app/upgrades: add v1.11.1 audit min_disk_free_percent floor

[mateeullahmalik]

Summary

• add a new custom upgrade handler v1.11.1
• enforce audit.params.min_disk_free_percent >= 15 at upgrade execution
• keep behavior monotonic: only raise to floor, never downgrade if governance already set a higher value
• wire v1.11.1 into the central upgrade registry and upgrade tests

Context

Mainnet needs a deterministic, upgrade-time safety floor for audit host disk-free enforcement, without mutating historical v1.11.0 semantics.

Safety / Correctness

• no store key additions/deletions
• runs RunMigrations first, then applies bounded param update
• fails fast if AuditKeeper wiring is missing
• preserves deterministic behavior and minimal blast radius

Files Changed

• app/upgrades/upgrades.go
• app/upgrades/upgrades_test.go
• app/upgrades/v1_11_1/upgrade.go (new)
• app/upgrades/v1_11_1/upgrade_test.go (new)

Tests

Executed:

• go test ./app/upgrades/... ./x/audit/v1/keeper/...

All passed.

[roomote-v0]

Rooviewer   See task

Reviewed commits dc05815..3208581 which add the v1.11.1 upgrade handler with conditional audit store support for direct v1.10.1->v1.11.1 upgrades. The AuditStoreLoader correctly detects on-disk store presence and skips adding audit when it already exists. The upgrade handler properly distinguishes between the two upgrade paths via fromVM presence checks: for the direct path it initializes audit with DefaultGenesis (which includes ScEnabled=true matching v1.11.0 behavior) and anchors epoch zero at the upgrade height; for the v1.11.0 path it skips initialization. The min_disk_free_percent floor enforcement is monotonic and applied in both cases. Store loader selector, registration wiring, and tests all look correct. No issues found.

Previous reviews

• 6c82c1e: Review #1
• f06585c: Review #2

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