# C02 downloadable case kit
C02 ชุดข้อมูลค้นหา: ตัวเลขทันเวลาแต่ผู้รับใช้ได้หรือยัง. Authored synthetic data, p4-toy-1, 2026-10-12.
ผู้ประสานค้นหาต้องได้ข้อมูลรุ่นที่ตรงแผนและยังไม่หมดอายุ พร้อมรายละเอียดที่พอให้จัดงานตรวจต่อ

1. Read [requirements.md](requirements.md) for baseline, proposed change, role prerequisites, all 12 KSEC criteria and evidence. Read the [chapter](https://drone.pk-research.work/knowledge/drone-applications/cases/search-data-kit/) for the worked explanation.
2. Choose B (brief and selection), O (resources and hold conditions) or D (interfaces, tests and restoration). Complete the K/S prerequisite check; follow remedial links if missing. E means Ethics and C Character.
3. Download [interfaces.csv](interfaces.csv); mark unknown explicitly and request missing sources. Roles are proposed responsibilities, actual owner not_assigned. No real equipment claims.
4. Preserve v0 and use [change-record.md](change-record.md). Write expected before any run using [test-plan.md](test-plan.md). arrival_age = deadline_age ยังทันเมื่อเงื่อนไขก่อนหน้าผ่าน; arrival_age >= TTL หมดอายุ; 0 bitrate ถูกปฏิเสธ; null bitrate เป็น unknown
5. Get all four [shared lab files](../lab/readme.md): [calculator.py](../lab/calculator.py), [fixture.json](../lab/fixture.json), [expected.csv](../lab/expected.csv), [readme.md](../lab/readme.md). Keep these together. Follow its bounded local run and capture steps.
6. [results.csv](results.csv) contains the author's host calculation for this case. The [raw results](../lab/raw-results.json) and [host record](../lab/host-results.json) document 17 expected matches, identical replay and three matching rollback pairs (Python 3.14.3, 2026-10-12 16:20:43 UTC). For your own work, capture a separate actual record with matching case IDs, disposition, evidence_level, JSON metrics, physical_status and learner_status. Do not paste expected as actual. Author runs do not assess learner skills.
7. Compare all expected metrics, rerun identical input for byte equality, then restore the saved baseline fixture and verify hash/output. The rollback fixture scenario alone is not evidence that your own edits were restored.
8. Submit role artifacts v0/v1 under the same APP-C02-role-K/S/E/C01 IDs, with feedback, response, reason, owner, missing evidence and retest. Keep NOT_RUN until work exists; use meets / needs_revision / insufficient_evidence for reviewed work. CLO/PLO blank pending_design.

Baseline: DATA01: age 10 s; 2097152 bytes; 256000 bit/s; deadline_age 30 s; TTL 120 s; connected true; PLAN1. Serialization 65.536 s, arrival age 75.536 s.
Proposal: DATA02: 131072 bytes gives 4.096 s and arrival age 14.096 s. Reduced payload is authored, not proven compression quality or delivery.
ไม่มีคลื่นวิทยุ เครือข่ายจริง พิกัดบุคคล ผลค้นพบ การยืนยันผู้รับหรือพื้นที่ clear; receipt NOT_CONFIRMED
numeric_fit means only authored numeric conditions. unknown retains null, outside_bounds requires revision, offline_hold/stale_plan/expired/deadline_missed are data-case dispositions. Physical/flight/RF/field NOT_RUN; permissions/receiver NOT_CONFIRMED; learners NOT_RUN. P4 pending_verification; P3 pending_field_review specialist not_assigned; P5 preparation only, no real learners.