chore: improve diff tool docs and add diff files to gitignore

[lumtis]

Summary by CodeRabbit

• Documentation

  • Improved contract-diff documentation with clearer usage instructions, condensed tool guidance, and examples for comparing outputs.

• Chores

  • Updated ignore configuration to add contract diff and generated type outputs and adjusted formatting of ignore entries.

[coderabbitai]

📝 Walkthrough

Walkthrough

Adds ignore entries for generated artifact directories and refines contract-diff documentation: updates an example export command, tightens output formatting, and replaces per-tool diff examples with consolidated tool guidance and a vimdiff example.

Changes

Cohort / File(s)	Change Summary
Build configuration \.gitignore	Added contract-diffs/ and typechain-types/ to ignores; adjusted newline/formatting around the remappings.txt entry.
Documentation scripts/contractDiff/readme.md	Rewrote usage example to show an export ETHERSCAN_API_KEY=... command; tightened Output section formatting with inline code blocks; replaced explicit per-tool diff bullets with a consolidated tools list and added an inline vimdiff usage example.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Focus review on .gitignore to confirm intended directories and formatting.
• Skim scripts/contractDiff/readme.md for clarity and accuracy of the example command and diff tool instructions.

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title Check	✅ Passed	The pull request title "chore: improve diff tool docs and add diff files to gitignore" directly and accurately summarizes the two main changes in the changeset: updates to the diff tool documentation in scripts/contractDiff/readme.md and the addition of new ignore entries to .gitignore. The title is concise, clear, and specific enough that a teammate scanning the commit history would immediately understand the primary purpose of the changes. The conventional commit prefix "chore:" is appropriate for documentation and configuration updates.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch chore/diff-tool-chnages

---

📜 Recent review details

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Disabled knowledge base sources:

• Linear integration is disabled by default for public repositories

You can enable these sources in your CodeRabbit configuration.

📥 Commits

Reviewing files that changed from the base of the PR and between 3a7bab5 and 290d235.

📒 Files selected for processing (1)

• scripts/contractDiff/readme.md (2 hunks)

🧰 Additional context used

📓 Path-based instructions (1)

scripts/**

⚙️ CodeRabbit configuration file

Review the Hardhat scripts for best practices.

Files:

• scripts/contractDiff/readme.md

🪛 markdownlint-cli2 (0.18.1)

scripts/contractDiff/readme.md

28-28: Unordered list indentation
Expected: 2; Actual: 4

(MD007, ul-indent)

---

29-29: Unordered list indentation
Expected: 2; Actual: 4

(MD007, ul-indent)

---

34-34: Unordered list indentation
Expected: 0; Actual: 2

(MD007, ul-indent)

---

35-35: Unordered list indentation
Expected: 0; Actual: 2

(MD007, ul-indent)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (3)

• GitHub Check: test
• GitHub Check: slither
• GitHub Check: generate

🔇 Additional comments (1)

scripts/contractDiff/readme.md (1)

15-15: LGTM! The export command update makes the usage instruction clearer and more actionable.

---

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.}

[coderabbitai]

Actionable comments posted: 1

📜 Review details

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Disabled knowledge base sources:

• Linear integration is disabled by default for public repositories

You can enable these sources in your CodeRabbit configuration.

📥 Commits

Reviewing files that changed from the base of the PR and between 556ed43 and 3a7bab5.

📒 Files selected for processing (2)

• .gitignore (1 hunks)
• scripts/contractDiff/readme.md (2 hunks)

🧰 Additional context used

📓 Path-based instructions (1)

scripts/**

⚙️ CodeRabbit configuration file

Review the Hardhat scripts for best practices.

Files:

• scripts/contractDiff/readme.md

🪛 markdownlint-cli2 (0.18.1)

scripts/contractDiff/readme.md

28-28: Unordered list indentation
Expected: 2; Actual: 4

(MD007, ul-indent)

---

29-29: Unordered list indentation
Expected: 2; Actual: 4

(MD007, ul-indent)

---

34-34: Unordered list indentation
Expected: 0; Actual: 2

(MD007, ul-indent)

---

35-35: Unordered list indentation
Expected: 0; Actual: 2

(MD007, ul-indent)

---

38-38: Fenced code blocks should have a language specified

(MD040, fenced-code-language)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (3)

• GitHub Check: generate
• GitHub Check: test
• GitHub Check: slither

🔇 Additional comments (1)

.gitignore (1)

47-51: LGTM!

The additions appropriately ignore generated directories: contract-diffs/ (output from the diff script) and typechain-types/ (TypeChain generated types). These align with the PR's intent to avoid committing build artifacts.