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deepseek-harness/packages/context/file-reference/README.md
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creatixchu 6bb79911ba refactor(reference): serve discovery through typert Remote faces
Replace the legacy reference.* API Proxy domain with @Remote methods on the
owning services, following the typert gateway design master adopted on
2026-08-02 (message-feedback and plugin-inventory precedents):

- FileReferenceService and SessionReferenceResolver extend TypertRemoteService;
  fileReferences/list and sessionReferenceResolver/candidates are unary Remote
  methods cancelled through the reserved trailing signal, and the candidates
  face attaches each candidate's canonical mention under the configured limit
- move the wire types to type-only ./types subpaths (FileReferenceCandidate,
  SessionReferenceMentionCandidate) and export ./typert plus ./remote artifacts
- mount both contributions in the api-remotes client assembly; ui-reference
  consumes ctx.remote instead of connection.api.references and registers zh/en
  locale dictionaries for its sections and labels
- delete the reference.* routes, schemas, map rows, client stubs, and fixtures;
  the connection fixture serves the Remote endpoints instead
- release deliverPrompt admission listeners when the agent is disposed with the
  prepared prompt still pending, and cover the reference-* RpcError codes in
  the schema spec
- add the missing tsconfig paths for the /grammar and /types subpaths (clean-
  tree vitest could not resolve @deepseek-ai/dsh-file-reference/grammar)
- regenerate the cordis catalog, capability seams, and event matrix; update the
  owning bilingual READMEs, Agent Notes, and the reference-composer golden
2026-08-17 18:35:30 +08:00

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Markdown

# `@deepseek-ai/dsh-file-reference`
English | [中文](README.zh.md)
File-reference discovery seam and browser-safe `@file` grammar shared by host-backed user interfaces. `ctx.fileReferences.list(agent, query, signal)` returns path-only file or directory candidates for the addressed agent; concrete providers own namespace access, ranking, caching, and invalidation. The same contract is remotely callable as the unary `fileReferences/list` Remote method (`@Remote` on the Service Definition, cancelled through the reserved trailing signal), so browser consumers call `ctx.remote.fileReferences.list` without an API Proxy route.
`activeAtToken()` recognizes an `@path` or open `@"path with spaces` token only at the start of input or after whitespace, so email-like text does not open completion. `formatFileMention()` emits the matching prompt spelling, appends `/` to directory candidates, preserves an explicitly opened quote, and rejects control characters or embedded quotes that the editor grammar cannot represent safely.
Selecting a candidate does not read or attach file contents. The exported `FILE_REFERENCE_PROMPT` is stable guidance that a provider may install when the addressed agent can call `read`.
## Model Experience
Indirectly, through `@deepseek-ai/dsh-file-reference-local`, which conditionally contributes this package's stable file-reference guidance.
#### KV Cache effect
The interface and grammar add no request tokens themselves; a provider-owned prompt section determines cache behavior.
## Known Limitations and Deferred Work
- **Path candidates are advisory** — the seam does not prove that a later model-facing filesystem tool can access the same namespace; deployments must align the provider with the effective `read` implementation.
- **No file-content reference object** — selected files remain ordinary prompt text and require an explicit model tool call before their contents become model-visible.