[2026-05-16-llmstxt-pg-docs] docs: add llms.txt index for LLM context

[alauda-github-idpbot]

Summary

Adds an llms.txt index following the llmstxt.org
format, enabling LLMs and developer tooling to discover and traverse this
repo's documentation efficiently.

Generation method: descriptions authored by sub-agents reading each
source file, orchestrated by
doc-center/.claude/skills/llmstxt-generator via gt-task batch.

• Files indexed: 26
• Batches processed: 2
• Generation mode: manifest
• Sub-agents: 2 (one per batch, dispatched in parallel)
• Groups (H2 sections): Root, apis, functions, how_to, trouble_shooting

What changed

• llms.txt — top-level index, 44 lines, grouped into 5 sections
• llmstxt-state.json — per-file descriptions and SHA-256 hashes for future refresh runs
• llmstxt-config.yaml — generator configuration (include/exclude patterns, grouping, batch size)

task: 2026-05-16-llmstxt-pg-docs

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: e1052070-1408-4833-9e3e-73f93249bab9

📥 Commits

Reviewing files that changed from the base of the PR and between f4aa564 and 6ec4eaf.

📒 Files selected for processing (3)

• llms.txt
• llmstxt-config.yaml
• llmstxt-state.json

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/2026-05-16-llmstxt-pg-docs

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