docs: remove generic agent boilerplate

[trvny]

Trim root AGENTS.md to Feedseek-specific feed, generation and Cloudflare rules.

Summary by CodeRabbit

• 文档
  • 更新了贡献指南中的共享辅助工具说明，明确优先使用共享的规范化与去重工具。

[mergify]

This pull request does not currently match the merge queue conditions, so it cannot be queued from here. The box comes back if it matches again.

[github-actions]

Instruction Rot 🧠

check	result
rotcheck	✅ success
yaplint	✅ success
Never Gonna Deploy You	✅ success

🎧 RickLang WAV: generated only when the RickLang guard fails.

[coderabbitai]

Navigate logical layers of code changes, visualize relationships, and explore their blast radius.

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: CHILL
• Plan: Advanced
• Run ID: bc96e54f-f81c-45a9-9cac-071f02930200

📥 Commits

Reviewing files that changed from the base of the PR and between c0a5dfd and 710975f.

📒 Files selected for processing (1)

• AGENTS.md

Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

贡献指南移除了开展重叠工作前检查 main、开放 PR 和近期变更的要求。指南还明确要求使用共享规范化和去重 helper，而不是源代码本地副本。

Priority: ⬇️ Low

Change: Other

Merge Risk: ⚪ Minimal · up to 71097

This change only adjusts contributor guidance; it introduces no runtime or test changes, and no concrete product-impacting merge risk is established.

Architecture Summary

Architecture risk: 🔵 Low · up to 71097

The change affects 1 system.

Changed systems: AGENTS.md

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — AGENTS.md (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in AGENTS.md: 移除了在开展重叠工作前检查 main、开放 PR 和近期变更的要求；将共享规范化/去重约定改为明确要求使用共享 helper，而非源代码本地副本。

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	标题准确概括了移除通用代理说明这一主要变更，简洁且与改动相关。
Description check	✅ Passed	描述说明了精简根目录 AGENTS.md 并保留 Feedseek 专用规则，与改动相关。
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

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• Create a new PR

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_{小兔翻开指南看，
共享 helper 写得明白。
规范化时轻轻跳，
去重代码不分家。
新页落定，胡萝卜香。}

_{Comment @coderabbitai help to get the list of available commands.}

[kanarek-companion]

🐤 Kanarek · 🟣 merged

main ✅

Merged. Kanarek applies the tiny official beak stamp.

_{Documentation · 1 files}