chore (changelog): credit unicode FTS tokenization fix

CHANGELOG.md

@@ -39,6 +39,7 @@ Docs: https://docs.openclaw.ai
 - Subagents/Models: preserve `agents.defaults.model.fallbacks` when subagent sessions carry a model override, so subagent runs fail over to configured fallback models instead of retrying only the overridden primary model.
 - Agents/Security: sanitize workspace paths before embedding into LLM prompts (strip Unicode control/format chars) to prevent instruction injection via malicious directory names. Thanks @aether-ai-agent.
 - Agents/Context: apply configured model `contextWindow` overrides after provider discovery so `lookupContextTokens()` honors operator config values (including discovery-failure paths). (#17404) Thanks @michaelbship and @vignesh07.
+- Memory/FTS: make `buildFtsQuery` Unicode-aware so non-ASCII queries (including CJK) produce keyword tokens instead of falling back to vector-only search. (#17672) Thanks @KinGP5471.
 - Agents/OpenAI: force `store=true` for direct OpenAI Responses/Codex runs to preserve multi-turn server-side conversation state, while leaving proxy/non-OpenAI endpoints unchanged. (#16803) Thanks @mark9232 and @vignesh07.
 - Agents: return an explicit timeout error reply when an embedded run times out before producing any payloads, preventing silent dropped turns during slow cache-refresh transitions. (#16659) Thanks @liaosvcaf and @vignesh07.
 - Browser/Agents: when browser control service is unavailable, return explicit non-retry guidance (instead of "try again") so models do not loop on repeated browser tool calls until timeout. (#17673) Thanks @austenstone.