Merge refreshed docs/i18n-batch-core into docs/i18n-batch-cds-postmortem
# Conflicts: # .agents/notes/README.i18n.yaml # .agents/notes/README.zh.md # docs/core-data-structures/bash.md # docs/core-data-structures/code-runtime.md # docs/core-data-structures/compaction.md # docs/core-data-structures/scope.md # docs/core-data-structures/session-query.md # docs/core-data-structures/user-interaction.md # docs/core-data-structures/web.md # docs/rfc/README.md # scripts/translation-pairing.manifest.json # scripts/type-equiv.manifest.json
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Tianyi Cui
@@ -2,7 +2,7 @@
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English | [中文](web.zh.md)
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The web access seam — a [capability seam](../rfc/implemented/architecture/2026-06-24-web-capability-seam.md) that spans **two capabilities** (search and fetch) on one `ctx.web` service, split across packages: interface ([dsh-web](../../packages/web/web), `ctx.web` + the provider registries), implementations ([dsh-web-search-exa](../../packages/web/web-search-exa), [dsh-web-search-perplexity](../../packages/web/web-search-perplexity), [dsh-web-search-deepseek](../../packages/web/web-search-deepseek), [dsh-web-fetch-local](../../packages/web/web-fetch-local)), and consumer ([dsh-tool-web](../../packages/web/tool-web), the `web_search`/`web_fetch` tool schemas). Web is **one optional capability**, not part of the agent-loop spine — so its vocabulary lives here, not in [core.md](core.md). A search-provider swap does not change how the model asks for a query, and a fetch-implementation swap does not change how the model asks for a URL.
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The web access seam — a [capability seam](../../.agents/notes/implemented/architecture/2026-06-24-web-capability-seam.md) that spans **two capabilities** (search and fetch) on one `ctx.web` service, split across packages: interface ([dsh-web](../../packages/web/web), `ctx.web` + the provider registries), implementations ([dsh-web-search-exa](../../packages/web/web-search-exa), [dsh-web-search-perplexity](../../packages/web/web-search-perplexity), [dsh-web-search-deepseek](../../packages/web/web-search-deepseek), [dsh-web-fetch-local](../../packages/web/web-fetch-local)), and consumer ([dsh-tool-web](../../packages/web/tool-web), the `web_search`/`web_fetch` tool schemas). Web is **one optional capability**, not part of the agent-loop spine — so its vocabulary lives here, not in [core.md](core.md). A search-provider swap does not change how the model asks for a query, and a fetch-implementation swap does not change how the model asks for a URL.
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Source: [`packages/web/web/src/types.ts`](../../packages/web/web/src/types.ts)
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@@ -15,20 +15,37 @@ Search and fetch share no request schema and no business logic, but they are del
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The model-facing tool argument is just a `query`; `maxResults` is a consumer-owned bound (`dsh-tool-web`'s `searchMaxResults` config, default `8`) passed through the seam and enforced on the way back — if a provider over-returns, the seam truncates `sources[]` and sets `truncated`.
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```ts type-equiv
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/**
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* What one search-capable backend can return. The model-facing argument is just
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* a query; `maxResults` is a `dsh-tool-web`-layer bound passed through unchanged
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* and enforced on the way back by the seam (see {@link WebSearchResult}).
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*/
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interface WebSearchRequest {
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readonly query: string
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/**
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* Upper bound on returned sources; the seam truncates to it. Omitted = no
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* bound. `dsh-tool-web` always sets it.
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* bound. `dsh-tool-web` always sets it. A provider whose API supports a
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* result-count control (Exa's `numResults`) should apply it at the request
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* layer as a cost/latency optimization; the seam enforces the bound
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* regardless.
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*/
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readonly maxResults?: number
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}
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```
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```ts type-equiv
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/**
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* Normalized search outcome. `content` is optional provider-generated answer
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* text or summary (Exa returns none; Perplexity returns a generated answer).
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* `sources[]` is the portable citation surface. `truncated` is set by the seam
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* when it cut `sources[]` down to `maxResults`.
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*/
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interface WebSearchResult {
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/** Optional provider-generated answer text, search context, or summary. */
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readonly content?: string
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/** Citeable sources, already truncated to the request's `maxResults`. */
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readonly sources: readonly WebSearchSource[]
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/** True when the seam dropped sources to honor `maxResults`. */
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readonly truncated: boolean
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}
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```
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@@ -36,10 +53,17 @@ interface WebSearchResult {
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`content` is optional provider-generated answer text (Exa and DeepSeek return none; Perplexity returns a generated answer). `sources[]` is the portable citation surface. A source always has a `url`; `title`/`snippet`/`publishedAt` are optional because not every provider returns them — Perplexity citations may be URL-only, and forcing adapters to invent the rest would make the seam lie. `dsh-tool-web` renders `title ?? hostname(url)`.
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```ts type-equiv
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/**
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* One citeable source. A source always has a URL; `title`, `snippet`, and
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* `publishedAt` are optional because not every provider returns them — forcing
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* adapters to invent them would make the seam lie (Perplexity citations may be
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* URL-only). `dsh-tool-web` renders `title ?? hostname(url)` for display.
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*/
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interface WebSearchSource {
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readonly url: string
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readonly title?: string
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readonly snippet?: string
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/** Publication/crawl timestamp as a provider-supplied ISO-8601 string. */
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readonly publishedAt?: string
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}
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```
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@@ -47,6 +71,12 @@ interface WebSearchSource {
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## Fetch request and result
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```ts type-equiv
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/**
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* What one fetch-capable backend is asked to retrieve. The request deliberately
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* omits timeout, format, prompt, and extraction controls: cancellation is a
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* direct execution argument, while presentation and higher-level LLM concerns
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* belong outside safe retrieval.
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*/
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interface WebFetchRequest {
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readonly url: string
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}
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@@ -55,10 +85,20 @@ interface WebFetchRequest {
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HTTP status is part of the fetched resource state, not automatically a failure: a successful network fetch of a `404`/`500` returns a `WebFetchResult` with the status code and a bounded decoded body. `url` is the final URL after allowed redirects. `WebError` is reserved for failures to safely retrieve or represent the resource.
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```ts type-equiv
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/**
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* Normalized fetch outcome. A successful network fetch of a non-2xx response is
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* a result, not an error: the status code is part of the fetched resource
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* state. {@link WebError} is reserved for failures to safely retrieve or
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* represent the resource.
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*/
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interface WebFetchResult {
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/** The final URL after allowed redirects (the request URL is in the request). */
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readonly url: string
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/** HTTP status code of the fetched response. */
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readonly statusCode: number
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/** Decoded body, classified by content kind. */
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readonly body: WebFetchBody
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/** True when the provider capped the decoded body. */
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readonly truncated: boolean
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}
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```
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@@ -66,6 +106,15 @@ interface WebFetchResult {
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`WebFetchBody` is a **closed** discriminated union owned by `dsh-web` (not a merge-extensible map): the provider decodes the kind and `dsh-tool-web` renders it, so a new kind is a coordinated change across known packages, not a plugin extension. Consumers `switch` on `kind` ending in `default: assertNever(...)`, so adding a kind breaks compilation at every consumer until handled. Each arm stays its own object literal even where fields coincide today, leaving room for arm-specific fields later (a future `pdf` body's `pageCount`).
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```ts type-equiv
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/**
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* The decoded body of a fetched resource. A CLOSED discriminated union owned by
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* `dsh-web`: the provider decodes the kind and `dsh-tool-web` renders it, so a
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* new kind is a coordinated change across known packages, not a plugin
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* extension. Consumers `switch` on `kind` ending in `default: assertNever(...)`
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* so adding a kind breaks compilation at every consumer until handled. Each arm
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* stays its own object literal even where fields coincide today, leaving room
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* for arm-specific fields later (a `pdf` body's `pageCount`).
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*/
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type WebFetchBody =
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| { readonly kind: 'html'; readonly content: string }
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| { readonly kind: 'text'; readonly content: string }
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