Ports the codex-rules transcript-aware dedup strategy: when a session cache is fresh (process restart or compaction-cleared cache), the injector now scans prior tool outputs for the `[Rule: <relativePath>]` banner and pre-populates the cache so duplicate rule injections are suppressed even when the persistent JSON has been lost. Hydration runs at most once per session per process, fails open on transport errors, and is short-circuited when the same banner reappears.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
YeonGyu-Kim
fbe423a2d4