Switch subnet emissions to price-based shares

[gztensor]

Description

Switch subnet emissions to price-based shares and root-proportion injection cap

• get_shares now uses the subnet price EMA (SubnetMovingPrice) so emission is proportional to normalized price over emit-enabled subnets.
• Alpha injection cap is now root_proportion * alpha_emission, so older subnets (lower root proportion) transition from liquidity injection to chain buys.
• Update/repair affected emission tests; drop obsolete TAO-flow share tests.

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

[github-actions]

🛡️ AI Review — Skeptic (security review)

VERDICT: VULNERABLE

BASELINE scrutiny: gztensor has repo write permission and substantial prior subtensor activity; PR is price-based-testnet targeting testnet directly.

No malicious code pattern found in the runtime diff itself: no new dependencies, no .github/ai-review/* or copilot-instruction changes, no new runtime unwrap/expect/unsafe, and the changed arithmetic uses checked or saturating fixed-point operations. The remaining blocker is the target branch path.

Findings

Sev	File	Finding
HIGH	PR metadata: baseRefName=testnet, headRefName=price-based-testnet	Feature branch targets testnet outside the approved promotion flow	(off-diff)

Other findings

• [HIGH] Feature branch targets testnet outside the approved promotion flow (PR metadata: baseRefName=testnet, headRefName=price-based-testnet) — The trusted branch policy says non-deployment PRs must target devnet-ready, and testnet should only receive promoted deployment changes in the staged flow. This PR is a feature/economic runtime change (Switch subnet emissions to price-based shares) from price-based-testnet directly into testnet, which bypasses the normal promotion path. Retarget through the approved flow, or document and obtain approval for a deployment/hotfix exception before merging.

Prior-comment reconciliation

• c1320fba: not addressed — Current PR metadata still shows baseRefName=testnet and headRefName=price-based-testnet, with no fetched PR-body/comment justification for an approved deployment or hotfix exception.

Conclusion

This appears to be a legitimate economic runtime change, but it still targets testnet directly from a feature branch instead of following the approved promotion flow. That branch-policy bypass remains a merge blocker until the PR is retargeted or explicitly justified as an approved deployment/hotfix exception.

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📜 Previous run (superseded)

Sev	File	Finding	Status
HIGH	PR metadata: baseRefName=testnet, headRefName=price-based-testnet	Feature branch targets testnet outside the approved promotion flow	➡️ Carried forward to current findings Current PR metadata still shows baseRefName=testnet and headRefName=price-based-testnet, with no fetched PR-body/comment justification for an approved deployment or hotfix exception.

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# 🔍 AI Review — Auditor (domain review) has not yet run on this PR.

[github-actions]

🔄 AI review updated — Skeptic: VULNERABLE

[github-actions]

🔄 AI review updated — Skeptic: VULNERABLE