fix: increase LSP initialize timeout for JDTLS and KotlinLS

[norbu35]

Problem

JDTLS (Eclipse JDT Language Server) and KotlinLS are JVM-based language servers that must perform Gradle project sync and workspace indexing during the LSP initialize handshake. For real-world projects this routinely takes 60–180 seconds, well above the default 45 s timeout — causing every lsp_diagnostics call to fail with LSP request timeout (method: initialize).

See #23982 for full diagnosis.

Changes

• Add an optional initializeTimeout field to the LSPServer.Handle interface so built-in servers can declare their timeout needs
• Use it in client.ts with the existing INITIALIZE_TIMEOUT_MS (45 s) as the default — no behavior change for any other server
• Set initializeTimeout: 180_000 (3 min) for JDTLS and KotlinLS, both of which are JVM-based and trigger Gradle sync during initialization

Testing

All existing LSP tests pass:

31 pass, 0 fail across test/lsp/*
9 pass, 0 fail for test/config/lsp.test.ts

Before / After

Server	Before	After
JDTLS	45 s (always times out for Gradle projects)	180 s
KotlinLS	45 s (same issue)	180 s
All others	45 s	45 s (unchanged)

Closes #23982

[github-actions]

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[github-actions]

The following comment was made by an LLM, it may be inaccurate:

Based on my search, I found two potentially related PRs:

1. PR feat(opencode): add LSP timeout configuration #21006: "feat(opencode): add LSP timeout configuration"

   • feat(opencode): add LSP timeout configuration #21006
   • May be related as it addresses LSP timeout configuration broadly

2. PR test: reproducer for write tool hanging on slow LSP initialize (related to #22872) #22884: "test: reproducer for write tool hanging on slow LSP initialize (related to write tool hangs indefinitely in 1.4.6 (works in 1.4.3) #22872)"

   • test: reproducer for write tool hanging on slow LSP initialize (related to #22872) #22884
   • Related to LSP initialization delays and timeouts

However, PR #23988 (the current PR) appears to be the most recent and focused fix specifically targeting JDTLS and KotlinLS timeout issues. The other PRs may be earlier attempts or related investigations into the same underlying problem.

[github-actions]

This pull request has been automatically closed because it was not updated to meet our contributing guidelines within the 2-hour window.

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[eugenenekh]

@norbu35, could you proceed with this MR? This will be super useful, and we have no moral rights to steal your place among the contributors 😄

[norbu35]

Reopened with the full PR template here: #25649