Summary

• Adds testGenerateHashesWithCqueryStreamedProto to E2ETest.kt, an explicit end-to-end test that exercises generate-hashes --useCquery against the lightweight distance_metrics workspace. This guards the AnalysisProtosV2.CqueryResult.parseDelimitedFrom streaming loop in BazelQueryService.query() (Bazel 7.0.0+).
• The underlying fix for #219 (streamed_proto support for cquery) already landed in Use --output=streamed_proto and --output_file if supported #278; existing cquery e2e tests cover bzlmod / multi-platform fixtures but none isolate the simple --useCquery codepath.
• Bumps version 19.0.0 → 19.0.1 in MODULE.bazel and README.md.

Test plan

• bazel test //cli:E2ETest --test_filter='com.bazel_diff.e2e.E2ETest#testGenerateHashesWithCqueryStreamedProto' passes locally on Bazel 8.5.1
• CI green

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