Add a regression proving an unverified investor cannot have a bid accepted even if place_bid succeeded earlier

[Baskarayelu]

📋 Description

Investor KYC is enforced via is_investor_verified in verification.rs, and bid acceptance funds escrow through accept_bid_and_fund. A subtle gap: an investor who was verified at place_bid time but whose KYC is later revoked must not have their bid accepted-and-funded. There is no regression asserting acceptance re-checks investor verification at fund time.

Why this matters: KYC must be enforced at the moment funds move, not just at bid placement. If acceptance trusts a stale verification, a revoked investor can still fund — a compliance hole. This locks the re-check at the fund boundary.

🎯 Requirements & Context

• Add quicklendx-contracts/src/test_kyc_recheck_on_accept.rs.
• Verify investor, place a bid, revoke investor KYC, then assert accept_bid_and_fund rejects with the KYC error from errors.rs.
• Assert no escrow is created and no funds move on the rejected acceptance.
• Positive control: a still-verified investor's bid accepts normally.

Context & constraints

• Token helpers consistent with test_investor_kyc.rs. If acceptance does NOT currently re-check, document it as a finding.

🛠️ Suggested Execution

git checkout -b test/kyc-recheck-on-accept
cargo test -p quicklendx-contracts test_kyc_recheck_on_accept -- --nocapture
cargo clippy -p quicklendx-contracts --all-targets -- -D warnings

• Edge cases: revoke between place and accept; revoke then re-verify before accept; pending (never verified) investor.

Example commit message

test(kyc): assert accept_bid_and_fund re-checks investor verification at fund time

Locks that a revoked investor cannot fund escrow via a previously-placed bid.

✅ Acceptance Criteria & Guidelines

Requirement	Target
KYC re-check at fund time asserted	Required
No escrow/funds on rejection	Required
Finding documented if gap exists	Required
Coverage of acceptance path	≥ 95%
cargo clippy clean	Required
Timeframe	96 hours from assignment

💬 Community & Support

Join Discord: https://discord.gg/VpngvTjWa — comment to claim. 🚀

[silentgeckoaudit3801]

I can take this one if you assign it to me. I inspected load_accept_bid_context and the funding path currently validates invoice/bid state before create_escrow, but I do not see an investor KYC re-check at the accept-and-fund boundary. I will wait for assignment before opening a PR, and will keep the patch focused on the regression plus the minimal guard needed to keep revoked/rejected investors from being accepted.