docs: update Jingyuan Tian's research profile

[CubeLander]

Summary

• add Jingyuan Tian's bilingual research direction to the canonical profile/people.json
• record the curated contribution areas distributed, storage, profiling, development environment
• let canonical profiles override automatically inferred contribution tags so the curated description survives leaderboard refreshes
• refresh profile/core_contributors.json from the canonical profile data

Profile

• 中文：异构大模型推理系统的端到端性能分析与优化
• English: End-to-end performance analysis and optimization for heterogeneous LLM inference systems
• Contribution areas: distributed, storage, profiling, development environment

Validation

• python3 scripts/update_contributor_leaderboard.py --profiles-only
• JSON parsing for both modified profile files
• python3 -m pytest -q — 17 passed
• git diff --check

[Copilot]

Pull request overview

Updates the canonical contributor profile metadata so Jingyuan Tian’s curated research directions and contribution areas are preserved and propagated into generated/refreshable leaderboard outputs.

Changes:

• Added bilingual research_direction_{zh,en} and curated contribution_areas to the canonical profile/people.json record.
• Updated leaderboard generation/refresh logic to prefer canonical contribution_areas over inferred key_contributions, and to keep key_contributions/contribution_areas consistent.
• Refreshed profile/core_contributors.json entries and extended test coverage to assert the curated contribution areas are preserved.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
tests/test_update_contributor_leaderboard.py	Adds an assertion ensuring curated contribution areas are retained in generated member profiles.
scripts/update_contributor_leaderboard.py	Introduces canonical contribution-area override logic and applies it during enrichment/profile-only participant generation.
profile/people.json	Adds Jingyuan Tian’s bilingual research direction and curated contribution areas to the canonical profile.
profile/core_contributors.json	Regenerates/updates stored contributor payload data to reflect canonical profile fields.

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