67c3c73046
- LSPWorkspaceIndex: track open docs, URI→{languageId,content,version}
- LSPDiagnosticsAggregator: merge diagnostics from multiple LSP sources per URI
- LSPCompletionMerger: merge+deduplicate completion items from multiple sources
- LSPOrchestrator: top-level coordinator composing all three + proxy + cross-lang resolver
- Sprint277IntegrationSummary: poly-api (Go+TypeScript) end-to-end integration
26/26 tests passing (5+5+5+5+6). All new headers ≤600 lines.
LoRA recorded: sprint277-2026-03-01 (1 call, 569 tokens).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>