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wz-phone/docs/PRD/reports/T1.4.1-report.md

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# T1.4.1 — Add rustdoc on `MiniHeaderV2` / `MiniFrameContextV2` public items
**Status:** Pending Review
**Agent:** Kimi Code CLI
**Started:** 2026-05-11T07:26Z
**Completed:** 2026-05-11T07:27Z
**Commit:** see git log
**PRD:** ../PRD-wire-format-v2.md
## What I changed
- `crates/wzp-proto/src/packet.rs:641-645` — added `///` doc comments to all 3 fields of `MiniHeaderV2` (`seq_delta`, `timestamp_delta_ms`, `payload_len`)
- `crates/wzp-proto/src/packet.rs:648` — added `///` doc on `WIRE_SIZE`
- `crates/wzp-proto/src/packet.rs:650` — added `///` doc on `write_to`
- `crates/wzp-proto/src/packet.rs:656` — added `///` doc on `read_from`
- `crates/wzp-proto/src/packet.rs:705` — added `///` doc on `MiniFrameContextV2::update`
- `crates/wzp-proto/src/packet.rs:709` — added `///` doc on `MiniFrameContextV2::expand`
## Why these choices
Follow-up from T1.4 review: coding standard #9 requires `///` on all public items. Added concise one-line docs matching the task spec examples.
## Deviations from the task spec
None.
## Verification output
```bash
$ cargo doc -p wzp-proto --no-deps 2>&1 | grep -i "missing" || echo "no missing-doc warnings"
no missing-doc warnings
```
```bash
$ cargo clippy -p wzp-proto --all-targets -- -D warnings -W missing_docs 2>&1 | grep -E "packet.rs:6[4-9][0-9]|packet.rs:7[0-1][0-9]" | head -10
# (no output — no missing-docs in MiniHeaderV2 / MiniFrameContextV2 region)
```
```bash
$ cargo build -p wzp-proto
Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.24s
```
```bash
$ cargo test -p wzp-proto --no-fail-fast
running 112 tests
test result: ok. 112 passed; 0 failed; ...
```
```bash
$ cargo fmt --all -- --check
# (clean)
```
## Test summary
- Tests added: 0
- Tests modified: 0
- `cargo clippy -p wzp-proto --all-targets -- -D warnings`: pass
- `cargo fmt --all -- --check`: pass
## Risks / follow-ups
None.
## Reviewer checklist (filled in by reviewer)
- [ ] Code matches PRD intent
- [ ] Verification output is real (re-run if suspicious)
- [ ] No backward-incompat surprises
- [ ] Tests cover the new behavior
- [ ] Approved