Wire LSP into the Read/Edit/Write tool flow so the agent automatically
gets diagnostics after file operations:
- lsp_transport: Add LspServerMessage enum, read_message() for handling
both responses and server-initiated notifications, notification queue
with drain_notifications(), send_request now handles interleaved
publishDiagnostics without breaking
- lsp_process: Add did_open(), did_change(), drain_diagnostics(),
open file tracking (HashSet) and version counters for didChange,
language_id_for_path() and severity_name() helpers
- lsp_client: Add notify_file_open(), notify_file_change(),
fetch_diagnostics_for_file() with best-effort graceful fallback,
registry-level open file tracking, diagnostic caching
- tools: Enrich run_read_file with didOpen + diagnostics, run_write_file
and run_edit_file with didChange + diagnostics, format_diagnostic_appendix()
for readable diagnostic output appended to tool results
All enrichment is non-blocking: if no LSP server is available, tools work
exactly as before. No errors propagate from the LSP layer.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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