feat: add issue reminder bot

[prajeeta15]

Description:

Add automated reminder for assigned issues with no linked pull requests

This PR introduces a new ReminderBot workflow that automatically notifies contributors when an issue has been assigned for 7+ days but no pull request has been created. This helps ensure that issues do not remain assigned indefinitely without progress.

What’s included:

• Added .github/scripts/issue_reminder_no_pr.sh
  • Scans all open issues with assignees
  • Checks if 7+ days have passed since the assignment
  • Ensures there are no open PRs linked to the issue
  • Posts the ReminderBot message if criteria are met
  • Prevents duplicate reminders by detecting prior bot comments
• Added .github/workflows/bot-issue-reminder-no-pr.yml
  - Runs daily at 10:00 UTC
  - Supports manual triggering via workflow_dispatch
  - Uses GITHUB_TOKEN with appropriate permissions

The reminder message posted is:

"Hi, this is ReminderBot. This issue has been assigned but has had no pull request created. Are you still planning on working on the issue?
From the Python SDK Team"

Fixes #951

Notes for reviewer:

• The workflow follows the existing bot architecture used across the repository. Script behavior can be tested locally using a personal access token and the GitHub API.

[github-actions]

Hi, this is MergeConflictBot.
Your pull request cannot be merged because it contains merge conflicts.

Please resolve these conflicts locally and push the changes.

To assist you, please read:

• Resolving Merge Conflicts
• Rebasing Guide

Thank you for contributing!

From the Hiero Python SDK Team

[exploreriii]

Request review if available @hiero-ledger/hiero-sdk-python-triage

[Akshat8510]

Hi @prajeeta15
looking great. If possible, could you dry-run it locally once just to be extra sure?

[exploreriii]

Hi @prajeeta15
Have you tested this on a fork?
Please follow https://github.com/hiero-ledger/hiero-sdk-python/blob/main/docs/sdk_developers/training/testing_forks.md

Please ensure it posts on your fork issues for the test, then send a link of the bot working correctly
you'll need to enable issues on your fork by clicking inside settings

[prajeeta15]

I tested on my fork by following https://github.com/hiero-ledger/hiero-sdk-python/blob/main/docs/sdk_developers/training/testing_forks.md

[exploreriii]

Hi @prajeeta15
Would you mind adding some more explicit safety nets?
Otherwise happy to approve this

[exploreriii]

Hi @prajeeta15 what do you think? Should we ensure the DRY run variable works as intended?
Its not too important right now, I am the one that can trigger the script and know what it does..but would be nice to have as a guard for the future

[aceppaluni]

@prajeeta15 This is great work!

I agree with the point about the DRY_RUN variable. The current behavior is technically correct, but making it explicit would improve clarity for future maintainers.

I don’t see this as blocking, but explicitly passing DRY_RUN=false on scheduled runs or clearly documenting the accepted values would make the intent easier to understand.

Otherwise, the script and workflow look solid to me.

[exploreriii]

Hi @prajeeta15
I am unable to merge this - you have removed other people's changelog entries
https://github.com/hiero-ledger/hiero-sdk-python/pull/1027/changes#diff-9e7a22da35715c25129d7199f2530a872c4ad3d119722caea17a5ff57e570aec

I would recommend to copy in the code of the current main changelog to your branch, then add in just your change :)
While you do that, could you change the trigger time to 1pm
You use quite a few API calls, and since we have other bots, this may cause problems

Please first make sure to fetch from upstream and push to your origin main as described in rebasing.md

Thanks

[exploreriii]

Issue is outstanding, please look at your changelog submission here
https://github.com/hiero-ledger/hiero-sdk-python/pull/1027/changes#diff-9e7a22da35715c25129d7199f2530a872c4ad3d119722caea17a5ff57e570aec

merging will not resolve this using the editor, you must copy in the changelog i think

[prajeeta15]

@exploreriii fixed the changelog.md issue. I might have missed them during "resolve conflicts"

[github-actions]

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[exploreriii]

Excellent work @prajeeta15 !!!!! and thank you!!!