Align resolve_market ABI, reject stale prices, wire Reflector adapter (#680-#683)

[Ndifreke000]

Summary

• Align ResolutionContract::finalize invoke with Market::resolve_market ABI #683 — ResolutionContract::finalize and arbitrate_uphold_proposer invoked Market::resolve_market with a mock ABI (bare u32 market_id, no resolver/expires_at). Fixed both cross-contract calls to match the real ABI: (resolver: Address, market_id: String, outcome: bool, signature: BytesN<64>, expires_at: u64). resolver is the resolution contract's own address (self-authorizing as the direct invoker); expires_at reuses the candidate's already-checked signature_expiry. Added a market_id_to_string helper since resolve_market takes the id as a decimal String.
• Reject stale Reflector/Pyth prices in adapters #682 — ReflectorAdapter/PythAdapter read a price timestamp/publish_time but never checked it. Added a MAX_PRICE_AGE_SECONDS (1 hour) staleness gate and a new ContractError::StalePrice (26) returned when a fetched price is older than that window.
• Storage migration: per-market adapter config and resolution_price #681 — Added per-market MarketAdapterConfig (oracle contract address, Reflector Asset, resolution_price) stored separately from Market (no migration needed for existing markets), with admin-gated set_market_adapter_config / get_market_adapter_config entrypoints. Bumped STORAGE_VERSION to 6.
• Wire OracleAdapter into resolve_market (Reflector first) #680 — oracle::verify_market_outcome / verify_market_outcome_v2 now dispatch to the on-chain ReflectorAdapter (built from the new per-market config) when the Reflector adapter is enabled via set_adapter_enabled, instead of always failing closed with UnauthorizedOracle. If enabled but unconfigured for a market, it fails closed with OraclePriceUnavailable rather than silently falling back.

Notes / TODO

• Pyth wiring is intentionally left as a follow-up per Wire OracleAdapter into resolve_market (Reflector first) #680's "Reflector first" framing — Pyth needs a raw Wormhole VAA Bytes proof rather than the fixed 64-byte Ed25519 signature these entrypoints accept, so it still fails closed with UnauthorizedOracle when enabled.
• ResolutionContract::void_market invokes a void_market entrypoint on the market contract that does not exist yet in contracts/market/src/lib.rs; this predates this PR and is out of scope for Align ResolutionContract::finalize invoke with Market::resolve_market ABI #683 (only finalize/resolve_market alignment was in scope).
• Per repo owner's request, this PR was implemented and pushed without running cargo test/cargo build/soroban build — please run CI/tests before merge.

Closes #683
Closes #682
Closes #681
Closes #680