test: fix exit code validation in test runner fixture (#792)

* Initial plan

* feat: add rust one-shot-token library implementation

Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>

* docs: update README for rust implementation

Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>

* feat: update Dockerfile and entrypoint for rust build

Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>

* Initial plan

* fix: correct success field calculation in test runner

- Normalize exitCode before evaluating success condition
- Previously compared original result.exitCode (possibly undefined) to 0
- Now normalizes to 0 first, then uses normalized value for success check
- Fixes issue where exit code 0 was incorrectly marked as failure

Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>

---------

Co-authored-by: anthropic-code-agent[bot] <242468646+Claude@users.noreply.github.com>
Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>
Co-authored-by: Jiaxiao (mossaka) Zhou <duibao55328@gmail.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 4 people

containers/agent/one-shot-token/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "one-shot-token"
+version = "0.1.0"
+edition = "2021"
+description = "LD_PRELOAD library for one-shot access to sensitive environment variables"
+license = "MIT"
+
+[lib]
+name = "one_shot_token"
+crate-type = ["cdylib"]
+
+[dependencies]
+libc = "0.2"
+once_cell = "1.19"
+
+[profile.release]
+opt-level = 2
+lto = true
+strip = true