test: update test suite for fiber architecture

[MarcelOlsen]

Add fiber-specific tests (rendering, reconciliation, hooks, effects,
commit, context, events, portals, memo, refs, errors, internals).
Update existing integration tests for fiber-based API. Remove old
reconciler tests.

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on this repository. Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Repository UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: b4798a02-b6e6-443c-80b4-a5b04869ea79

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[MarcelOlsen]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• test: update test suite for fiber architecture #47 👈 (View in Graphite)
• feat: switch public API to fiber architecture #46
• feat: add SSR hydration and resumability support #45
• feat: add work loop and fiber module index #44
• feat: update event system for fiber architecture #43
• feat: add commit phase (commitWork + commitRoot) #42
• feat: add render phase (beginWork + completeWork) #41
• feat: add fiber-based hook implementations #40
• feat: add child reconciliation with key-based diffing #39
• feat: add fiber tree utilities and effect system #38
• feat: add fiber factory functions #37
• feat: add fiber scheduler and work-in-progress tree management #36
• feat: add lane-based priority system #35
• feat: add fiber type guards and assertion utilities #34
• feat: add fiber type definitions and update core types #33
• chore: remove example app and update configs #32
• master

This stack of pull requests is managed by Graphite. Learn more about stacking.