docs: PR self-review checklist (#645) (#687)

Signed-off-by: Rishabh Ranjan Singh <rishabhrsingh19@gmail.com>

Author: Rishabh1925

CHANGELOG.md

@@ -26,6 +26,8 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 
 - fix: Replaced `collections.namedtuple` with `typing.NamedTuple` in `client.py` for improved type checking.
 - chore: Refactored examples/custom_fee.py into three separate example files.
+- Expanded `docs/sdk_developers/checklist.md` with a self-review guide for all pull request submission requirements (#645).
+
 
 
 ### Fixed

docs/sdk_developers/checklist.md

@@ -1,6 +1,12 @@
-# Pull Request Checklist
+# Developer PR Submission Checklist
 
-Before submitting your PR, verify:
+## Table of Contents
+- [Prior to Submission](#1-prior-to-submission)
+- [Post-Submission Verification](#2-post-submission-verification)
+
+---
+
+## 1. Prior to Submission 
 
 ## Required ✅
 
@@ -16,13 +22,36 @@ Before submitting your PR, verify:
 - [ ] Verified GitHub shows commits as "Verified"
 
 ## Don't Do This ❌
+Once you have opened your Pull Request (PR), you must double-check the automated workflow results **BEFORE** requesting a formal review.
 
 - [ ] Work on the `main` branch
 - [ ] Mix multiple issues in one PR
 - [ ] Skip changelog updates
 - [ ] Force push without `--force-with-lease`
 - [ ] Include sensitive information
 
+## 2. Post-Submission Verification
+
+Once you have opened your Pull Request (PR), you must double-check the automated workflow results **BEFORE** requesting a formal review.
+
+### How to Verify All Requirements on GitHub
+
+Navigate to your PR page on GitHub and use the **Checks** and **Commits** tabs to verify the following:
+
+| Requirement | GitHub Location | Status to Look For | Action if Failed |
+| :--- | :--- | :--- | :--- |
+| **Commit Signature** | **Commits Tab** | Must show **"Verified"** (Green badge) | See **[Signing Guide](signing.md)** for how to set up GPG and fix unverified commits. |
+| **DCO Check** | **Checks Tab** | The "DCO" or "License" check must show a **Green Checkmark**. | See **[Signing Guide](signing.md)** to ensure your commits have the DCO sign-off (`-s`). |
+| **Tests Pass (CI)** | **Checks Tab** (Workflows like 'Integration Tests') | All required tests must show a **Green Checkmark**. | View the logs for the failing check to debug the error locally. |
+| **Changelog Formatting** | **Checks Tab** ('PR Formatting / Changelog Check') | Must show a **Green Checkmark**. | Correct the `CHANGELOG.md` and force push. See **[Changelog Guide](changelog_entry.md)**. |
+
+### The Files Changed Tab
+
+The **Files Changed Tab** shows the exact **difference** between your branch and the `main` branch. This is the key document maintainers use for review.
+**Your Goal:** Submitted PRs should have a diff that achieves the issue and meets all items in the pre-submit checklist.
+
+---
+
 ## Need Help?
 
 - **Signing issues?** → [Signing Guide](signing.md)