bash tool results omit the working directory, leading to pwd/ls loops

Description

Bash calls run in a fresh process with cwd reset to the Location, so cd does not persist across calls. Because results never show the working directory, the model infers its location from ls/pwd output — and can misread this as the directory changing between calls, spiraling into repeated pwd/ls checks. Observed with GLM 5.3 Flash, and also reproducible with DeepSeek v4 (same repetition family as #43800 and #45442). The bash tool should echo the resolved working directory in each result so the model has a stable anchor.

Steps to reproduce

1. Start a session with GLM 5.3 Flash (also observed with DeepSeek v4).
2. Have the agent cd into a subdirectory in one bash call, then run further commands in separate calls.
3. With no cwd in the results, it re-checks pwd/ls repeatedly and can loop.

OpenCode version

1.18.27

Operating System

macOS 26 (Darwin 25.5.0)