master's web_search/web_fetch tools were authored against the old
ToolCallPresentation bag; the render-intent union replaces it with a
card-tagged discriminated union. Both are simple generic cards, so they
declare card:'generic' explicitly.
- search providers (exa/perplexity/deepseek): map the parsed response
INSIDE the parse try, so a well-formed body of the wrong shape surfaces
as WEB_PROVIDER_ERROR instead of escaping as a raw TypeError; a WebError
the mapper throws on purpose is re-thrown untouched
- web-fetch-local: validate numeric limits at plugin construction (positive
finite caps; non-negative integer maxRedirects) rather than constructing a
provider with nonsensical values
- web-fetch-local: enforce the redirect budget BEFORE resolving each hop, so
maxRedirects:N follows exactly N redirects and an over-limit hop reports
"exceeded the maximum" rather than misdiagnosing a cross-origin block
- drop the stale dsh-tool-web/search and /fetch path aliases (the package no
longer declares those subpath exports)
- strip trailing EOF blank lines flagged by git diff --check
Each fix carries a regression test.
Introduce web access as a first-class capability seam so the model-facing
web tools stay stable while backends change. dsh-web owns ctx.web as a
provider registry with registration-order-independent selection and the
WebError taxonomy; dsh-web-search-exa, dsh-web-search-perplexity, and
dsh-web-fetch-local register capabilities into it; dsh-tool-web is the sole
owner of the model-facing web_search/web_fetch schemas, prompt sections, and
HTML-to-markdown presentation. Search and fetch are deliberately one seam.
Providers ship as namespace plugins that register into ctx.web (like an
LlmAdapter into ctx.llm), not key-owning services, since multiple search
providers cannot each own the key. Tool registration follows product
enablement, not backend availability, so load order/credentials never enter
the model contract; the seam resolves the provider at execution time and
surfaces a structured WebError otherwise.
Moves the RFC to implemented/ amended to match what shipped. Example/app
configs are intentionally not wired yet (RFC migration step 6).
Tianyi Cui
Dudu-0223