Launchpad v8

[pileks]

Adds the launchpad_v8 program (moonDJUoHteKkGATejA5bdJVwJ6V6Dg74gyqyJTx73n) implementing the full token-launch lifecycle: mint + USDC fundraise → launch-authority approvals → settlement (Squads DAO + futarchy AMM + Meteora DAMM v2 single-sided pool + optional bid wall) → claim/refund → finalize (Performance Package v2 + MintGovernor handover). Ships with SDK module sdk/src/launchpad/v0.8/ and a bankrun unit + integration test suite. The programs/launchpad symlink now resolves to v08_launchpad.

Instructions

Instruction	Role
initialize_launch	Creates Launch, mints all distributable tokens up-front, installs MintGovernor and transfers mint authority to it.
start_launch	Launch authority flips state to Live.
fund	Funder deposits USDC; updates FundingRecord and a time-weighted committed_amount_accumulator.
extend_launch	MetaDAO multisig (in production builds) extends the launch period.
close_launch	Permissionless after launch period; Closed if total_committed >= minimum_raise, else Refunding.
set_funding_record_approval	Launch authority sets each funder's approved_amount (≤ committed).
settle_launch	Creates DAO, seeds futarchy AMM (1/5 USDC + 2M tokens) and Meteora pool (900k tokens single-sided), routes remaining USDC to treasury (and bid wall if enabled), transfers metadata authority.
claim	Funder pulls approved / total_approved * 10M tokens.
refund	Funder pulls unapproved USDC (or full committed if Refunding).
claim_additional_token_allocation	One-shot transfer of optional additional_tokens_amount.
finalize_launch	Registers two MintAuthoritys under the governor (capped PP authority + uncapped DAO authority), inits PP v2 (5 tranches at [2, 4, 8, 16, 32]x), hands governor admin to the Squads vault.