[tools] gopls/internal/mcp: add a symbol search tool

[Gopher Robot (Gerrit)]

Gopher Robot submitted the change

Change information

Commit message:

gopls/internal/mcp: add a symbol search tool

Add a tool that wraps workspace symbol search.
Also, factor out text content handling.

Also fix a build breakage due to semantic merge conflict.

For golang/go#73580

Change-Id: I42a0f2a5445f5492506ff5a07778a310ed485c54

Reviewed-on: https://go-review.googlesource.com/c/tools/+/686535

Auto-Submit: Robert Findley <rfin...@google.com>

LUCI-TryBot-Result: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Reviewed-by: Hongxiang Jiang <hxj...@golang.org>

Reviewed-by: Madeline Kalil <mka...@google.com>

Files:

• M gopls/internal/cmd/mcp.go
• M gopls/internal/mcp/context.go
• M gopls/internal/mcp/diagnostics.go
• M gopls/internal/mcp/file_metadata.go
• M gopls/internal/mcp/mcp.go
• M gopls/internal/mcp/references.go
• A gopls/internal/mcp/search.go
• M gopls/internal/mcp/workspace.go
• M gopls/internal/mcp/workspace_diagnostics.go
• A gopls/internal/test/marker/testdata/mcptools/search.txt

Change size: M

Delta: 10 files changed, 152 insertions(+), 29 deletions(-)

Branch: refs/heads/master

Submit Requirements:

• Code-Review: +2 by Madeline Kalil, +2 by Hongxiang Jiang
• TryBots-Pass: LUCI-TryBot-Result+1 by Go LUCI

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Gerrit

Gerrit-MessageType: merged

Gerrit-Project: tools

Gerrit-Branch: master

Gerrit-Change-Id: I42a0f2a5445f5492506ff5a07778a310ed485c54

Gerrit-Change-Number: 686535

Gerrit-PatchSet: 3

Gerrit-Owner: Robert Findley <rfin...@google.com>

Gerrit-Reviewer: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Gerrit-Reviewer: Gopher Robot <go...@golang.org>

Gerrit-Reviewer: Hongxiang Jiang <hxj...@golang.org>

Gerrit-Reviewer: Madeline Kalil <mka...@google.com>

Gerrit-Reviewer: Robert Findley <rfin...@google.com>