Fix https breakage of resolved ips

[ospfranco]

Addresses #182

By also adding undici as a dep we now break other runtimes. This PR also tries to add a new entrypoint /mobile that does not require undici and skips all the DNS protection code because mobile runtimes do not run localhost servers, so they should be redundant

[Copilot]

Pull request overview

This PR addresses the HTTPS/TLS regression introduced by DNS-rebinding hardening when resolveDNSHost returns an IP, and restructures the package into explicit Node vs mobile entrypoints to avoid bundler/runtime breakage from Node-only dependencies.

Changes:

• Introduces a Node-specific entrypoint that pins HTTPS connections to the validated IP at the connection layer (via undici dispatcher) while preserving the original hostname for SNI/TLS.
• Adds a /mobile entrypoint that avoids undici/Node-only dependencies and omits resolveDNSHost.
• Updates package exports/build/test tooling to support the new entrypoints and migrate tests to bun:test.

Reviewed changes

Copilot reviewed 14 out of 17 changed files in this pull request and generated 11 comments.

Show a summary per file

File	Description
tsconfig.json	Switches TS ambient types to Bun (impacts editor/test typing).
tsconfig.build.json	Adds a build-specific TS config excluding tests.
shared.ts	Extracts shared parsing/types used by both entrypoints.
README.md	Documents the new entrypoints and clarifies HTTPS hostname/SNI behavior.
package.json	Adds exports for /node and /mobile, adds undici, changes scripts/engines/version.
node.ts	New Node entrypoint implementing dispatcher-based HTTPS pinning.
mobile.ts	New mobile/browser-safe entrypoint without Node-only deps or DNS pinning.
mise.toml	Adds Bun tool configuration.
jest.config.js	Removes Jest configuration (tests moved off Jest).
index.ts	Makes the default entrypoint re-export the Node entrypoint.
bun.lock	Updates lockfile for Bun + new dependencies.
bump-version.sh	Removes version bump script.
.github/workflows/tests.yml	Updates CI setup to use mise and run Bun tests.
tests/mobile.spec.ts	Adds tests for the /mobile entrypoint behavior and dependency constraints.
tests/index.spec.ts	Updates tests for Bun and adds coverage for the HTTPS pinning regression.
tests/fixtures/verify-undici-pinning.node.cjs	Adds a Node-only fixture to verify undici lookup override behavior.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.