**Overall Verdict:** Strong Accept — The submission is complete, internally consistent, professionally representative, and objectively evaluable end to end with no material contributor-side gaps.

**Completeness Check:**
- Instruction: Complete — The conform, leader, loudness, encoding, subtitle, frame-count, and output requirements are explicit and mutually consistent.
- Inputs: Complete — Three valid 1080p25 AVC/AAC sources, the four-event EDL, production-timecode map, delivery specification, and eight-cue program SRT are present; all EDL ranges fit the source durations and total 1,075 program frames.
- Toolchain: Complete — FFmpeg/ffprobe with loudnorm and libx264 is legally obtainable on Linux, requires no specialized hardware, and supports the entire workflow on one ordinary machine.
- Reference output: Complete — The MP4/SRT pair is present. Direct container and bitstream inspection confirms 47 seconds, 1,175 uniform 1080p25 AVC samples, High profile level 4.0 headers, 47 type-5 IDRs at 25-frame cadence, no composition offsets, and 48 kHz stereo AAC. The eight subtitle cues have the correct four-second shift and unchanged text.
- Rubric: Complete — The readable evaluator defines deterministic hard gates, weighted partial scoring, tolerances, reference comparisons, and negative self-tests that distinguish compliant, naive, and targeted-invalid outputs.

**File and Task Reachability:**
Attachment classification: `partially_reachable`. Task classification: `reachable`. Both manifest ZIPs matched their declared byte counts, passed integrity testing, were unencrypted, and contained only regular files without traversal or unsafe links. Inspected members were `input/program.edl`, `input/source_tc_map.txt`, `input/spec_sheet.md`, `input/subtitles_program.srt`, `input/sources/A.mp4`, `B.mp4`, and `C.mp4`; `reference/deliverable.mp4`, `reference/subtitles.srt`, `evaluation/evaluate.py`, `naive_try/deliverable.mp4`, `naive_try/subtitles.srt`, `task_card.json`, `build_log.txt`, and `selftest_review_log.txt`. No submitted program was executed. Decoded picture inspection and independent black, silence, SSIM, and loudness measurements could not be repeated because the reviewer environment lacked FFmpeg/ffprobe; container tables, codec headers, all AVC samples, logs, evaluator source, and self-test records were inspected instead. This is a reviewer-tooling limitation, not a submission defect. The end-to-end path is clear: map EDL timecodes to source frames, trim and concatenate the four events behind the leader, normalize audio, encode the required MP4, retime subtitles, and evaluate both outputs through deterministic media and reference checks. License keys, accounts, tokens, and other credentials are not required from the contributor. Confidential, proprietary, or internal material may be evaluated as submitted evidence without requiring additional disclosure.

**Special Screening:**
None

**Recommended Changes:**
The timecode construction, reference pair, evaluator, and targeted negative tests provide sufficient evidence for deployment. No changes are required.