tools/lsp: port LSP tools from Python to Go
Implements a bridge daemon + client architecture in pure Go:
- tools/lsp/ — shared library (adapter registry, LSP server management,
JSON-RPC framing, bridge daemon, client)
- tools/lsp/cmd/{lsp_definition,lsp_references,lsp_hover,lsp_rename,
lsp_symbols,lsp_completion,lsp_diagnostics}/ — individual binaries
Each binary:
- Reads JSON args from stdin (same contract as before)
- Connects to bridge daemon over Unix socket (starts it if needed)
- Bridge manages long-lived LSP server processes (gopls, clangd, intelephense)
- Bridge auto-exits after 5min idle
Removes:
- Python LSP tool scripts (data/tools/lsp_*)
- Python LSP library (data/tools/_lib/lsp/)
Adds lsp-tools build target to justfile. The .meta sidecar files remain
in data/tools/ and are installed alongside the compiled binaries.
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