chore: (cy.prompt) add manifest for all of the cloud delivered files

[ryanthemanuel]

Additional details

The general idea behind the manifest is:

• We add a manifest to the cloud delivered bundles containing each file and a sha-256 hash for that file
• At upload time, we sign the manifest using our encryption key and stores it alongside other bundle information
• When requested from the app, we send the manifest signature along as a header
• In the app at download time, we read the manifest into memory and then validates it using the signature
• The in-memory manifest is then used to validate every file that is read from the bundle to ensure it has not been modified

Steps to test

How has the user experience changed?

PR Tasks

• Have tests been added/updated?
• Has a PR for user-facing changes been opened in cypress-documentation?
• Have API changes been updated in the type definitions?

[cypress]

cypress    Run #63438

Run Properties:   Passed #63438  •  16cdd322e6: refactor

Project	cypress
Branch Review	ryanm/chore/add-manifest-for-cy-prompt
Run status	Passed #63438
Run duration	18m 52s
Commit	16cdd322e6: refactor
Committer	Ryan Manuel
View all properties for this run ↗︎

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Test results
Failures	0
Flaky	12
Pending	1232
Skipped	3
Passing	32204
View all changes introduced in this branch ↗︎

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Warning

Partial Report: The results for the Application Quality reports may be incomplete.

UI Coverage  45.71%
Untested elements	191
Tested elements	165

Accessibility  92.89%
Failed rules	3 critical   9 serious   2 moderate   2 minor
Failed elements	686

[Copilot]

Pull Request Overview

This PR introduces a manifest for cloud-delivered cy prompt bundles to ensure file integrity through SHA-256 hashing and signature verification. It adds new functions for obtaining and validating cy prompt file sources, updates the encryption and API layers to handle manifest and signature headers, and extends test coverage to verify these changes.

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
scripts/binary/binary-sources.js	Introduced getCyPromptFileSource and validateCyPromptFile to handle cy prompt files similar to studio files.
scripts/after-pack-hook.js	Incorporated cy prompt file processing into the after-pack hook by writing and validating the updated files.
packages/types/src/cy-prompt/cy-prompt-server-types.ts	Extended type definitions with manifest information and verifyHash functionality.
packages/server/test/unit/cloud/cy-prompt/*	Added and updated tests to account for manifest presence, signature validation, and error conditions.
packages/server/lib/cloud/encryption.ts	Modified verifySignature to handle BinaryLike inputs to support manifest validation.
packages/server/lib/cloud/cy-prompt/ensure_cy_prompt_bundle.ts	Implemented manifest file reading and signature verification with appropriate error handling.
packages/server/lib/cloud/cy-prompt/CyPromptManager.ts	Updated setup to pass manifest data and a verifyHash callback to the cy prompt server.
packages/server/lib/cloud/cy-prompt/CyPromptLifecycleManager.ts	Refactored logic to load and validate the manifest, including checking for the server script’s hash.
packages/server/lib/cloud/api/cy-prompt/get_cy_prompt_bundle.ts	Added logic to retrieve and verify the manifest signature from response headers.
packages/driver/src/cypress/error_messages.ts	Updated error message formatting to handle cases where error codes may be undefined.