The dependency maintenance run completed cleanly. Here's what happened:

## Results

**3 patch-level updates applied:**

| Package | Before | After | Type |
|---------|--------|-------|------|
| `tokio` | 1.52.2 | 1.52.3 | Direct |
| `cc` | 1.2.61 | 1.2.62 | Transitive (build tool) |
| `hashbrown` | 0.17.0 | 0.17.1 | Transitive (via `indexmap`) |

No minor or major bumps were needed — all direct dependencies were already at their latest minor versions within their declared semver ranges.

**All 7 quality gates passed on first attempt:**
- ✅ `cargo fmt --check` — clean
- ✅ `cargo clippy` — 0 warnings
- ✅ `cargo test --all-features` — 403 tests + 14 doctests passed
- ✅ `cargo build --all-features` — clean
- ✅ `cargo tarpaulin` — coverage threshold met
- ✅ `cargo deny check` — no advisories, bans, or license issues
- ✅ `cargo audit` — clean across 268 crate dependencies

Since `Cargo.lock` is gitignored for this library crate (correct convention for libraries — consumers resolve their own lockfiles), there's nothing to commit.