Merge PR #680: arch(lsp): split server.go into focused sibling files

Author: merge-queue-bot

PLAN.md

@@ -220,6 +220,6 @@ footer: |
 | 2606210840 | ✅     | sonnet | [Same-file anchor-resolution rule for true gomarklint parity](plan/2606210840_same-file-anchor-resolution-rule.md)                      |
 | 2606211907 | ✅     |        | [arch-fix: split internal/engine/runner.go](plan/2606211907_arch-fix-runner-srp-split.md)                                               |
 | 2606211908 | 🔲     |        | [arch-fix: split internal/lint/layer0.go](plan/2606211908_arch-fix-layer0-split.md)                                                     |
-| 2606211909 | 🔲     |        | [arch-fix: split internal/lsp/server.go](plan/2606211909_arch-fix-lsp-server-split.md)                                                  |
+| 2606211909 | ✅     |        | [arch-fix: split internal/lsp/server.go](plan/2606211909_arch-fix-lsp-server-split.md)                                                  |
 | 2606211910 | 🔲     |        | [arch-fix: add trivial-accessor exemption comments in workspace.go](plan/2606211910_arch-fix-workspace-exemptions.md)                   |
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