chore(deps): bump github.com/cloudwego/eino from 0.9.15 to 0.9.18

---
updated-dependencies:
- dependency-name: github.com/cloudwego/eino
  dependency-version: 0.9.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

go.mod

@@ -4,7 +4,7 @@ go 1.26.4
 
 require (
 	github.com/a2aproject/a2a-go v0.3.15
-	github.com/cloudwego/eino v0.9.15
+	github.com/cloudwego/eino v0.9.18
 	github.com/go-playground/validator/v10 v10.30.3
 	github.com/grokify/mogo v0.74.8
 	github.com/plexusone/omnillm v0.17.0

go.sum

@@ -68,8 +68,8 @@ github.com/clipperhouse/uax29/v2 v2.7.0 h1:+gs4oBZ2gPfVrKPthwbMzWZDaAFPGYK72F0NJ
 github.com/clipperhouse/uax29/v2 v2.7.0/go.mod h1:EFJ2TJMRUaplDxHKj1qAEhCtQPW2tJSwu5BF98AuoVM=
 github.com/cloudwego/base64x v0.1.7 h1:NppS+Fgzg5ovhn4NkUXaDT3x9jldgH5ToMCqzBSi2zI=
 github.com/cloudwego/base64x v0.1.7/go.mod h1:Cu1PV9zfrSf7ET2tIbWbbEy7jO7HHJ13q4X2SQ8aWYg=
-github.com/cloudwego/eino v0.9.15 h1:F+7uXeZYbJm30a/kaC93Mj6H9K2zx4thQaQP695NggE=
-github.com/cloudwego/eino v0.9.15/go.mod h1:OBD1mrkfkt/pJa4rkg1P0VnaMeOVl7l8IAdEqY//3IQ=
+github.com/cloudwego/eino v0.9.18 h1:ICHc8nB0ij49Qb3z6dQP/fBKXS6iekoz3nZ1jEMQan8=
+github.com/cloudwego/eino v0.9.18/go.mod h1:OBD1mrkfkt/pJa4rkg1P0VnaMeOVl7l8IAdEqY//3IQ=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=