feat(cache): fingerprint tracked getEnv reads#454
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This was referenced Jun 14, 2026
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Motivation: Once tools can read env values from the runner, cached tasks must remember tracked getEnv reads. Otherwise a later run can replay stale output after a tracked env value changes. Scope: Make the getEnv tracked option meaningful, record served single-env values in IPC reports, store tracked values in the post-run fingerprint, validate them during cache lookup, and render env-specific cache miss messages. This PR intentionally does not implement getEnvs or env glob match-set tracking. Verification: - cargo test -p vite_task_server --test integration - UPDATE_SNAPSHOTS=1 cargo test -p vite_task_bin --test e2e_snapshots fetch_env_tracked_invalidates_on_change -- --ignored - UPDATE_SNAPSHOTS=1 cargo test -p vite_task_bin --test e2e_snapshots fetch_env_tracks_with_explicit_inputs -- --ignored - cargo test -p vite_task_bin --test e2e_snapshots fetch_env_tracked_invalidates_on_change -- --ignored - cargo test -p vite_task_bin --test e2e_snapshots fetch_env_tracks_with_explicit_inputs -- --ignored
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Motivation
Runner-served
getEnvvalues can influence tool output even when the env is not declared in the task config. If cached tasks do not remember those reads, a later run can replay stale output after the served env value changes.Scope
Always record runner-aware
getEnvreads in IPC reports, store SHA-256 hashes of their served values in the post-run fingerprint, validate those hashes during cache lookup, and render env-specific cache miss messages without exposing values. This follows the env hashing model from #455, bumps the cache schema for the new serialized fingerprint field, and raises a post-run fingerprint error instead of treating non-UTF-8 tracked env values as unset.This PR intentionally does not add the
trackedoption orgetEnvs; those are split into later PRs in the stack.Verification
cargo check -p vite_taskcargo test -p vite_task_server --test integrationcargo test -p vite_task_bin --test e2e_snapshots fetch_env_tracked_invalidates_on_change -- --ignoredcargo test -p vite_task_bin --test e2e_snapshots fetch_env_tracks_with_explicit_inputs -- --ignored