Replace hasha library with node built-ins

[GrahamCampbell]

No description provided.

[Copilot]

Pull request overview

This PR removes the external hasha dependency and replaces its usage with a small internal cache-hashing helper built on Node’s built-in crypto/fs APIs, keeping the existing cache-hash contract and adding tests to lock it in.

Changes:

• Add src/utils/cache-hash.js to compute the cache hash using Node built-ins (streaming file reads + crypto hashing).
• Update the Framework component to use the new helper and remove hasha usage.
• Add/extend unit tests to validate the cache-hash contract and deploy-skip behavior; remove hasha from package.json.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/utils/cache-hash.js	Introduces Node-based implementation of the existing cache-hash contract.
components/framework/index.js	Switches framework caching logic to the new utility and drops hasha usage.
test/unit/src/utils/cache-hash.test.js	Adds focused tests to lock down cache-hash semantics (sorting, delimiter, binary, empty matches, read failures).
test/unit/components/framework/index.test.js	Adds tests covering deploy skip when unchanged and cache-hash refresh when inputs change.
package.json	Removes hasha from dependencies.

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