feat: add acceptance criteria checklist to good first issue template (#997)

Signed-off-by: Aditya <adityashirsatrao007@gmail.com>

Author: adityashirsatrao007

.github/ISSUE_TEMPLATE/01_good_first_issue.yml

@@ -179,6 +179,22 @@ body:
             associate_token_with_account(client, token_id, account_id, account_private_key)
         ```
 
+  - type: textarea
+    id: acceptance-criteria
+    attributes:
+      label: ✅ Acceptance Criteria
+      description: |
+        EDIT OR EXPAND THE CHECKLIST ON WHAT IS REQUIRED TO BE ABLE TO MERGE A PULL REQUEST FOR THIS ISSUE
+      value: |
+        To be able to merge a pull request for this issue, we need:
+        - [ ] **Changelog Entry:** Correct changelog entry (please link to the documentation - [see guide](https://github.com/hiero-ledger/hiero-sdk-python/blob/main/docs/sdk_developers/changelog_entry.md))
+        - [ ] **Signed commits:** commits must be DCO and GPG key signed ([see guide](https://github.com/hiero-ledger/hiero-sdk-python/blob/main/docs/sdk_developers/signing.md))
+        - [ ] **All Tests Pass:** our workflow checks like unit and integration tests must pass
+        - [ ] **Issue is Solved:** The implementation fully addresses the issue requirements as described above
+        - [ ] **No Further Changes are Made:** Code review feedback has been addressed and no further changes are requested
+    validations:
+      required: true
+
   - type: textarea
     id: contribution_steps
     attributes:

CHANGELOG.md

@@ -7,20 +7,24 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 ## [Unreleased]
 
 ### Added
-- Added __str__() to CustomFixedFee and updated examples and tests accordingly.
+
+- Added **str**() to CustomFixedFee and updated examples and tests accordingly.
 - Added a github template for good first issues
 - Added `.github/workflows/bot-assignment-check.yml` to limit non-maintainers to 2 concurrent issue assignments.
-- Added all missing fields to __str__() method and updated `test_tokem_info.py`
+- Added all missing fields to **str**() method and updated `test_tokem_info.py`
 - Add examples/tokens/token_create_transaction_pause_key.py example demonstrating token pause/unpause behavior and pause key usage (#833)
 - Added `docs/sdk_developers/training/transaction_lifecycle.md` to explain the typical lifecycle of executing a transaction using the Hedera Python SDK.
 - Add inactivity bot workflow to unassign stale issue assignees (#952)
+- Added Acceptance Criteria section to Good First Issue template for better contributor guidance (#997)
 - Made custom fraction fee end to end
 
 ### Changed
+
 - Allow `PublicKey` for `TokenUpdateKeys` in `TokenUpdateTransaction`, enabling non-custodial workflows where operators can build transactions using only public keys (#934).
 - Bump protobuf toml to protobuf==6.33.2
 
 ### Fixed
+
 - Fixed inactivity bot workflow not checking out repository before running (#964)
 - Fixed the topic_message_query integarion test
 - good first issue template yaml rendering