feat(v1): emit RotationVoted event on intermediate votes (#130)

[s6pa1rta3n-lab]

Summary

Closes #130.

This PR adds the missing intermediate RotationVoted contract event when a resolver votes on an open rotation proposal in Tholos v1 (contracts/tholos), providing real-time off-chain visibility into in-flight committee voting progression prior to execution or deadlock cancellation.

Changes Made

1. Contract Event Definition (contracts/tholos/src/lib.rs):
   • Defined #[contractevent] pub struct RotationVoted containing:
     • old_resolver: Address
     • new_resolver: Address
     • resolver: Address
     • approve: bool
     • yes_votes: u32
     • no_votes: u32
2. Intermediate Vote Emission (contracts/tholos/src/lib.rs):
   • In vote_rotation, emits RotationVoted on the Ok(None) still-open proposal path after persisting state to instance storage.
3. Unit Testing (contracts/tholos/src/test.rs):
   • Added unit test test_rotation_vote_emits_event verifying vote progression across a 5-member committee (3/5 majority required):
     • Vote 1: approve = false -> returns Ok(None) and emits RotationVoted (yes = 0, no = 1).
     • Vote 2: approve = true -> returns Ok(None) and emits RotationVoted (yes = 1, no = 1).
     • Vote 3: approve = true -> returns Ok(None) and emits RotationVoted (yes = 2, no = 1).
     • Vote 4: approve = true -> returns Ok(Some(true)) and emits RotationExecuted + ResolversUpdated.
4. Documentation Updates:
   • Updated docs/src/CONTRACT.md (vote_rotation description and Events table).
   • Updated docs/src/ROTATION_DESIGN.md (vote_rotation description).

Verification

• cargo build -p tholos --target wasm32v1-none --release passes.
• cargo test passes (all 70 tholos tests, all 107 tholos-v2 tests).
• cargo fmt --all -- --check passes.
• cargo clippy --all-targets --all-features -- -D warnings passes.

Payout Routing

• EVM (Base/Arbitrum/Polygon/ETH): 0xF46C9F6d70C50BF81ef3588AB523a90a594a2F89
• Stellar: GCL6OXAMLD75BMTINA6EMRUDWK5THQUSHMYNLSNBCJAPZJHNYJTUNIBC