fix(runner): seed clean workspace task brief

[RerankerGuo]

Description | 描述

Seed the default CleanContextRunner workspace with small AGENTS.md and SOUL.md task brief files so OpenClaw lightweight embedded runs no longer inject missing 76-byte stubs. The runner still passes the L1 extraction system prompt and user prompt explicitly, while the clean workspace remains low-context and stable for plugin cache behavior.

Related Issue | 关联 Issue

Fix #176

Change Type | 修改类型

• Bug fix | Bug 修复
• New feature | 新功能
• Documentation update | 文档更新
• Code optimization | 代码优化

Self-test Checklist | 自测清单

• Verified locally | 本地验证通过
• No existing features affected | 无影响现有功能

Additional Notes | 其他说明

Verified with npm test and npm run build using Node v24.15.0.

[Maxwell-Code07]

This directly addresses the clean workspace stub issue reported earlier. Seeding with AGENTS.md and SOUL.md is a practical fix that keeps the workspace low-context. We'll review it soon.

[ikelvingo]

Verified locally on Hermes 0.16.0 with the TencentDB-Agent-Memory plugin.

We hit the same #176 symptom — L1 extractor returning empty content / EMPTY_DUMP on a 147-session cold start seed. Since this PR was still open, I applied the fix from this PR as a local patch to our plugin install (file changes: +27/-3 src + 59 lines test, matches this PR diff).

After the patch, L1 extraction behavior changed completely:

• Sessions processed: 126/147 (in progress)
• L1 records extracted: 92, with 0 records showing empty content (0.0%)
• Continuous writes to vectors.db, no EMPTY_DUMP failures
• L1 cursor advancing normally through imported historical sessions

The fix works. Recommend merging.

[RerankerGuo]

Hi @Maxwell-Code07 — gentle ping on #179.

You earlier confirmed the clean-workspace seed approach for #176 was the right fix ("seeding with AGENTS.md and SOUL.md is a practical fix that keeps the workspace low-context"). Since then, @ikelvingo reported independently verifying this patch locally on Hermes 0.16.0 with 92 L1 records and 0 empty-content records, and explicitly recommended merging.

I rebased onto current main (4339e63) — CI green (Install / Manifest / Pack / Size Guard all success on 0e0a844). Anything blocking, or is there a maintainer-side ETA?

[YOMXXX]

Approved as the canonical fix for #176.

Local verification:

• COREPACK_ENABLE_AUTO_PIN=0 pnpm test (68/68 passed)
• COREPACK_ENABLE_AUTO_PIN=0 pnpm build
• git diff --check

This seeds the clean workspace with compact AGENTS.md/SOUL.md task briefs while preserving the explicit prompt path for L1 extraction and other text-only runner calls.

[RerankerGuo]

Maintenance update: rebased onto current main (98d6878) as single signed commit 3729f15. Revalidated locally: focused regression test 1/1 passed, full suite 68/68 passed, pnpm build passed, and git diff --check is clean. Refreshed GitHub CI is 4/4 green.