Feat/squashed 2026 07 06

[UnArbosFour]

Motivation

This integration PR consolidates the fixes and features previously collected in #2832, including work from #2753, #2707, #2734, #2736, #2750, #2758, and #2818. It prepares the combined runtime changes for devnet-ready while preserving accounting invariants and adding regression coverage.

Changes

• Keep Subtensor total issuance synchronized when balance dust is removed.
• Route TAO transfers through the accounting-aware transfer helper.
• Preserve protocol TAO and alpha emissions in liquidity reservoirs when balancer limits prevent immediate activation.
• Materialize and clear reservoir liquidity correctly during subnet dissolution.
• Correct excess-TAO rollback when a protocol swap fails.
• Update lock-swap migration handling and reverse-index maintenance.
• Charge transaction fees for delegate take updates.
• Correct hotkey-swap weight accounting and ownership validation.
• Add Mentat/indexer runtime API coverage.

Files of interest

• pallets/subtensor/src/coinbase/
• pallets/subtensor/src/migrations/
• pallets/subtensor/src/subnets/dissolution.rs
• pallets/swap/src/pallet/
• runtime/src/lib.rs
• runtime/tests/balances_dust.rs
• eco-tests/src/tests_mentat_indexer.rs

Behavioral and migration impact

Protocol emissions that cannot immediately become price-active are retained in per-subnet reservoirs and retried later instead of being omitted from accounting. Dust removal now updates Subtensor issuance alongside Balances issuance. Existing one-shot issuance and hotkey-lock repair migrations are extended for the corrected state transitions.

The runtime spec_version is bumped from 427 to 428.

Testing

The PR adds targeted unit and runtime tests covering dust reaping, order-swap and leasing transfers, failed excess-TAO swaps, liquidity reservoir activation and cleanup, subnet dissolution, migration indexing, delegate fee metadata, hotkey ownership checks, and Mentat/indexer runtime APIs. The source PR reports that formatting, linting, and existing unit tests pass locally.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
subtensor	Error		Jul 10, 2026 3:57pm

[github-actions]

eco-tests changed — indexer review required

This PR modifies files under eco-tests/. and may affect downstream indexing.
cc @evgeny-s — please review manually

Changed files

• eco-tests/src/lib.rs
• eco-tests/src/mock.rs
• eco-tests/src/tests_mentat_indexer.rs

[github-actions]

🛡️ AI Review — Skeptic (security review)

VERDICT: SAFE

VERY HIGH scrutiny: 8-day-old account with 1 public repo and 2 lifetime PR contributions, tempered by repository write permission and commits predominantly authored by established contributor gztensor; correctly targets devnet-ready and has no known Gittensor association.

Static review covered the consensus-critical dust accounting, issuance migration, coinbase liquidity reservoirs, swap cleanup, and runtime configuration changes. No trusted AI-review or Copilot instruction files were modified.

Findings

No findings.

Prior-comment reconciliation

• 709af33f: addressed — RuntimeVersion::spec_version is now incremented from 427 to 428.

Conclusion

The previously missing runtime version bump is now present, and no malicious behavior or security vulnerability remains evident in the patch.

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📜 Previous run (superseded)

Sev	File	Finding	Status
CRITICAL	runtime/src/lib.rs (RuntimeVersion::spec_version)	Runtime changes are missing a spec_version bump	✅ Addressed RuntimeVersion::spec_version is now incremented from 427 to 428.

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🔍 AI Review — Auditor (domain review)

VERDICT: 👍

Gittensor association UNKNOWN; newly created contributor account with repository write access, so the large integration diff received heightened scrutiny.

PR body was empty/trivial; the Auditor has auto-filled it. Please review.

The runtime change is accompanied by a spec_version bump from 427 to 428 and targeted coverage for dust accounting, liquidity reservoirs, migrations, fee dispatch metadata, hotkey swapping, and runtime APIs.

This PR subsumes the dust-accounting work in #2754 and adds broader integration coverage. This PR is the better candidate. Recommend closing #2754. Other overlaps are incidental or concern broader active branches rather than equivalent implementations.

The devnet endpoint was unavailable in this environment, so its live spec_version could not be queried; no automatic edit was made.

Findings

No findings.

Conclusion

The integrated changes are internally consistent, appropriately tested, and contain no merge-blocking domain defects in the reviewed diff.

[github-actions]

🔄 AI review updated — Skeptic: VULNERABLE

[github-actions]

🔄 AI review updated — Skeptic: VULNERABLE

[github-actions]

🔄 AI review updated — Skeptic: SAFE Auditor: 👍