{
  "version": "1.0",
  "timestamp": "2026-04-11T16:30:00+09:00",
  "session_type": "maintenance",
  "phase": "01",
  "phase_name": "llm-tuning",
  "phase_dir": ".planning/phases/01-llm-tuning",
  "plan": 1,
  "task": null,
  "total_tasks": null,
  "status": "paused",
  "summary": "Maintenance session — Phase 01 LLM tuning re-verification + Hermes Agent v0.8.0 update + Qwen promoted to primary role",
  "completed_work": [
    {"id": 1, "name": "Balanced role (Qwen 3.5 35B-A3B) v3 retuning", "status": "done", "commit": "0dee779"},
    {"id": 2, "name": "Fast role (Gemma 4 26B-A4B) v3 retuning + mmproj GPU", "status": "done", "commit": "0dee779"},
    {"id": 3, "name": "Speculative decoding experiment (E2B draft) + rejection decision", "status": "done", "commit": "0dee779"},
    {"id": 4, "name": "Benchmark utilities (bench_short/bench_long/test_ts_ratios)", "status": "done", "commit": "0dee779"},
    {"id": 5, "name": "E2B model files removed (3.8 GB disk recovery)", "status": "done", "commit": "0dee779"},
    {"id": 6, "name": "llama.cpp b8660 -> b8757 update + regression analysis", "status": "done", "commit": "pending"},
    {"id": 7, "name": "llama.cpp b8660 retained (Gemma 4 9% regression vs bug fixes)", "status": "done", "commit": "pending"},
    {"id": 8, "name": "Qwen 3.5 35B promoted to primary role (default_role=balanced)", "status": "done", "commit": "pending"},
    {"id": 9, "name": "Hermes Agent update fff237e1 -> e902e55b (v0.8.0, 340 commits)", "status": "done", "commit": "pending"},
    {"id": 10, "name": "Local Hermes patches preserved via stash/pop auto-merge (8 files)", "status": "done", "commit": "pending"},
    {"id": 11, "name": "Hermes config.yaml updated: Qwen default + DISCORD_HOME_CHANNEL fix", "status": "done", "commit": "pending"}
  ],
  "decisions": [
    {
      "decision": "Qwen 3.5 35B (balanced) promoted to primary role",
      "rationale": "Speed differential vs Gemma 4 26B is 1.25 t/s (negligible). Qwen larger (35B vs 26B), thinking mode, better Korean/coding, architecture mature. Vision CPU offload (6.4s/image) acceptable for Hermes Agent text-dominant workload.",
      "phase": "01"
    },
    {
      "decision": "llama.cpp kept at b8660 (rolled back from b8757)",
      "rationale": "b8757 has Gemma 4 correctness fixes but introduces ~9% speed regression on Gemma 4. b8757 binary retained in llama_bin_run.backup_b8660/ for rollback. Re-evaluate on next llama.cpp release.",
      "phase": "01"
    },
    {
      "decision": "Speculative Decoding rejected",
      "rationale": "+14% avg gen speedup vs -31% cold start penalty + tokenizer mismatch (E2B vs 26B) + mmproj conflict + 5+ additional flags complexity.",
      "phase": "01"
    },
    {
      "decision": "KV cache q8_0 for fast, q4_0 for balanced",
      "rationale": "fast needs mmproj GPU capacity (q8_0 saves 2.5 GB). balanced uses q4_0 for maximum VRAM headroom.",
      "phase": "01"
    },
    {
      "decision": "Removed --mlock/--poll/--prio/-t/-tb from all roles",
      "rationale": "Measured impact 0.04 t/s. Dedicated inference machine has no CPU contention.",
      "phase": "01"
    }
  ],
  "performance_baselines": {
    "balanced_qwen3.5_35b": {
      "gen_short_tps": 64.16,
      "prefill_long_tps": 1157,
      "gen_long_tps": 62.00,
      "vram_free_mb": 3246,
      "mmproj_mode": "CPU",
      "vision_encode_sec": 6.4
    },
    "fast_gemma4_26b": {
      "gen_short_tps": 71.89,
      "prefill_long_tps": 1672,
      "gen_long_tps": 66.67,
      "vram_free_mb": 2073,
      "mmproj_mode": "GPU",
      "vision_encode_sec": 1.0
    }
  },
  "hardware_constraints": {
    "gpu0_pcie": "Gen3 x4 (3.94 GB/s)",
    "gpu1_pcie": "Gen4 x16 (31.5 GB/s)",
    "asymmetric_bottleneck": "GPU0 PCIe x4 limits inter-GPU transfers",
    "total_vram_mb": 24576
  },
  "blockers": [],
  "human_actions_pending": [
    {
      "action": "Run run_hermes_agent.bat to start Hermes Agent",
      "context": "All config ready. Qwen 3.5 35B loaded, DISCORD_HOME_CHANNEL set, v0.8.0 active.",
      "blocking": false
    }
  ],
  "uncommitted_files": [
    "config/engine_models.json",
    "agents/hermes-agent (submodule)",
    "~/.hermes/config.yaml (outside repo)",
    "agents/hermes-agent/cli-config.yaml"
  ],
  "next_action": "Commit remaining changes + git push + start Hermes Agent",
  "context_notes": "Maintenance session for Phase 01 and Hermes Agent (Phase 06 outcome). Phase 05 VS Code Extension Packaging still planning. Next real development session determined by user priority."
}