem
Session telemetry originally has one mounted behavior: every accepted record enters the reporting backend immediately. Deployments need two stricter policies without replacing the plugin: hold a session's telemetry unless its user records feedback, or disable reporting while still explaining what happens to feedback. The policy must preserve the existing full-export default and the telemetry seam's redaction-before-backend boundary.
## Decision
`@deepseek-ai/dsh-session-telemetry-otel` exposes the string-valued `TelemetryMode` enum to TypeScript callers and accepts the same three uppercase `mode` values in serialized configuration:
- `FULL` is the default and preserves immediate delivery to the configured OTel pipeline.
- `FEEDBACK_ONLY` reads the canonical session log when `feedback/record` is appended and hands over the unreleased prefix through that exact event. Records appended after that boundary remain local until another feedback event.
- `DISABLED` constructs no exporter, processor, or logger provider. A `feedback/record` listener prints that nothing is shared and the feedback remains local.
The generic telemetry coordinator owns `live` and `on-demand` capture. Live capture projects, clones, redacts, and hands each event to the backend on the session firehose. On-demand capture registers no continuous capture listeners; `captureSession(session, throughSeq)` reads the canonical log from the handoff cursor through an inclusive boundary, then projects, clones, redacts, and hands over that prefix. The cursor advances only for handed-over records. The [buffer-free replay decision](../simplification/2026-08-06-buffer-free-feedback-telemetry.md) owns why the on-demand path uses the canonical log instead of copied records.
Mode resolution is a closed, fail-before-setup check: an unknown direct-construction value fails before transport configuration is read. Only `FULL` exposes the public service's `emit()` path to the SDK pipeline. `FEEDBACK_ONLY` gives its on-demand coordinator a private backend capability; its listener passes an event to `captureSession()` only when the exact `feedback/record` object is already stored at `session.events[event.seq]`. `Session.append` commits that object before publishing `session/event`, so replay includes the feedback but cannot extend past its boundary. `DISABLED` creates neither the capability nor the SDK pipeline and does not inspect exporter configuration.
## Alternatives considered
**Open a session permanently after its first feedback.** Rejected because later work would be shared without another feedback act and the plugin would need additional open-session state. Releasing one pending prefix per feedback has the smaller state machine and the narrower sharing boundary.
**Retain capture-time redacted records until feedback.** Rejected because it duplicates an unbounded session prefix even though the canonical log already owns the events. It preserves capture-time redaction policy and operational records, but those properties do not justify the memory cost for a mode defined as uploading the session log after feedback.
**Temporarily allow public `emit()` calls during feedback replay.** Rejected because a redaction listener or another reentrant caller could enqueue an unrelated record while the flag was open. A private backend capability makes authorization structural and keeps the public service closed throughout replay.
**Use an unmounted plugin as the disabled state.** That remains the silent opt-out, but it cannot warn when feedback is recorded. The explicit disabled mode lets a deployment keep one configuration shape and communicate that the local feedback did not leave the process.
## Consequences
`FULL` remains source- and wire-compatible with the original default. `FEEDBACK_ONLY` adds no telemetry-owned per-event buffer before feedback; direct service calls and non-canonical feedback events upload nothing, and a crash before feedback uploads nothing from that prefix. Replay applies the redaction policy mounted when feedback is recorded and excludes operational records that do not exist in the canonical log. Feedback-only streams therefore carry neither `agent-error` nor `shutdown` records, and shutdown absence is not a crash signal. Each later feedback captures the suffix accumulated since the previous boundary. `DISABLED` can omit `exporter.url`, does no reporting work, and keeps feedback only in the canonical session log.

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# Agent Note:反馈门控的会话遥测
Status: implemented
[English](2026-08-05-feedback-gated-session-telemetry.md) | 中文
## 问题
会话遥测原本只有一种已挂载行为:每条已接受记录都立即进入上报后端。部署方需要两种更严格的策略,且不替换插件:只有用户记录反馈时才释放该会话的遥测,或禁用上报并仍向用户说明反馈的去向。该策略必须保留现有的全量导出默认值,以及遥测 seam 在记录抵达后端之前脱敏的边界。
## 决策
`@deepseek-ai/dsh-session-telemetry-otel` 向 TypeScript 调用方公开以字符串为值的 `TelemetryMode` 枚举,并在序列化配置中接受相同的三个大写 `mode` 值:
- `FULL` 是默认值,保留向已配置 OTel 流水线的即时投递。
- `FEEDBACK_ONLY` 在追加 `feedback/record` 时读取权威会话日志,并交接截至该事件的未释放前缀。该边界后追加的记录会留在本地,直到另一个反馈事件。
- `DISABLED` 不构造导出器、处理器或日志提供方。`feedback/record` 监听器会输出警告,说明什么都不会共享,且反馈仍留在本地。
通用遥测协调器拥有 `live` 与 `on-demand` 捕获。实时捕获在会话 firehose 上投影、深拷贝、脱敏每个事件,并将其交给后端。按需捕获不注册持续捕获监听器;`captureSession(session, throughSeq)` 从 handoff 游标起读取权威日志,直至含边界的指定序列号,然后投影、深拷贝、脱敏并交接该前缀。游标只为已交接记录推进。[无缓冲回放决策](../simplification/2026-08-06-buffer-free-feedback-telemetry.md)说明了按需路径为何使用权威日志而非记录副本。
模式解析采用封闭式检查,并在设置前失败:通过直接构造传入未知值时,会在读取传输配置前失败。只有 `FULL` 向 SDK 流水线开放公共服务的 `emit()` 路径。`FEEDBACK_ONLY` 向其按需协调器提供私有后端能力;其监听器向 `captureSession()` 传递事件的唯一条件,是该事件与那个 `feedback/record` 对象身份完全相同,且该对象已存储于 `session.events[event.seq]`。`Session.append` 在发布 `session/event` 前已提交该对象,因此回放包含该反馈,但不会越过其边界。`DISABLED` 既不创建该能力,也不创建 SDK 流水线,并且不检查导出器配置。
## 考虑过的替代方案
**会话在首次反馈后永久开放。** 已否决,因为后续工作会在用户未再次提交反馈的情况下被共享,而且插件需要额外的会话开放状态。每次反馈只释放一个待处理前缀,状态机更小,共享边界也更窄。
**反馈前保留捕获时已脱敏记录。** 已否决,因为权威日志已拥有这些事件,该方案仍会复制无上限的会话前缀。它能保留捕获时的脱敏策略与运维记录,但对于一个定义为「反馈后上传会话日志」的模式,这些性质不足以证明该内存成本合理。
**在反馈回放期间临时允许公开 `emit()` 调用。** 已否决,因为在标志开启期间,脱敏监听器或另一个可重入调用方可能将无关记录入队。私有后端能力使授权成为结构性保证,并确保公共服务在整个回放过程中保持关闭。
**以不挂载插件表示禁用状态。** 这仍然是静默退出方式,但无法在记录反馈时输出警告。显式禁用模式让部署方可以保持同一种配置形态,并说明本地反馈未离开进程。
## 后果
`FULL` 与原有默认值保持源码及协议兼容。`FEEDBACK_ONLY` 在反馈前不增加遥测自有的逐事件缓冲;直接服务调用与非权威反馈事件均不上传任何内容,且反馈前发生崩溃时,该前缀也不上传任何内容。回放使用记录反馈时挂载的脱敏策略,并排除权威日志中不存在的运维记录。因此,仅反馈的流既不携带 `agent-error` 记录,也不携带 `shutdown` 记录,而缺少 shutdown 不是崩溃信号。每个后续反馈都会捕获从上一个边界起累积的后缀。`DISABLED` 可省略 `exporter.url`,不执行任何上报工作,并仅在权威会话日志中保留反馈。

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# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-08-06-resolved-theme-color-metadata.md
2026-08-06-resolved-theme-color-metadata.md: 2f7a6f0bde5e75aeb6769939cae54d5319aa5bae
2026-08-06-resolved-theme-color-metadata.zh.md: a6d530f841d5c744fc88831f9cb685d1ab5027b6

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# Agent Note: Resolved theme color metadata
Status: implemented
English | [中文](2026-08-06-resolved-theme-color-metadata.zh.md)
## Problem
The web client can resolve its theme independently of the operating-system preference, so a single manifest `theme_color` or media-qualified static metadata can disagree with an explicit Light or Dark selection. Browser chrome around an installed or ordinary page then need not match the app surface even though the layout presenter already owns the resolved document palette.
## Decision
The ui-layout `ThemePresenter` owns one `<meta name="theme-color">` alongside its root `color-scheme`, dark-palette attribute, and inline token writes. After applying a resolved snapshot's palette and token overrides, the presenter reads the body's computed `background-color` into the metadata element and inserts that single node into the document head. Subsequent snapshots update the same node, and disposal removes it.
The rendered body background remains the color authority. The PWA manifest carries no static `theme_color` or `background_color`, and `ThemeDefinition` gains no second color field that could drift from the token palette. This also lets a registered theme's base-background token reach browser UI through the same application path as its page surface.
## Verification
The presenter unit contract covers light and dark computed colors, node reuse, and disposal. The ui-layout composition test covers initial insertion, event-driven reuse, and fiber cleanup. The Web browser settings scenario drives Light, Dark, System, operating-system changes, and reload through the shipped composition, asserting one metadata element whose content equals the computed body background with no console errors. The metadata change has no rendered accessibility-tree output, so the existing scenario golden remains unchanged.
## Alternatives considered
**Set `theme_color` in the manifest.** A manifest provides one app-wide value, so either built-in palette can disagree with it; the manifest deliberately omits the field.
**Declare light and dark metadata with `prefers-color-scheme` media queries.** Media queries follow the operating system, not an explicit in-app selection, and therefore cannot represent the resolved preference.
**Add a `themeColor` field to every `ThemeDefinition`.** A separate value gives custom themes an independent browser-chrome choice, but duplicates the base-background color and permits the page and surrounding UI to drift. A distinct field can be introduced if a supported theme needs that intentional difference.
## Consequences
Supporting browsers update surrounding UI after the client applies its initial resolved snapshot and after every theme change; browsers without `theme-color` support ignore the metadata. Because the value comes from computed presentation, the client must keep a concrete body background. The presenter creates and removes its own node, while unrelated head metadata remains untouched.

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# Agent Note: 基于解析后主题的颜色元数据
Status: implemented
[English](2026-08-06-resolved-theme-color-metadata.md) | 中文
## 问题
Web 客户端可以独立于操作系统偏好解析主题,因此 manifest(元数据清单)中单一的 `theme_color` 值或带媒体条件的静态元数据可能与显式选择的 Light 或 Dark 不一致。此时,无论是已安装页面还是普通页面,其周围的浏览器界面都未必与应用界面一致,尽管布局呈现器已经拥有解析后的 document 调色板。
## 决策
ui-layout 的 `ThemePresenter` 拥有一个 `<meta name="theme-color">`,与根元素上的 `color-scheme`、深色调色板属性和内联 token 写入并列。在应用解析后快照的调色板与 token 覆盖值之后,呈现器读取 body 计算样式中的 `background-color`,写入该元数据元素,再将该节点插入 document head。后续快照会更新同一节点,资源释放时则移除它。
渲染后的 body 背景仍是颜色真源。PWA manifest 不包含静态 `theme_color` 或 `background_color`,`ThemeDefinition` 也不新增可能与 token 调色板偏离的第二个颜色字段。这样一来,注册主题的基础背景 token 也能通过页面界面使用的同一条应用路径作用于浏览器界面。
## 验证
呈现器的单元测试契约覆盖浅色和深色模式下的计算颜色、节点复用及资源释放。ui-layout 组合测试覆盖初始插入、事件驱动的复用和 fiber 清理。Web 浏览器设置场景通过实际交付的组合依次驱动 Light、Dark、System、操作系统偏好变化和重新加载,并断言页面始终只有一个元数据元素,其内容等于计算后的 body 背景且控制台无错误。这项元数据变更不会出现在渲染后的无障碍树输出中,因此场景现有的预期输出保持不变。
## 曾考虑的替代方案
**在 manifest 中设置 `theme_color`。** manifest 只能提供一个适用于整个应用的值,因此任一内置调色板都可能与之不一致;manifest 有意省略该字段。
**用 `prefers-color-scheme` 媒体查询声明浅色和深色元数据。** 媒体查询跟随操作系统,而非应用内显式选择,因此无法表示解析后的偏好。
**为每个 `ThemeDefinition` 添加 `themeColor` 字段。** 单独的值可让自定义主题独立选择浏览器界面配色,但会复制基础背景色,并允许页面与周围的浏览器界面发生偏离。如果受支持的主题需要这种有意差异,可以再引入独立字段。
## 后果
支持该元数据的浏览器会在客户端应用初始解析后快照及之后每次主题变化时更新周围界面;不支持 `theme-color` 的浏览器会忽略这项元数据。由于该值来自计算后的呈现结果,客户端必须确保 body 始终有明确的背景色。呈现器会创建并移除自己的节点,head 中无关的元数据则保持不变。

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# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-08-06-web-install-manifest.md
2026-08-06-web-install-manifest.md: d400c6e586f4b735fa8e3dcc4899c97e45ac89c1
2026-08-06-web-install-manifest.zh.md: a7fee0248261e8d0597bb773d4f390973147337b

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# Agent Note: Web install manifest metadata
Status: implemented
English | [中文](2026-08-06-web-install-manifest.zh.md)
## Problem
The Web build has a document title and favicon but no manifest from which a browser can discover a stable installed identity, launch boundary, or installed presentation. Adding that metadata can also imply capabilities the app does not provide: a service worker suggests an offline contract, while a single language or palette value misrepresents a bilingual UI with resolved light and dark themes.
## Decision
The Web entry links `/manifest.webmanifest`, which Vite copies from `apps/web/public/` into the production build. The manifest names the product `DeepSeek Harness`, gives installed chrome the compact name `DSH`, and fixes `id`, `start_url`, and `scope` at `/`. It requests `display: "fullscreen"` so supporting browsers can give the installed editor-like surface the available display area while leaving ordinary tabs unchanged; browsers may apply user overrides or fall back to another display mode. Its icon entry reuses `/favicon.svg` as an SVG of size `any` and purpose `any`.
This follows code-server's fullscreen choice without copying its `window-controls-overlay` display override. DSH has no custom title bar or layout around native window controls, so such an override would supersede fullscreen without owning the required safe layout.
The manifest deliberately has no `lang`, `theme_color`, or `background_color`. The product surface is bilingual rather than owned by one manifest language, and either static color can disagree with one of the resolved app palettes. Theme metadata therefore remains outside the install manifest.
This feature adds no service worker, cache policy, or offline fallback. The manifest supplies install metadata only; browser eligibility and install affordances remain browser policy. The shipped [`dsh-frontend-static`](../../../../packages/host/frontend-static/README.md) fallback recognizes `.webmanifest` as `application/manifest+json` so the same asset is valid through the shipped HTTP composition rather than only in Vite's output directory.
## Verification
The built-Web test parses the emitted manifest and pins the complete metadata object, including the human-visible name, compact name, icon, root identity, launch boundary, and display mode, while also verifying that the production `index.html` retains the link. The `dsh-frontend-static` real Loader composition test serves a `.webmanifest` fixture and pins its `application/manifest+json` media type.
## Alternatives considered
**Add a service worker and call the app offline-capable.** Rejected because caching the shell without defining session transport, invalidation, failure behavior, and upgrade semantics would create a misleading partial offline contract.
**Declare one `lang`.** Rejected because no single language describes the bilingual product surface; omission avoids claiming that one locale owns the installed experience.
**Choose one static background and theme color.** Rejected because the app resolves light and dark palettes at runtime, so either fixed value is knowingly wrong for one supported state.
**Ship raster and maskable icon variants immediately.** Rejected until a supported installation target demonstrates a requirement the existing scalable favicon cannot meet. New variants remain an additive manifest change rather than a prerequisite for exposing the current identity.
**Assert only root and display fields in the built artifact.** Rejected because dropping or changing the product name, compact name, or icon is also a shipped install regression. The test intentionally requires an explicit edit whenever any manifest metadata changes.
## Consequences
Supporting browsers can discover a stable root-scoped installed identity and fullscreen preference without the application promising offline behavior. Deploying this build below a path prefix requires revisiting the absolute link, identity, launch, scope, and icon URLs together. Browser-specific icon requirements may add variants later, and every intentional metadata change updates the exact built-artifact contract.

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# Agent Note: Web 安装 manifest 元数据
Status: implemented
[English](2026-08-06-web-install-manifest.md) | 中文
## 问题
Web 构建产物已有文档标题和 favicon,却没有可供浏览器发现稳定安装身份、启动边界或安装后呈现方式的 manifest(元数据清单)。添加这类元数据也可能暗示应用并不具备的能力:service worker 会让人以为应用提供离线契约,而单一语言或调色板取值会错误描述这个能够解析浅色与深色主题的双语 UI。
## 决策
Web 入口链接 `/manifest.webmanifest`,Vite 会将其从 `apps/web/public/` 复制到生产构建产物。manifest 将产品命名为 `DeepSeek Harness`,为安装后的浏览器界面提供简称 `DSH`,并把 `id`、`start_url` 和 `scope` 固定为 `/`。它请求 `display: "fullscreen"`,使支持这一模式的浏览器能够把可用显示区域交给安装后的编辑器式界面,同时不改变普通标签页;浏览器可以应用用户覆盖设置,或回退到其他显示模式。其图标条目复用 `/favicon.svg`,将它作为尺寸为 `any`、用途为 `any` 的 SVG。
这一选择沿用了 code-server 的全屏方案,但没有照搬其 `window-controls-overlay` 显示覆盖项。DSH 没有自定义标题栏,也没有围绕原生窗口控件安排布局,因此使用这类覆盖项会在未落实所需安全布局的情况下取代全屏模式。
manifest 有意不包含 `lang`、`theme_color` 或 `background_color`。产品界面支持双语,并不由 manifest 中的单一语言定义;任一静态颜色值都可能与应用解析后的一套调色板不一致。因此,主题元数据仍放在安装 manifest 之外。
该功能不添加 service worker、缓存策略或离线回退。manifest 只提供安装元数据;是否具备安装资格、是否提供安装入口仍由浏览器策略决定。实际交付的 [`dsh-frontend-static`](../../../../packages/host/frontend-static/README.md) 回退将 `.webmanifest` 识别为 `application/manifest+json`,因此同一资产经实际交付的 HTTP 组合提供时同样有效,而不只在 Vite 输出目录中有效。
## 验证
Web 构建产物测试解析输出的 manifest,并固定完整的元数据对象,包括面向用户显示的名称、简称、图标、根路径身份、启动边界和显示模式,同时验证生产构建的 `index.html` 仍保留该链接。`dsh-frontend-static` 的真实 Loader 组合测试提供一个 `.webmanifest` fixture(测试前置数据),并固定其 `application/manifest+json` 媒体类型。
## 曾考虑的替代方案
**添加 service worker,并宣称应用支持离线。** 不予采纳,因为只缓存应用外壳,却不定义会话传输、失效策略、失败行为和升级语义,会形成具有误导性的不完整离线契约。
**声明单一的 `lang`。** 不予采纳,因为没有任何一种语言足以描述双语产品界面;省略该字段可避免声称安装后的体验由某一种区域设置独占。
**选择一组静态背景色和主题色。** 不予采纳,因为应用会在运行时解析浅色和深色调色板,因此选择任一固定值,都是明知它与其中一种受支持状态不符。
**立即交付光栅和可遮罩图标变体。** 在某个受支持的安装目标证明现有可缩放 favicon 无法满足其要求之前,不予采纳。新变体只是对 manifest 的增量扩展,并非公开当前身份的前提。
**只断言构建产物中的根路径字段和显示字段。** 不予采纳,因为产品名称、简称或图标被删除或更改,同样属于已交付安装体验的回归。任何 manifest 元数据发生变化时,测试都有意要求显式改动。
## 后果
支持这一机制的浏览器可以发现以根路径为作用域的稳定安装身份和全屏偏好,而应用无需承诺离线行为。在路径前缀下部署该构建产物时,必须同时重新审视绝对路径的 manifest 链接,以及身份、启动、作用域和图标 URL。日后可能因浏览器特有的图标要求而新增变体;每一项有意的元数据变更都会同步更新精确的构建产物契约。

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# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-08-06-web-skill-tool-row.md
2026-08-06-web-skill-tool-row.md: fcf5c3b5b61c94b0823fe54624c3dc906c520348
2026-08-06-web-skill-tool-row.zh.md: bef36df44d97af3993c9760a6b6d3add7b7c932c

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# Agent Note: Web skill tool row
Status: implemented
English | [中文](2026-08-06-web-skill-tool-row.zh.md)
## Problem
The Web transcript renders `skill` calls through the generic fallback row, so a loaded instruction set looks like an unknown tool call even though Skill is a first-class product concept. The generic row also exposes the JSON argument envelope beside the result, adding noise around the one identity users need: the loaded skill name.
## Decision
`ui-skill` registers a component under the existing `conversation.chat.toolview` keyed slot with key `skill`. The component owns its row chrome from the public `ToolRowProps` contract, matching the independent registrant posture used by the Bash sample instead of importing conversation-private components.
The collapsed row uses a 14-pixel document-and-sparkle glyph and the Bash row's neutral hierarchy: tertiary glyph, secondary `Skill` title, caption separator, and tertiary skill name. Running, failed, and interrupted calls retain the transcript's shimmer, error dot and first-line summary, and warning dot semantics. A settled call expands through the whole summary row into a 260-pixel bounded `Instructions` card containing the exact durable result text; the existing trajectory `Inspect` handoff remains available below the card.
The row derives every visible value from a paired call/result slice in the current runtime window. It reads the skill name from the recorded `name` argument and the instructions from durable result content, and never joins the current skill catalog for descriptions or provider metadata. If pagination leaves the call outside the window, the result has no tool identity and remains on the generic fallback rather than extending the history wire contract. The existing ACP `skill-load` recording is seeded through the real Web persistence and composition path for a keyless interaction and accessibility snapshot.
## Alternatives considered
- Keep the generic tool row and add only a `skill` color selector in `ui-conversation`. This leaves the redundant input envelope and generic expanded body in place, and makes the conversation package own a domain-specific visual rule.
- Add a new `skill` value to the host tool render-intent union. The keyed client slot already identifies this tool when its call is in the runtime window, so a new cross-boundary presentation value adds protocol and snapshot surface without enabling another consumer.
- Export the conversation package's private `ToolRow` component for reuse. Client packages intentionally expose contracts rather than cross-package components; exporting it would couple independent feature packages to conversation implementation details.
## Consequences
`ui-skill` now depends on the public conversation toolview contract, locale and primitive packages, and React in addition to its reference-source dependencies. It owns a small copy of the disclosure-row chrome, so future global interaction changes must update this registrant alongside the Bash sample and conversation rows.
Cold replay stays deterministic when the installed skill catalog changes, and the transcript remains compact until instructions are explicitly expanded. A result-only history page intentionally uses the generic fallback; keeping this edge case generic preserves the existing history protocol and confines the feature to client presentation. The dedicated card intentionally shows the tool's complete framed output rather than extracting only `<skill_instructions>`, preserving exactly what reached the model and avoiding a second parser for the skill result format.

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# Agent Note: Web skill 工具行
Status: implemented
[English](2026-08-06-web-skill-tool-row.md) | 中文
## 问题
Web transcript(文本记录)通过通用后备行渲染 `skill` 调用,使已加载的指令集看起来像一次未知工具调用,尽管 Skill(技能)已是产品中的一等概念。通用行还会在结果旁暴露 JSON 参数的外层结构,围绕用户真正需要的唯一标识增加了噪声:已加载的 skill 名称。
## 决策
`ui-skill` 在现有的 `conversation.chat.toolview` 键控 slot 下注册 key 为 `skill` 的组件。该组件基于公开的 `ToolRowProps` 契约自行实现行 chrome,沿用 Bash 示例的独立注册方姿态,而不导入 conversation 私有组件。
收起的行使用 14 像素的文档与闪光组合图标,并沿用 Bash 行的中性色层级:图标采用三级色,`Skill` 标题采用二级色,分隔符采用 caption 色,skill 名称采用三级色。运行、失败和中断调用分别沿用 transcript 的扫光、错误状态点加首行摘要,以及警告状态点语义。已结算调用可以通过整个摘要行展开一个高度上限为 260 像素的 `Instructions` 卡片,其中原样呈现持久化结果文本;用于跳转至 trajectory 的现有 `Inspect` 入口仍保留在卡片下方。
该行的所有可见值均派生自当前 runtime 窗口中已配对的调用/结果片段。skill 名称来自已记录的 `name` 参数,指令来自持久化的结果内容;该行绝不关联当前 skill 目录来读取描述或提供方元数据。如果分页将调用留在窗口外,结果便没有工具身份,并继续使用通用后备路径,而不是扩展 history 协议契约。现有的 ACP(Agent Client Protocol)`skill-load` 记录经由真实的 Web 持久化与组合路径写入,用于无需密钥的交互和无障碍快照。
## 考虑过的替代方案
- 保留通用工具行,只添加一个 `skill` 颜色选择器,并将其放在 `ui-conversation` 中。该方案仍会保留多余的输入外层结构和通用展开体,也会让 conversation 包拥有特定领域的视觉规则。
- 在宿主工具渲染意图联合类型中添加新的 `skill` 值。键控客户端 slot 在调用位于 runtime 窗口内时已经能够识别该工具,因此新的跨边界呈现值只会增加协议和快照表层,却不会支持其他消费方。
- 导出 conversation 包的私有 `ToolRow` 组件供复用。客户端包刻意对外暴露契约而非跨包组件;导出该组件会使独立功能包耦合到 conversation 的实现细节。
## 后果
除了引用 source 的依赖外,`ui-skill` 现在还依赖公开的 conversation toolview 契约、locale 包、原语包和 React。它自行保留了一小份折叠展开行 chrome,因此未来的全局交互变更必须与 Bash 示例和 conversation 行同步更新这个注册方。
即使已安装的 skill 目录发生变化,冷回放仍保持确定性;在用户显式展开指令前,transcript 保持紧凑。仅含结果的 history 页有意使用通用后备路径;让这个边缘情况保持通用呈现,可以保留现有 history 协议,并将该功能限定在客户端呈现层。专用卡片有意显示工具完整封装的输出,而不是只提取 `<skill_instructions>`,从而原样保留模型实际收到的内容,也避免为 skill 结果格式再引入一个解析器。

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# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
# side as of the last confirmed-consistent state. Both languages carry equal authority;
# after editing either side, bring the other along and re-record with:
# pnpm run verify-translation-pairing --write .agents/notes/implemented/feature/2026-08-07-default-model-follows-the-picker.md
2026-08-07-default-model-follows-the-picker.md: d20f0ab8b8c8bd19f596e6ef73f0a58d96c24d38
2026-08-07-default-model-follows-the-picker.zh.md: 0d2821cb63407fe766e6fe3d36de31d9fc6f1c13

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# Agent Note: the default model follows the picker
Status: implemented
English | [中文](2026-08-07-default-model-follows-the-picker.zh.md)
## Problem
The route a new session started from was frozen into the gateway's composition entry (`api-gateway` in the web-app bundle patch). Switching models in a conversation reached that conversation only: the next session went back to the shipped default, and the only way to change it was to hand-edit a `cordis.yml` row and restart. There was no user-settings tier between the composition and the per-session choice.
## Decision
`ApiProxyService` registers its `{provider, model, reasoningEffort?}` slice as the `api-gateway` settings section: the composition entry is the `base` layer and `settings.yaml` layers the user's choice over it. `workspaceRoot` stays outside the section — a launcher fact, not a preference. `reasoningEffort` is the mirror case: it lives in the section but NOT in the plugin config, because the seam merges the user layer over the composition entry per field and an absent key cannot override a present one. A composition-set effort would therefore survive every later switch to a model without one — precisely the stranding the wholesale `replace` exists to prevent. Effort is a per-model fact anyway; a deployment default for it belongs on the adapter profile, which resolves per model.
`session.selectModel` records an accepted switch as the new default. There is no separate gesture: switching models in the composer IS how the default is chosen. The write is `replace`, not `update` — switching to a model with no reasoning effort has to clear a stored one, and a merged patch would strand it for the next session to fail on. A storage failure is logged without undoing the switch, which already applies to its own session, and a deployment with no settings provider keeps the entry with the switch staying process-local.
`ApiProxyDefaults` carries `defaultTarget()` and `persistDefaultTarget()` closures instead of flat `provider`/`model` fields, so `createApiProxy` needs no knowledge of the settings seam.
`targetFor` resolves its tiers on **every** read rather than seeding a ref once: an explicit selection in this process, else the session's own latest logged `request/header`, else the live default. Both directions depend on the re-read. A session that has run a turn derives from its log forever after, so changing the default never retargets it. A session still blank starts from a default saved after it was created — which matters because New Session reuses a blank session rather than minting another, so a creation-time seed would show the superseded model in exactly the flow the feature exists for.
The stored route is not validated against the registry. A default naming a route the Models page has since removed still reaches `session.models` as `current`, matching no advertised group — which is what makes the composer seat's existing fallback prompt for a selection instead of naming a model the deployment cannot reach.
## Consequences
`ApiProxyDefaults` changed shape, updating ~40 test construction sites. `host.describe` now reports the live default rather than a captured one, which is what it always meant. `settings.yaml` gains an `api-gateway:` section the moment a user switches models; the `api-gateway` namespace is deliberately NOT added to the gateway's exposed-namespace allowlist, so the Settings page neither reads nor writes it — the model picker is its editor.
## Follow-up: blocking a session that cannot send
A default naming a route the Models page has since removed leaves the composer saying "Select model" while the input still accepts a message, which then fails inside the adapter mid-turn. Two changes close it.
The Host refuses. `session.prompt` checks whether an adapter serves the session's route and answers `model-unavailable` before opening a turn. This is the enforcement boundary: a client that disables its composer is an affordance, and the method stays callable regardless.
The composer goes inert. `session.models` reports `routable`, and ui-model pushes a block through the new `ctx.conversation.blocks` registry; the bar renders the same disabled textarea it already renders without a workspace, with the blocker's own localized reason as the placeholder — except the model seat, which a block deliberately leaves live, because choosing a model is how the user clears it. The push direction is forced — ui-model already depends on ui-conversation, so ui-conversation cannot read it back.
The gate is `routable`, NOT "the current target matches no advertised group". Catalog membership is advisory by design: a route serving a model it stopped advertising is absent from the groups yet perfectly usable, and blocking there would break a supported configuration (a narrowed `models` list over a live route). `routable` is also three-valued on the client — `null` before the first load or after a failed one never blocks, so a slow or unreachable Host cannot lock a working composer.
## Alternatives considered
- **Falling back to the composition entry when the stored route is unregistered.** Rejected: the composer would then name the shipped DeepSeek model instead of prompting, which is both a silent switch to a provider the user did not pick and the opposite of the requested behavior.
- **Validating and clearing a stale default.** Rejected: catalog membership is advisory by design (`buildModelCatalog` documents it), so an adapter may serve a model its own catalog stopped advertising; self-healing would break that deliberate case.
- **A `settings.update` merge patch.** Rejected: it cannot clear `reasoningEffort`, so a switch from a reasoning model to a plain one leaves an effort the next session fails on.
- **Persisting only from blank sessions.** Rejected: the most informative switch is the one made mid-conversation after seeing a model underperform, and that one would never be saved.
- **A separate "set as default" affordance.** Rejected for now: it adds a second gesture for what every comparable product infers from the switch itself. The cost is that a temporary switch in an old session also moves the default.

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# Agent Note: 默认模型跟随选择器
Status: implemented
[English](2026-08-07-default-model-follows-the-picker.md) | 中文
## 问题
新会话的起始路由被冻结在网关的组合条目里(web-app bundle patch 中的 `api-gateway` 行)。在一段对话里切换模型只影响这段对话:下一个会话又回到出厂默认,而要改这个默认值,唯一的办法是手工编辑一条 `cordis.yml` 行并重启。组合层与每会话选择之间没有用户设置这一层。
## 决定
`ApiProxyService` 把自己的 `{provider, model, reasoningEffort?}` 切片注册为 `api-gateway` 设置段:组合条目是 `base` 层,`settings.yaml` 把用户的选择叠加其上。`workspaceRoot` 留在段外——它是启动器事实,不是偏好。`reasoningEffort` 则是镜像的一例:它在段里、但**不在**插件配置里,因为 seam 是按字段把用户层合并到组合条目之上的,缺席的键覆盖不了存在的键。组合层设的推理等级因此会在此后每一次切到不支持推理的模型时继续存活——正是整段 `replace` 想要杜绝的那种滞留。何况推理等级本就是按模型的事实,它的部署级默认值属于适配器 profile,那里是按模型解析的。
`session.selectModel` 把被接受的切换记录为新的默认值。没有另一个单独的手势:在输入框切模型**就是**选定默认值的方式。写入用 `replace` 而非 `update`——切到一个不支持推理的模型必须清掉已存的等级,而合并补丁会把它滞留下来,让下一个会话在它上面失败。存储失败只记日志,不撤销这次切换(它对自己所在的会话已经生效);没有设置提供方的部署保留组合条目,切换只停留在进程内。
`ApiProxyDefaults` 改为携带 `defaultTarget()` 与 `persistDefaultTarget()` 两个闭包,而不是扁平的 `provider`/`model` 字段,这样 `createApiProxy` 不需要知道设置这条缝的存在。
`targetFor` 在**每一次**读取时解析各级,而不是只在创建时种一次 ref:本进程内的显式选择,其次是该会话自己最新记录的 `request/header`,最后才是活的默认值。两个方向都依赖这次重新读取。已经跑过一轮的会话此后永远从自己的日志推导,改默认值不会重定向它;而仍然空白的会话会用上它创建之后才保存的默认值——这一点很关键,因为新建会话是复用空白会话而不是再开一个,创建时种下的值恰好会在这个功能存在的意义所在的流程里显示已被取代的模型。
存下来的路由不做注册表校验。默认值指向一条模型页已经删除的路由时,它照样作为 `current` 送到 `session.models`,匹配不到任何已公布的分组——而这正是让输入框选择器已有的回退提示重新选择、而不是显示一个部署根本够不着的模型的原因。
## 影响
`ApiProxyDefaults` 形状变了,约 40 处测试构造点随之更新。`host.describe` 现在报告的是活的默认值而非捕获的快照,这本就是它一直想表达的含义。用户一旦切换模型,`settings.yaml` 就会多出一个 `api-gateway:` 段;`api-gateway` 这个 namespace 刻意**没有**加进网关的暴露名单,因此设置页既不读也不写它——模型选择器就是它的编辑器。
## 后续:让发不出消息的会话禁止输入
默认值指向一条模型页已删除的路由时,编辑器显示「选择模型」,输入框却仍接受消息,然后这一轮在适配器内部失败。两处改动关掉这个口子。
宿主拒绝。`session.prompt` 检查是否有适配器服务该会话的路由,在开启轮次之前就以 `model-unavailable` 应答。这是执行边界:客户端禁用编辑器只是提示性设计,这个方法始终可被调用。
编辑器变惰性。`session.models` 报告 `routable`,ui-model 经新的 `ctx.conversation.blocks` 注册表推送一个 block;输入栏渲染的仍是它在没有 Workspace 时就会渲染的那个禁用 textarea,只是把抬起方自己的本地化理由作为 placeholder——唯独模型 seat 被 block 刻意保留可用,因为用户正是靠选模型来解除它。推送方向是被迫的——ui-model 本就依赖 ui-conversation,因此 ui-conversation 读不回去。
闸门是 `routable`,**不是**「当前目标匹配不到任何已公布分组」。目录成员关系按设计是咨询性的:一条仍在服务、只是不再公布该模型的路由不在分组里,却完全可用,在那里阻断会破坏一种受支持的配置(对一条活着的路由收窄 `models` 列表)。`routable` 在客户端还是三值的——首次加载之前或加载失败之后的 `null` 绝不阻断,因此慢的或够不着的宿主锁不死一个本来能用的编辑器。
## 考虑过的替代方案
- **存下来的路由未注册时回落到组合条目。** 否决:那样输入框会显示出厂的 DeepSeek 模型而不是提示选择,既是静默切到用户没选的提供方,也与要求的行为正好相反。
- **校验并清空失效的默认值。** 否决:目录成员关系按设计是咨询性的(`buildModelCatalog` 有注释说明),适配器可以服务一个自己目录已不再公布的模型;自动修复会破坏这个刻意保留的情形。
- **用 `settings.update` 合并补丁。** 否决:它清不掉 `reasoningEffort`,于是从推理模型切到普通模型会留下一个等级,让下一个会话在它上面失败。
- **只在空白会话里持久化。** 否决:最有信息量的切换恰恰是对话到一半发现模型不行时做的那一次,而它永远存不下来。
- **单独做一个「设为默认」的入口。** 目前否决:同类产品都从切换本身推断的事情,它却要多一个手势。代价是在老会话里的临时切换也会移动默认值。