fix: speed up gopls lint with parallel processing

The gopls check was slow (~3.5 minutes) because it processed all ~2800
Go source files sequentially. This change:

1. Installs gopls once instead of using 'go run' each time
2. Uses xargs with parallel execution (-P nproc) to process files
   in batches of 100 across all available CPU cores

This reduces the lint time from ~3.5 minutes to ~1 minute (about 68%
faster).

Closes #121

Co-Authored-By: Greg Slepak <contact@taoeffect.com>

Author: devin-ai-integration[bot]

tools/lint-go-gopls.sh

@@ -7,11 +7,18 @@ IGNORE_PATTERNS=(
   "is deprecated" # TODO: fix these
 )
 
+# Install gopls if not already installed, then use the installed binary for
+# faster execution. Using 'go run' each time adds overhead.
+"$GO" install "$GOPLS_PACKAGE" 2>/dev/null
+GOPLS_BIN=$("$GO" env GOPATH)/bin/gopls
+
 # lint all go files with 'gopls check' and look for lines starting with the
 # current absolute path, indicating a error was found. This is necessary
 # because the tool does not set non-zero exit code when errors are found.
 # ref: https://github.com/golang/go/issues/67078
-ERROR_LINES=$("$GO" run "$GOPLS_PACKAGE" check -severity=warning "$@" 2>/dev/null | grep -E "^$PWD" | grep -vFf <(printf '%s\n' "${IGNORE_PATTERNS[@]}"));
+# Use xargs with parallel execution (-P) to speed up checking many files.
+# Each batch of 100 files is processed in parallel across available cores.
+ERROR_LINES=$(printf '%s\n' "$@" | xargs -P "$(nproc)" -n 100 "$GOPLS_BIN" check -severity=warning 2>/dev/null | grep -E "^$PWD" | grep -vFf <(printf '%s\n' "${IGNORE_PATTERNS[@]}"));
 NUM_ERRORS=$(echo -n "$ERROR_LINES" | wc -l)
 
 if [ "$NUM_ERRORS" -eq "0" ]; then