Code Intel for DSH

Serena showed that coding agents need symbol-precise navigation, not just grep. This is a small, read-only DSH port of that workflow: local LSP servers, four tools, no embeddings, no hosted index, no API key.

What it adds

Tool	Job
code_definition	Jump to the real definition
code_references	Find impact before editing
code_symbols	Search classes/functions/variables
code_diagnostics	Compiler/type diagnostics for one file
code_hover	Type/documentation at a symbol
code_rename	Preview rename edits without writing

All six are read-only. code_rename returns a preview; it never writes files. Apply the preview with your normal editing tool after review.

Install

# once the public repo exists:
dsh plugin --profile web add github:lengrufeng2008/dsh-code-intel

# local package, before the repo is published:
dsh plugin --profile web add /home/lrf/dsh/products/dsh-code-intel/dsh-code-intel-0.1.0.tgz

Install at least one language server:

Language	Install
TypeScript / JavaScript	npm i -g typescript-language-server typescript@5.9
Python	pip install pyright
Go	go install golang.org/x/tools/gopls@latest
Rust	rustup component add rust-analyzer
C / C++	install LLVM clangd

Use

Use code_symbols to find where `parseSession` is defined.
Use code_references on this symbol before changing its signature.
Use code_diagnostics on the file I just edited.

Positions are 1-based. root defaults to the DSH workspace directory; files outside it are rejected.

Design

• One short-lived language-server process per call; no background daemon to leak.
• JSON-RPC over stdio, no dependencies.
• Server selection by file extension, or explicit language.
• Timeouts and install hints instead of silent fallback.
• Path containment check before opening a file.
• Diagnostics use publishDiagnostics; a server that only supports pull diagnostics returns none.

Real-server smoke

With typescript@5.9.3 and typescript-language-server@5.3.0, definition and references were smoke-tested against a small .ts file (1 definition, 2 references). The Python path was also smoke-tested with pyright-langserver (1 definition, 2 references). code_symbols needs a project context; for TypeScript, add a tsconfig.json and/or pass file so the server opens a project file first, or it may answer No Project. The bundled fake server keeps npm test independent of installed language servers.

What it does not do

• No write, apply-edit, or rename application. code_rename is preview-only.
• No cross-repo index, embeddings, or remote service.
• No guarantee that diagnostics equal a clean test run.
• No claim of parity with Serena's full feature set.

Provenance

Inspired by Serena; no source code copied. See NOTICE.md. License: MIT.

Tests

npm test

The test fixture is a fake LSP server, so npm test does not need TypeScript, Pyright, Go, or Rust installed. A real-server smoke test is listed in docs/SMOKE.md; the TypeScript path was smoke-tested with typescript@5.9.3 and typescript-language-server@5.3.0 (definition 1, references 2).