A Uniswap v4 hook: Build a SOURCE-CODE FORK of the existing UNLOCK project to implement and verify standard-Uniswap compatibility. This is a NEW CODE-ONLY job, not a website change, public deployment or job.continue. Deliver working code/tests and a GitHub repository; prepare a later successor Sepolia release package. Do not redeploy or pretend the existing immutable hook can be upgraded.

SOURCE RESTORATION IS PART OF THIS TASK: the initial workspace may be empty. Fetch https://github.com/identity-md-launches/launch-1560-unlock and resolve accepted commit 92e55dfe1d4b5863ceed2f744f4279942375fe65, delivered by job c5a965b6-0413-42f9-abd5-ecd0bb4bf972. Verify any newer accepted project head before choosing the baseline. If source fields are available, bind repoUrl/baseCommit in the actual request. If this UI does not provide them, you must explicitly clone/fetch the public repository into a temporary directory and restore its verified tracked project files into the permitted workspace. A URL in this paragraph is not an assertion that files were imported. Preserve workspace .git and protected admission checks; do not overwrite them with the cloned .git or remove protected tests. Record provenance, source commit and tree, report exact retrieval/collision errors, and do not stop merely because no source was initially preloaded. Never rebuild from the old launch-1309/1534 baseline or an unrelated unlock-v2 folder. Preserve the latest frontend and all previous fixes as source; publishing this adaptation must not change the current live site/configuration.

Existing Sepolia launch 1560: token 0x20978223b637fec0c6276ab0184cf7011dd1d483, hook 0xbbb78a4898e903b082ccd09efc7823ca7339bfc0. These are historical evidence, not successor addresses.

GOAL: a successor hook that can be quoted and traded using IMD Explorer's existing standard Uniswap flow, without an Explorer patch or replacement/custom router. First verify the CURRENT site encoding and deployed contracts. Observed Sepolia chainId 11155111 uses UniversalRouterV2 0x3a9d48ab9751398bbfa63ad67599bb04e4bdf98b, V4Quoter 0x61b3f2011a92d183c7dbadbda940a7555ccf9227, PoolManager 0xE03A1074c86CFeDd5C142C4F04F1a1536e203543 and empty hookData. Match official deployment records and exact runtime hashes/source revisions, not the latest GitHub branch. Forking the router to another address does NOT meet this goal.

CRITICAL COUNTEREXAMPLE TO REPRODUCE: on Sepolia fork block 11918468, a local fixture pool/hook using the actual deployed UniversalRouterV2 can accept empty-hookData SWAP_EXACT_IN_SINGLE + SETTLE_ALL + TAKE_ALL (actions 0x060c0f, command 0x10). Replace TAKE_ALL with TAKE to Bob (0x060c0e). Alice still calls/pays, but Bob receives the bought tokens. Before/afterSwap callback parameters, executed delta, msgSender() and Alice's balance during those callbacks can be identical; delivery occurs afterwards. A naive msgSender-only hook therefore credits Alice without Alice receiving tokens. A local probe demonstrating this is evidence of a failed adaptation, not a solution. Router runtime hash observed: 0x14f7c9253a5406bafa90cb512f4a2db2a10513886603e7a9b4a2e72329e944f4.

IMPLEMENT an enforceable authentication/settlement design that preserves actual token-paying seller and actual receiving beneficiary attribution. Never trust tx.origin, arbitrary hookData/addresses, or equate router execution initiator with payer/recipient without proof. Examine alternate recipients, router-prefunding, intermediary balances, Permit2, contract wallets, batches and multihop. Malicious users can submit commands beyond those used by Explorer. A happy-path UI test or router address allowlist is insufficient.

QUOTES need a separate verified design: V4Quoter is a different callback sender, and Explorer's empty-hookData quote does not identify a wallet. Support its actual quote flow without admitting committed quota-bypassing swaps or creating lasting credits. Prove rollback and exact code/interface assumptions. Explain limits of indicative quotes versus a specific wallet's executable capacity. Implement tests for quote calls, live execution and bypass attempts through every permitted route.

FEASIBILITY GATE: do not silently relax the original accounting to make a test pass. If exact-recipient/payer attribution cannot be enforced using these existing standard interfaces, deliver a minimal executable impossibility/counterexample test and a concrete design decision comparing original accounting/custom route against execution-initiator accounting/standard route. State precisely which rule changes would be required; do not implement or call the changed semantics approved. Continue all independent core repairs and publish artifacts even if this gate remains unresolved. No fabricated compatibility or "all problems solved" claim.

PRESERVE: UNLOCK/UNLK, 1B/18 decimals, one-time factory mint, 10% swarm/87% pool/3% payer; ordinary free transfers; official 1.25% pool fees (1% payer/0.25% IMD), no extra hook fee; verified pri