[EPIC] Switch from OCEAN -> ASI in Predictoor, DF, & rest

(This was moved from pdr-private#97.)

(This needs to be updated based on 2-phase approach of ASI alliance. But for this, we only care about phase 2 for here)

Background / Motivation

Key refs:

OCEAN -> ASI token-swap contract will be ready Jun 13, 2024. Blog: "Ocean et al Finalize Merger", May 28, 2024 link
Rate is 1 OCEAN --> 0.4333 ASI
Predictoor feeds contract: ERC20Template3.sol
We're currently in "DF Main 2" with Vesting Wallet B. "DF Main is Here" Mar 16, 2023 link.
We can remove OCEAN from Vesting Wallet B via renounceVesting(). This is good news - much simpler than having to use splitter contract

Pre-requisites:

(Note: these are dates proposed by Trent, as of Thu Jun 4)

[ ] Fri Jun 14: Milestone {1}: announce plans for "Predictoor cutover & related" (ie this work)
[ ] Thu Jun 27: Milestone {2}: Eth <> Sapphire $ASI bridge is ready
[ ] Thu Jun 27: Milestone {3}: Sapphire $OCEAN -> $ASI migration contract ready
[ ] Fri Jun 28: Milestone {4}: lots of $ASI in Sapphire DEX
[ ] (start asap) Milestone {5}: DF & Predictoor code is ready, in branches & Sapphire testnet
[ ] Thu Jul 11: Milestone {6}: first payout of Predictoor DF rewards in $ASI
[ ] Thu Jul 18: Milestone {7}: old liquidity is removed; most of rest of OCEAN has been swapped
[ ] Milestone {8}: OceanDAO has swapped its OCEAN for ASI

(A = Alex, B = Berkay, T = Trent, N = Norbert)

Milestone {1}: announce plans for "Predictoor cutover & related" (ie this work)

Milestone {2}: Eth <> Sapphire $ASI bridge is ready

[ ] [A] Deploy Eth <> Sapphire $ASI bridge. It will be an "official" ASI bridge, using SingularityDAO OFT bridge tech [ref]. Do in collaboration with Oasis team.

Milestone {3}: Sapphire $OCEAN -> $ASI migration contract ready

(So that predictoors can migrate their OCEAN -> ASI, when they please)

[ ] [A] On Sapphire, deploy $OCEAN -> $ASI migration contract (a fork of the Eth mainnet one). BUT replace burn code with transfer to OPF.
[ ] [A] on Eth mainnet OceanDAO, send 5M OCEAN to DF Address1 (as a loan)
[ ] [A] on Eth mainnet DF Address1, migrate 5M $OCEAN to 2.1M $ASI
[ ] [A] from Eth mainnet DF Address1, bridge 2.1M $ASI to Sapphire
[ ] [N] make migration from Sapphire easy via a webapp. Put it in predictoor.ai, oceanprotocol.com, or other? It needs an approve, then a function call.
[ ] [T] Update docs.oceanprotocol.com, docs.predictoor.ai, pdr-backend READMEs for milestones 2 & 3

Q&A:

Q: Why is there "replace burn code with transfer to OPF" on the Sapphire contract? If it did that, wouldn't that grow the total equivalent # OCEAN tokens?
A: It doesn't grow the total equivalent # tokens on Eth mainnet. In Sapphire, it acts as a "simple swap" to make life easy for people on Sapphire. In OPF getting the OCEAN, it uses that to repay the loan from the earlier step. That is: when a user migrates OCEAN to get ASI, then OPF gets OCEAN; later, OPF bridges the OCEAN back to Eth mainnet, so we can convert it to ASI as well.

Milestone {4}: lots of $ASI in Sapphire DEX

Milestone {5}: DF & Predictoor code is ready, in branches & Sapphire testnet

(Can start asap)

[ ] [B] In contracts/ repo, do planned tweaks to DatatokenTemplate3. Test.
[ ] [A,B] Deploy 20 predictoor feeds to Sapphire testnet. Update contracts' address.json (keep old addrs too?)
[ ] [B] In df-py/ repo: deprecate all "Volume DF" code, since it's obsolete. This will help a lot for steps that follow (less code, way faster CI testing)
[ ] [B] Prep df-py/ repo: create a branch; change "OCEAN" -> "ASI" incl address, other changes as needed. Test.
[ ] [A,B] Prep barge/ repo: ""
[ ] [B] Prep pdr-backend/ repo: ""

Milestone {6}: first payout of Predictoor DF rewards in $ASI

(The timing for this is precise, it must jive with dates set at the top)

[ ] [A,B] Deploy 20 predictoor feeds to Sapphire mainnet. Update contracts' address.json (keep old addrs too?)
[ ] [B] Update df-py/ branch with new feed addresses, as needed
[ ] [B] Update barge/ ""
[ ] [B] Update pdr-backend/ ""
[ ] To VestingWallet B, call renounceVesting() "Splitter contract" such that $OCEAN in it goes back to DF treasury wallet, on Thu Jul 11
[ ] Add $ASI to Vesting Wallet B, such that DF Payouts are in $ASI, starting on Thu Jul 11
[ ] [T] Update docs.oceanprotocol.com, docs.predictoor.ai, pdr-backend READMEs

Milestone {7}: old liquidity is removed; most of rest of OCEAN has been swapped

[ ] [A] On Sapphire, in Illuminex, remove remaining OCEAN-ROSE liquidity
[ ] [A] on Sapphire, in Illuminex, add ASI-ROSE liquidity to use up rest of ROSE
[ ] [A] On Sapphire, in lizard.exchange, remove OCEAN-ROSE liquidity (if any)
[ ] [A] From Sapphire, bridge any OCEAN to Eth mainnet
[ ] Q: do we remove liquidity from OCEAN Uniswap pool here? Any other DEXes with OCEAN liquidity?

Milestone {8}: OceanDAO has swapped its OCEAN for ASI

Announce: apps will switch from OCEAN --> ASI, including Predictoor. Blog: "Superintelligence Alliance Updates to Data Farming and veOCEAN", Mar 29, 2024 link
Passive & Volume DF Airdrop Has Completed; They Are Now Retired. May 3, 2024 link
Github issue df-private#97