test(rust): lock acquisition time boundaries and replay snapshot

[LIghtJUNction]

Summary

Stacked follow-up to #542, based on its exact head a480c2bfc3aa4f5516f25ccee844ed848cd0c676. This PR targeted test/rust-route-contract-coverage to isolate the incremental test changes. It was subsequently merged into that prerequisite branch at 4aa25772586a486a55909f94ad3f8e6e4a3d5ac6; #542 remains the path to main.

• Replace registration tests' wall-clock now + 10 seconds deadlines with explicit persisted fixture timestamps.
• Add seven independent singleton-visit cases covering the inclusive 90-day first-touch and 30-day attribution bounds, visits just outside the windows, and the inclusive registration cutoff. Future visits must not supply attribution or consent retroactively.
• Replay registration after a later eligible visit and compare the entire persisted attribution snapshot, not just row count.
• Lock the fifth PostgreSQL acquisition test into the runner's exact inventory.

No production behavior, API, schema, frontend or Go changes.

Upstream relationship

LMM API-specific Rust regression tests. Depends on #542; no issue closed.

Verification

Passed locally:

• cargo fmt --all --check (repository-pinned Rust 1.91.0)
• python3 apps/api-rust/tests/scripts/test-new-integration-suites.py: 7 tests passed
• bash apps/api-rust/tests/scripts/check-real-integration-gates.sh: passed, 96 ignored tests across 10 modules
• bash -n apps/api-rust/tests/scripts/run-real-integration-gates.sh
• git diff --check

Also passed locally on the exact published tree:

• cargo test --locked -p lmm-api-rs --test acquisition -- --skip postgres_: 2 passed
• cargo clippy --locked -p lmm-api-rs --test acquisition -- -D warnings
• cargo test --locked -p lmm-api-rs --test acquisition -- --ignored --list: all 5 PostgreSQL tests compiled and listed (listing does not execute them)

Real PostgreSQL 18 integration logs for #542 at 4aa2577 confirm all 5 acquisition tests executed and passed (0 failed, 0 ignored), including the new boundary and replay assertions. Integrated commit 4aa2577 has the identical tree ff91ef2 as this PR's published 2a1e301. Local PostgreSQL was not available; database execution evidence comes from CI. The earlier #548 run was cancelled during the subsequent PR state changes.

Review scope

Searched open acquisition PRs; #542 is the existing prerequisite. Changes are limited to its test gaps and preserve the existing license and source headers. No credentials or production data are included.

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
🔒 Security Review	✅ Completed 2026-09-30T07:37:30.622794Z	2a1e301	Draft marked ready

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