Add bilingual 45-problem judge experience

[JacobLinCool]

Summary

• add the bilingual 45-problem WASM-OJ catalog, learning path, scoring policies, and reference solutions
• add judge onboarding, search, self-test, resizing, score details, and bounded ChatGPT help
• require CORP-compatible browser isolation consistently across hosts and documentation
• bind the updated source tree to append-only zero-mismatch browser/server conformance evidence
• include the project rationale in IDEA.md

Verification

• pnpm run ci:verify
• server conformance: 21/21
• browser/server canonical comparison: zero mismatches
• 45 problem manifests and generated fixtures verified