{
  "schema_version": 1,
  "case": {
    "id": "cnc-live-scheduling",
    "name": "CNC scheduling with a live priority update",
    "domain": "Flexible manufacturing",
    "summary": "A nonlinear bi-objective schedule is initialized from public tables, then updated by changing one job priority while reusing accepted state.",
    "objective_labels": [
      "Weighted nonlinear tardiness",
      "Energy and load"
    ],
    "sense": "minimize",
    "public_table_counts": {
      "job_machine": 54,
      "jobs": 18,
      "machines": 3
    },
    "tss": {
      "solver": "NSGA-II",
      "segment_counts": {
        "assignment": 1,
        "permutation": 1
      },
      "workbench_slots": [
        "build_problem",
        "evaluate"
      ],
      "fixed_runtime": [
        "typed initialization",
        "crossover",
        "mutation",
        "repair",
        "validation"
      ]
    },
    "turns": [
      {
        "id": "t000",
        "title": "Initial bi-objective schedule",
        "request": "Bi-objective nonlinear flexible parallel-machine scheduling: 18 jobs (table `jobs`, id column job_id) on 3 heterogeneous CNC machines (table `machines`, id column machine = m1/m2/m3). Eligibility and machine-specific processing times are in table `job_machine` (one row per (job_id, machine): processing_h p_jm, eligible in {0,1}); a job may only be assigned to a machine with eligible=1 and processing_h not NULL.\n\nDECISIONS: assignment A_j in {m1,m2,m3} of each job to exactly one eligible machine, and a processing sequence pi_m (ordered list) of the jobs assigned to each machine m.\n\nTIME EVOLUTION: On each machine m, process its jobs in the order of pi_m. For job j with predecessor i on the same machine: S_j = max(r_j, C_i); for the FIRST job on a machine (no predecessor): S_j = r_j and no setup time is incurred. Completion: C_j = S_j + s_ijm + p_jm. Setup time between consecutive jobs i then j on machine m: s_ijm = b_m * ( 1.2*I(family_i != family_j) + 0.4*I(material_i != material_j) + 0.35*|u_i - u_j| ), using family, material, setup_level columns of `jobs` and b_m of `machines`. Tardiness T_j = max(0, C_j - d_j). Makespan Cmax = max_j C_j. Machine load L_m = sum of p_jm over jobs on m + sum of s_ijm over consecutive pairs in pi_m.\n\nOBJECTIVE 1 (minimize): f1 = sum_j w_j * T_j^2 + 0.05 * Cmax^2, with w_j = priority_w of `jobs`.\nOBJECTIVE 2 (minimize): f2 = sum_m [ p_m * ( sum_{j on m} p_jm + 0.5 * sum_{consecutive pairs on m} s_ijm ) + beta_m * L_m^2 ], with p_m and beta_m from `machines`.\n\nCONSTRAINTS (violations must be penalized): each job assigned to exactly one machine and only to eligible machines; per-machine sequencing enforces S_j >= C_i for consecutive pairs (machine processes one job at a time); S_j >= r_j for all jobs; setup times exactly as the formula above; all variables nonnegative. Solve as a bi-objective minimization with solver_preference=evolutionary and report the Pareto front of nondominated schedules.",
        "restart": {
          "skill": "typed_initialization",
          "label": "Typed initialization",
          "reused": 0,
          "fresh_ratio": 1.0,
          "reason": "The first request builds the TSS Workbench and samples a typed population."
        },
        "objectives": [
          "f1",
          "f2"
        ],
        "population_size": 100,
        "pareto_size": 8,
        "generations": 10,
        "latency_seconds": 506.6,
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            "feasible": true,
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        "request": "Small live data update: in the public `jobs` table, change ONLY job J01's priority_w from 2.0 to 2.5. Keep all other data (all other jobs, machines, job_machine eligibility and processing times), both objective definitions (f1 = sum_j w_j * T_j^2 + 0.05 * Cmax^2; f2 = sum_m [ P_m * ( sum p_jm + 0.5 * sum s_ijm ) + beta_m * L_m^2 ]), all constraints, and the evolutionary/Pareto (NSGA-II) solver route unchanged. Reuse the accepted state where valid and apply the appropriate fast restart, then return the updated Pareto front of nondominated schedules.",
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