Handle error when friends limit (10000) is reached

[konard]

Summary

This PR implements automatic handling of the VK friends limit (10,000 friends) to prevent errors and maintain smooth operation of the friend request automation.

Problem Addressed

When the friends limit is reached, the VK API returns error code 1 with "Unknown error occurred" when trying to accept friend requests. The automation would continue trying to accept requests without success.

Solution

State Management:

• Tracks current friends count in friends-state.json file
• Updates count before and after each operation cycle

Limit Detection & Handling:

• Checks friends count before accepting requests
• Uses 50-friend safety margin (accepts only when count < 9,950)
• When limit reached, automatically:
  1. Cancels all outgoing friend requests
  2. Deletes inactive friends (not seen in 3 days) in batches
  3. Skips accepting new requests until below limit

Implementation Details:

• Application/getFriendsCount.js - VK API method to get current friends count
• get-friends-count.sh - Shell wrapper for friends count retrieval
• manage-friends-limit.sh - Main logic for limit detection and cleanup
• Updated Application/acceptAllFriendRequests.js to return structured response
• Integrated into do-all.sh main automation loop

Testing:

• Created experiments/test-friends-limit-logic.sh to validate implementation
• All tests passing ✓

Files Changed

• .gitignore - Added friends-state.json
• Application/acceptAllFriendRequests.js - Better error handling and return structure
• Application/getFriendsCount.js - New: Get current friends count
• do-all.sh - Integrated friends limit management
• get-friends-count.sh - New: Friends count retrieval script
• manage-friends-limit.sh - New: Main friends limit management logic
• experiments/test-friends-limit-logic.sh - New: Test script

Fixes #10

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