Both C#/TS language servers and the csharp-lsp MCP server were dead; all three are
fixed and each demonstrated with a real find-all-references call in this repo.
Root causes were one shape — a config naming a path this machine does not have,
with nothing checking. None returned a wrong answer; each refused to start:
- csharp-ls: MSBuildLocator needs a dotnet root owning host/fxr; Homebrew's bin
has none, libexec does.
- typescript-language-server: the LSP workspace root is the repo root but
`typescript` lives in web/node_modules, and the plugin cannot pass a tsserver
path (v5 dropped --tsserver-path; lspServers cannot set initializationOptions).
- the csharp-lsp MCP server: .mcp.json named a dotnet install that no longer
existed, while ~/.codex/config.toml's copy of the same server had been migrated.
Both files are gitignored, so nothing could compare them.
Corrects defect-shapes-773.md §5.1: the "workflow agents must use csharp-lsp" note
names the MCP server's tools, which subagents DO reach — it was dead because the
server could not start, not because agents cannot call it. The LSP tool is the one
no subagent has been observed to resolve.
Six cold review rounds. Five false greens were found in this PR's own verification
code, each introduced by the fix for the previous one — extracted as #796.
fixes#777
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
