docs: extended relayer docs

[benceharomi]

Summary by CodeRabbit

• Documentation

  • Restructured Relayer setup into clear prerequisites and a step‑by‑step configuration and deployment flow, including instructions to prepare configuration and environment files, build contracts, apply migrations, and start services.

• Chores

  • Simplified Docker Compose by removing the top‑level version declaration; service definitions and behavior remain unchanged.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

Removed the top-level version: '3.8' from docker-compose.yaml. Rewrote packages/relayer/README.md into prerequisites and a numbered setup: build contracts, create/populate config.json, place .ic.pem, configure .env, start services with docker compose up --build -d, then run sqlx migrate run.

Changes

Cohort / File(s)	Summary
Compose file docker-compose.yaml	Removed the top-level version: '3.8' line; service, volume and other definitions unchanged.
Relayer documentation packages/relayer/README.md	Major rewrite: replaced "Build" with "Prerequisites" (docker compose, sqlx-cli), added numbered steps to build contracts via yarn workspace, copy config.example → config.json and populate chains.<network>.privateKey, prover.url/apiKey, icp.wallet_canisterId, place .ic.pem in packages/relayer/, copy/edit .env from .env.example, start services (docker compose up --build -d), and run migrations (sqlx migrate run --source ./packages/relayer/migrations).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• docs: extended relayer docs #149 — Applies the same removal of the top-level version in docker-compose.yaml and similar README restructuring.

Suggested reviewers

• zkfriendly

Poem

🐇 I nibbled notes and smoothed each line,
Tweaked the steps so setups now align.
Contracts built, configs snug in place,
Docker wakes — migrations join the chase.
A floppy-eared cheer for tidy pace!

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	No pull request description was provided by the author, missing all required template sections including summary, type of change, testing details, and checklist items.	Add a complete pull request description following the template, including a summary of changes, type of change classification, testing verification, and completion checklist.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'docs: extended relayer docs' is directly related to the changeset, which extends the relayer documentation with new setup procedures and prerequisites.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

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[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@packages/relayer/README.md`:
- Line 35: Update the README text that currently reads "In the the repository
root, copy and edit the `.env` file:" by removing the duplicate word "the" so it
reads "In the repository root, copy and edit the `.env` file:"; edit the line
containing that exact phrase in the README.md to correct the typo.

🧹 Nitpick comments (3)

packages/relayer/README.md (3)

31-31: Clarify the location of the .ic.pem file.

The term "relayer root" is ambiguous. Line 20 refers to "relayer package directory (./packages/relayer)" — please clarify whether "relayer root" means the same location or if it refers to the repository root.

📝 Suggested clarification

-> Note: do not forget to place the `.ic.pem` file in the relayer root
+> Note: do not forget to place the `.ic.pem` file in the relayer package directory (`./packages/relayer`)

---

43-47: Specify the working directory for the cargo build command.

Unlike Steps 2, 3, and 5, this step doesn't specify where to run cargo build --release. Users may be unclear whether to run it from the repository root or the relayer package directory (./packages/relayer).

📝 Suggested clarification

 ### 4. Build relayer
+
+From the relayer package directory (`./packages/relayer`):
 
 ```bash
 cargo build --release

---

59-63: Specify the working directory and clarify the database configuration.

This step has two clarity issues:

1. The working directory is not specified. Based on the pattern in other steps, please clarify whether this should be run from the repository root.
2. The hardcoded DATABASE_URL contains credentials (relayer:relayer_password) that may need to align with the .env file configured in Step 3. Please clarify whether these should match or if they serve different purposes.

📝 Suggested clarification

 ### 6. Apply the migrations
+
+From the repository root:
 
 ```bash
 DATABASE_URL=postgres://relayer:relayer_password@localhost:5432/relayer sqlx migrate run

Additionally, consider adding a note if the DATABASE_URL credentials should match the .env configuration, or explain why they differ.

[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@packages/relayer/README.md`:
- Around line 28-29: The README references a non-existent prover setup guide
link in the bullet for `prover.*`; fix by either updating the link target in the
`prover.*` bullet to the correct existing documentation location (replace the
broken `../prover/` URL with the actual relative path or URL to the prover
guide) or add a new README.md in the prover package so `../prover/` resolves;
ensure the `prover.*` bullet text remains accurate after the change.

[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@packages/relayer/README.md`:
- Around line 59-63: The README's migration step is ambiguous: instruct the
reader to run sqlx migrate from the relayer package or pass the migrations
source explicitly; update the step that shows the sqlx migrate run command
(reference the sqlx migrate run command and the migrations directory at
packages/relayer/migrations) to either (a) tell users to cd into
packages/relayer before running DATABASE_URL=... sqlx migrate run or (b) use
DATABASE_URL=... sqlx migrate run --source ./packages/relayer/migrations so sqlx
can find the migrations without changing directories.