refactor: use exact pubkey matching for whitelist/blacklist

[vikashsiwach]

Description

This PR updates pubkey matching in whitelist and blacklist to use exact match instead of prefix-based matching.

Related Issue

Fixes issue #512

Motivation and Context

Some parts of codebase used startsWith which incorrectly match unrelated pubkeys sharing the same prefix. Based on discussion, the exact matching is more efficient method.

How Has This Been Tested?

-Ran full unit test suite:
npm run test:unit

• Updated existing tests to show exact matching behvior

Types of changes

• Non-functional change (docs, style, minor refactor)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my code changes.
• I added a changeset, or this is docs-only and I added an empty changeset.
• All new and existing tests passed.

[coveralls]

coverage: 71.16% (+0.007%) from 71.153% — vikashsiwach:feat/fix-whitelist-matching into cameri:main

[Copilot]

Pull request overview

Refactors pubkey matching for fee-schedule whitelists and event pubkey whitelist/blacklist enforcement to use exact pubkey matches (instead of prefix-based matching), addressing issue #512.

Changes:

• Replace startsWith-based whitelist/blacklist checks with includes (exact match) in admission-fee and event-acceptance logic.
• Update/add unit tests to assert exact-match behavior (prefix-only entries no longer match).
• Add a changeset documenting the behavior change.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/services/payments-service.ts	Switch fee whitelist matching to exact pubkey equality during admission-fee computation.
src/handlers/event-message-handler.ts	Enforce exact pubkey matching for event whitelist/blacklist checks and admission-fee applicability.
src/controllers/invoices/post-invoice-controller.ts	Apply exact pubkey matching for admission-fee whitelist checks and simplify fee summation.
src/app/static-mirroring-worker.ts	Enforce exact pubkey matching for static mirroring pubkey whitelist/blacklist + admission-fee applicability.
test/unit/services/payments-service.spec.ts	Update whitelist test data and add a regression test ensuring prefix-only whitelist entries do not match.
test/unit/handlers/event-message-handler.spec.ts	Update blacklist/whitelist tests to reflect exact-match behavior.
.changeset/release-whitelist-exact-match.md	Declare the release note for exact-match behavior change.

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[cameri]

Please address copilot comments.

[vikashsiwach]

Please address copilot comments.

Addressed all the comments and updated the changeset to major