Update dependencies and up test coverage

[johndyer2-mh]

Description

This PR updates dependencies, migrates to ESLint 9 and TypeScript 5, adds the standard financial statements API and endpoint coverage docs, and expands tests.

Dependency upgrades

• jose → v6 (^6.1.3); Node engine set to >= 18.0.0.
• TypeScript → v5 (^5.6.3).
• ESLint → v9 (^9.39.2) with flat config: .eslintrc.json removed and eslint.config.js added, using @mft/eslint-config-momentumft.
• Other dev/runtime bumps: form-data, query-string, ramda, chai, mocha, ts-node, c8, husky, and related types/config.

Husky

• Pre-commit: runs npm run lint and npm run build only (no extra shell wrapper).
• Pre-push: runs npm run lint, npm run build, and npm test.

Code and API changes

• Ramda: refactored to named imports (e.g. import { prop, path } from "ramda") in src and examples instead of import * as R.
• Standard financial statements: new module with getStandardFinancialStatements and getStandardFinancialStatement, plus types and schema; wired from src/requests and exported from the client.
• Unauthenticated: added listLegacyConnections (aligned with Identity .well-known/legacy-connections).
• Request/token/auth: updates in get-auth-urls.ts, exchange-code-for-token.ts, request.ts, and tokens.ts for new deps and consistency.

Documentation

• ENDPOINT_COVERAGE.md: document mapping Swagger/API definitions (API Gateway, Identity, CaaS, OSIP) to client methods, including the new standard financial statements and legacy connections, and noting missing client coverage where relevant.

Tests

• Unit tests added: get-auth-urls.unit.ts, exchange-code-for-token.unit.ts, request.unit.ts, requests.unit.ts, requests-modules.unit.ts, tokens.unit.ts (using mocha + test/opts/unit.json where applicable).
• Integration-style test coverage extended for: beneficiaries, consent-history, pay-links, recurring-payments, reseller-check, spending-analysis, standard-financial-statements, standing-orders.
• Test config: test/opts/unit.json added/updated for unit test runs.

Other

• .npmignore: updated so published package contents match the new layout and ignore list.
• .gitignore: one additional entry (e.g. for a local or generated path).

Screenshots, Recordings

N/A – dependency, config, and test changes only; no UI or runtime behaviour changes that need screenshots or recordings.

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Note

Medium Risk
Medium risk due to the Node runtime requirement jump and broad dependency/tooling upgrades, plus new API surface and stronger test gating that may affect CI and consumers.

Overview
Updates the library to a new major release (7.0.0) that bumps the Node engine to >= 20.20.0, upgrades key deps (notably jose v6, TypeScript 5, ESLint 9), and adjusts examples accordingly (e.g., switching jose usage to dynamic import() and refactoring Ramda usage to named imports).

Modernizes tooling by removing .eslintrc.json in favor of eslint.config.js, expanding ignore files (.gitignore, .npmignore), adding .nvmrc, and tightening Husky hooks: pre-commit now runs lint, build, and test:unit, while pre-push runs the full npm test suite across multiple Node versions when nvm is available.

Adds/records API surface and verification artifacts: introduces ENDPOINT_COVERAGE.md, documents the release in CHANGELOG.md, and includes new client endpoints such as getStandardFinancialStatements/getStandardFinancialStatement plus unauthenticated listLegacyConnections, with accompanying expanded unit/integration tests and coverage scripts enforcing 90% thresholds.

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