Remove Origin Sonic contracts and automation

[clement-ux]

Summary

Origin Sonic (OS) is being wound down. Its staking strategy and SwapX AMO are empty, and the vault holds enough wS to cover every claim. This PR removes the Sonic code and automation from the repo. Git history keeps it if we ever need it again.

On-chain state checked at Sonic block ~80.56M:

• All 5 validators (15, 16, 17, 18 and 45) have 0 stake, and there is no pending SFC withdrawal.
• The SwapX AMO is empty and no default strategy is set.
• The vault holds 5.55M wS. That covers the 2.66M of unclaimed queue requests and the 2.89M OS supply.
• The OSVault implementation on-chain already matches deployments/sonic/OSVault.json, so deleting 026_VaultUpgrade.s.sol drops nothing pending.

Code Change

Removed

• Solidity:
  • OSVault, OSonic, WOSonic
  • SonicStakingStrategy, SonicValidatorDelegator, SonicSwapXAMOStrategy
  • OSonicHarvester, OSonicZapper
  • the SwapX/Metropolis pool boosters and factories, SonicProxies
  • the Sonic interfaces, MockWS and MockSFC
• The scripts/deploy/sonic/ folder and build/deployments-146.json. DeployManager and Base.s.sol no longer map chain 146.
• Talos actions:
  • removed: otokenOsRebase, otokenOsCollectAndRelease, otokenOsSonicRestakeRewards, sonicUndelegate, sonicClaimWithdrawals, manageBribeOnSonic
  • permissionedRebase itself was removed on master by Add Admin Role to Vault  #2973 (merged into this branch)
  • helpers removed: utils/sonic.js, utils/sonicActions.js
  • curated ABIs removed: abi/sonic_staking_strategy.json, abi/poolBoosterSwapX.json, abi/vault.json, abi/poolBoosterCentralRegistry.json. Only the Sonic actions used them; I checked this repo and the org.
• pnpm ops tasks sonicDefaultValidator and sonicStaking, plus the Sonic branches in tasks/vault.js and depositWETH.
• Sonic anvil scripts, the Sonic role overrides and the commented Sonic env vars.
• Docs: generated SVG diagrams, READMEs, ACTIONS.md, the Talos inventory (regenerated), CLAUDE.md and the agent skills.

Kept on purpose

• otokenAddWithdrawalQueueLiquidity on Sonic (every 10 min). claimWithdrawal funds the queue on its own. But the dapp (oplabs/defi libs/defi/rebasing/src/hooks.ts) only marks a request claimable when queued <= withdrawalQueueMetadata.claimable. Without this poke, OS holders would stay stuck at "pending". The Base/Plume discussion in June 2026 reached the same conclusion. This keeps chain 146 in tasks/lib/{network,contracts,deployments}.ts and SONIC_PROVIDER_URL in the runner image.
• deployments/sonic/* and addresses.sonic stay as the address registry.
• brownie/ stays: it holds the historical strategist runlogs.

Talos schedules (seed_schedules.sql)

The seed now deletes the 6 obsolete Sonic rows on the next boot:

• sonic_staking_request_withdraw
• sonic_staking_claim_withdraw
• otoken_os_collectAndRelease
• otoken_os_sonicRestakeRewards
• otoken_os_rebase
• module_rebase_sonic (Add Admin Role to Vault  #2973 removed its insert row; this also deletes the existing row)

The insert is ON CONFLICT DO NOTHING, so this uses the same pattern as the Plume row. otoken_addWithdrawalQueueLiquidity_sonic is unchanged.

Deploy file vs Talos actions check

The deleted deploy script sonic/026_VaultUpgrade deployed OSVault (OSONIC_VAULT_IMPL). The only Talos action that still touches Sonic is otokenAddWithdrawalQueueLiquidity. It resolves OSonicVaultProxy from the kept descriptor and uses the curated abi/IVault.json, so nothing changes for it.

Testing

• make build-contracts, build-tests-unit, build-tests-fork, build-tests-smoke and build-scripts all pass.
• Unit tests: 2,233 passed (tests/unit/**).
• pnpm test:tasks (75), pnpm test:scripts (66) and pnpm test:layouts (11) all pass. eslint is clean.
• The ops command catalog snapshot was regenerated, and only the two Sonic tasks dropped out. The Talos catalog loads 35 actions.
• Sonic anvil fork, OS withdrawal request then claimWithdrawal after the delay, with no keeper: the user receives 100k wS.
• Sonic anvil fork, otokenAddWithdrawalQueueLiquidity --network sonic run with FORK=true IMPERSONATE=<talos relayer>: it adds the 100k shortfall, and claimable moves from 72.22M to 72.32M.
• Fork and smoke tests compile, but I did not run them.

🤖 Generated with Claude Code

[naddison36]

LGTM