Add readme for h3 example

[m2nsp]

Summary

• Add examples/h3/README.md to document the H3 example.

Fixes #882

Test plan

• hongdown --check examples/h3/README.md

AI disclosure

This change was written with assistance from ChatGPT (GPT-5.5-mini), reviewed and verified by me.

[netlify]

✅ Deploy Preview for fedify-json-schema canceled.

Name	Link
🔨 Latest commit	05e3a6c
🔍 Latest deploy log	https://app.netlify.com/projects/fedify-json-schema/deploys/6a79e4afd210040008106576

[coderabbitai]

Caution

Review failed

An error occurred during the review process. Please try again later.

📝 Walkthrough

Walkthrough

Added a README for the Fedify–H3 integration example. The README describes the example and provides local setup, startup, and actor URL instructions.

Changes

H3 example documentation

Layer / File(s)	Summary
Document H3 example setup examples/h3/README.md	Adds a description and five steps to clone the repository, enter the example directory, install dependencies with pnpm, start the Deno server, and access an actor URL.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related issues

• Issue 884 — Documents the same examples/h3 integration in a different README.

Possibly related PRs

• fedify-dev/fedify#975 — Adds the H3 integration example to the examples index.

Suggested reviewers: 2chanhaeng

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the addition of documentation for the H3 example.
Description check	✅ Passed	The description accurately explains the README addition and its validation command.
Linked Issues check	✅ Passed	The README covers the H3 example description, setup steps, run command, and actor URL lookup required by issue #882.
Out of Scope Changes check	✅ Passed	The changes are limited to the README requested for the H3 example.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

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.}

[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@examples/h3/README.md`:
- Around line 13-23: Update the setup instructions in the h3 README so the
example-directory command enters the cloned repository first, using cd
fedify/examples/h3 or an equivalent preceding cd fedify step before the existing
examples/h3 path.
- Around line 37-41: Update the actor URL code fence in the README instructions
to include an appropriate language identifier on its opening fence, resolving
the MD040 warning while leaving the URL content unchanged.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 966f2b23-94eb-49a3-b3bd-435aee853162

📥 Commits

Reviewing files that changed from the base of the PR and between 15ad151 and 615e11b.

📒 Files selected for processing (1)

• examples/h3/README.md

[2chanhaeng]

I think the example flow should be clearer.

1. Clone the repository
2. Go to the directory of the cloned repository
3. Trust and install dependencies using mise
4. Go to the h3 example directory
5. Open the server using Deno
6. Lookup an actor using @fedify/cli