bug: -ignoreQuery breaks local file loading via localfile.internal pseudo-URL

[platonai]

Summary

Loading a local file through the internal pseudo-URL http://localfile.internal?path=<base64url(path)> (produced by URLUtils.pathToLocalURL) breaks when -ignoreQuery (i.e. LoadOptions.ignoreUrlQuery) is set.

Root cause

• URLUtils.pathToLocalURL encodes the file path in the query parameter path: http://localfile.internal?path=<base64>.
• CombinedUrlNormalizer ends with URLUtils.normalizeOrNull(normURL, options.ignoreUrlQuery), and URLUtils.normalize(url, ignoreUrlQuery=true) removes the whole query via URIBuilder.removeQuery().
• The driver's local-file branch still fires (isLocalFile only checks the http://localfile.internal prefix), but PulsarWebDriver.openLocalFile -> URLUtils.localURLToPath then throws IllegalArgumentException: Missing query parameter 'path' in local file url: http://localfile.internal.

Repro (expected)

val url = URLUtils.pathToLocalURL(path)
session.load(url, "-refresh -ignoreQuery")   // throws / fails to load

Suggested fixes (pick one)

1. Preserve the path parameter for localfile.internal URLs during normalization even when ignoreUrlQuery is set.
2. Move the base64-encoded path from the query into the URL path segment (http://localfile.internal/<base64>), making it immune to query stripping. This changes URLUtils.pathToLocalURL/localURLToPath in the upstream pulsar-common dependency.
3. If neither is feasible, at least document the conflict and validate in normalize so the error is clear.

References

• pathToLocalURL/localURLToPath: pulsar-common dependency (ai.platon.pulsar.common.urls.URLUtils)
• CombinedUrlNormalizer: browser4-core/browser4-skeleton/src/main/kotlin/ai/platon/pulsar/skeleton/common/urls/CombinedUrlNormalizer.kt
• Driver local-file branch: pulsar-browser dependency (PulsarWebDriver.openLocalFile)
• Existing usage test: browser4-tests/pulsar-it-tests/src/test/kotlin/ai/platon/pulsar/basic/session/PulsarSessionTests.kt