Feat/squashed 2026 07 06

[UnArbosFour]

Description

Copy of PR #2832.

All in one:

• Handle swap errors in chain buys #2753
• Custom dust collection type in subtensor #2707
• Add min_childkey_take_per_subnet hyperparameter #2734
• Hotfix/propagate hotkey swap conviction #2736
• Make setting ck take extrinsics payable #2750
• Handle balancer misbalance on injection #2758
• Add eco-tests protecting Mentat indexer storage reads #2818

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Other (please describe):

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have run ./scripts/fix_rust.sh to ensure my code is formatted and linted correctly
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

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Project	Deployment	Actions	Updated (UTC)
subtensor	Error		Jul 10, 2026 5:35am