bug: mentioned files content not always being included

[DanTup]

Version

main 2a00da0

Describe the bug

I mentioned two files, but they were not both included:

The exported chat shows:

"usedContextFiles": [
	{
		"fileName": "c:\\Dev\\Test Projects\\cody_testing\\analysis_options.yaml",
		"source": "user",
		"content": "# This file configures the static analysis results for your project (errors,\n# warnings, and lints).\n#\n# This enables the 'recommended' set of lints from `package:lints`.\n# This set helps identify many issues that may lead to problems when running\n# or consuming Dart code, and enforces writing Dart using a single, idiomatic\n# style and format.\n#\n# If you want a smaller set of lints you can change this to specify\n# 'package:lints/core.yaml'. These are just the most critical lints\n# (the recommended set includes the core lints).\n# The core lints are also what is used by pub.dev for scoring packages.\n\ninclude: package:lints/recommended.yaml\n\n# Uncomment the following section to specify additional rules.\n\n# linter:\n#   rules:\n#     - camel_case_types\n\n# analyzer:\n#   exclude:\n#     - path/to/excluded/files/**\n\n# For more information about the core and recommended set of lints, see\n# https://dart.dev/go/core-lints\n\n# For additional information about configuring this file, see\n# https://dart.dev/guides/language/analysis-options\n"
	},
	{
		"fileName": "README.md",
		"content": "A sample command-line application with an entrypoint in `bin/`, library code\nin `lib/`, and example unit test in `test/`.\n"
	}
],

It includes the README and one of the files I mentioned, but not the other file mentioned.

Expected behavior

Any mentioned file should be included.

Additional context

No response

[DanTup]

With some debugging, I ended up here. We have some code that tries to de-dupe items here, and it's building an ID by calling toString() on a URI, but it's [Object object], so every file mentioned in the chat looks like a dupe and it seems like we'll only keep the first.

(perhaps this URI has been serialised/deserialised somewhere?)