Bug Description

Version: OpenClaw 2026.5.3-1 (2eae30e)
OS: macOS Darwin 25.1.0 / node v24.1.0

Both memory_search corpus=all and wiki_search corpus=all return only wiki corpus results, completely ignoring memory corpus. However, wiki_search corpus=memory works correctly.

Steps to Reproduce

Run the following in the main agent:

memory_search(query="Roblox lucky block SEO analysis", corpus="all", maxResults=5)
// Returns: 5 wiki results, 0 memory results ❌

wiki_search(query="Roblox lucky block SEO analysis", corpus="all", maxResults=5)
// Returns: 5 wiki results, 0 memory results ❌

wiki_search(query="Roblox lucky block SEO analysis", corpus="memory", maxResults=5)
// Returns: 5 memory results ✅

memory_search(query="Roblox lucky block SEO analysis", corpus="memory", maxResults=5)
// Returns: 5 memory results ✅

Environment

• OpenClaw: 2026.5.3-1 (2eae30e)
• Wiki vault mode: bridge (431 exported artifacts)
• Memory status (main): 158/158 files indexed, 1305 chunks
• Bridge is enabled and healthy

Root Cause (初步判断)

• wiki_search corpus=memory works → the bridge channel to memory is functional
• corpus=all in both tools returns 0 memory results → the shared search backend is not properly merging the two corpora
• Possible cause: corpus=all in shared backend mode does not correctly route memory corpus through the unified search pipeline, or wiki results over-rank memory results

Workaround

Call corpus=memory and corpus=wiki separately and merge results manually.

Expected Behavior

corpus=all should return results from both memory and wiki corpora, merged and ranked together.