[OMNIML-4964] cell_t1_d3

[ChenhanYu]

Draft PR opened by pensieve-intern for OMNIML-4964.

Stage cell_t1_d3 of Epic OMNIML-4961. The agent ran from the SPEC on the ticket description; review every change before marking ready.

Always-draft is enforced — the bot never auto-merges.

---

Agent's self-narration (stripped from PR diff; surfaced here for context):

INTERN_ARTIFACTS.json:

{
  "AL_qualitative_categories": {
    "coding": 1.2781,
    "humanities": 1.3442,
    "math": 1.4108,
    "multilingual": 1.3429,
    "qa": 1.3675,
    "rag": 1.3815,
    "reasoning": 1.2566,
    "roleplay": 1.2802,
    "stem": 1.3352,
    "summarization": 1.3883,
    "writing": 1.3549
  },
  "AL_qualitative_overall": 1.34,
  "AL_throughput_32k_categories": {
    "high_entropy": 1.3702,
    "low_entropy": 1.3063,
    "mixed": 1.4167
  },
  "AL_throughput_32k_overall": 1.3651,
  "experiment_dir": "/lustre/fsw/portfolios/coreai/users/chenhany/experiments/cicd/cicd_1781185067/",
  "experiment_id": "cicd_1781185067",
  "sweep_name": "Qwen3.5-4B_dflash_vllm_t1_d3"
}

VERIFICATION_COMMENT.txt:

OMNIML-4964 SPEED-bench cell t1_d3 completed.

What was done:
- Authored tools/launcher/examples/Qwen3.5/Qwen3.5-4B/specdec_bench_dflash_vllm_t1_d3.yaml
- Authored tools/launcher/common/specdec_bench/_cells/Qwen3.5-4B_dflash_vllm_t1_d3.yaml
- sweep_name: Qwen3.5-4B_dflash_vllm_t1_d3
- experiment_id: cicd_1781185067
- experiment_dir: /lustre/fsw/portfolios/coreai/users/chenhany/experiments/cicd/cicd_1781185067/
- qualitative Average_AL: 1.34
- throughput_32k Average_AL: 1.3651
- PR opened: NONE — this runner prompt says not to commit, push, or create PRs; runner handles that step.

What is next:
- Engine should ingest INTERN_ARTIFACTS.json and proceed with downstream aggregation/wrap-up.

Trigger pipeline URL: https://gitlab-master.nvidia.com/omniml/integration/nmm-sandbox/-/pipelines/54438731

Slurm job status: SUCCEEDED — cicd_1781185067 at /lustre/fsw/portfolios/coreai/users/chenhany/experiments/cicd/cicd_1781185067/

Pollution-strip removed INTERN_ARTIFACTS.json, VERIFICATION_COMMENT.txt from this commit (sidecar narration and/or incidental lockfile regeneration are never part of the agent's intended deliverable).

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