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Add web capability seam: ctx.web, search/fetch providers, web tools

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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).
This commit is contained in:
Dudu-0223
2026-06-25 15:04:12 +08:00
parent a4091daa3d
commit d01f5f73b7
50 changed files with 3610 additions and 8 deletions
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8
knip.json
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@@ -29,6 +29,14 @@
"entry": ["tests/**/*.spec.ts", "tests/**/*.e2e.ts"],
"project": ["src/**/*.ts", "tests/**/*.ts"]
},
"packages/web/web-search-exa": {
"entry": ["tests/**/*.spec.ts", "tests/**/*.e2e.ts"],
"project": ["src/**/*.ts", "tests/**/*.ts"]
},
"packages/web/web-search-perplexity": {
"entry": ["tests/**/*.spec.ts", "tests/**/*.e2e.ts"],
"project": ["src/**/*.ts", "tests/**/*.ts"]
},
"packages/ui/acp-agent": {
"entry": ["tests/**/*.spec.ts", "tests/**/*.e2e.ts"],
"project": ["src/**/*.ts", "tests/**/*.ts"]