Standardize wang2018 runtime metadata

Preserve end-to-end runtime for evaluator compatibility while retaining Gurobi model.Runtime as solve_time_seconds for diagnostics.

tasks/wang2018/gurobi_code.py

@@ -514,6 +514,7 @@ def build_and_solve(data, time_limit):
         "solver": "Gurobi",
         "model": "M2_linearized_MILP",
         "time_limit": time_limit,
+        "solve_time_seconds": model.Runtime,
         "status": None,
         "objective_value": None,
         "mip_gap": None,

tasks/wang2018/gurobi_solution/large_solution_1.json

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:955e125e9e20474ed690a0221bb92bf19bdce70e38c7fb327ef157b1735c4e3c
-size 19848
+oid sha256:b240bc90a71f05376cb930ac0ecfc0c0819ac51e74ae87585fa01b08fce4f3c4
+size 19869

tasks/wang2018/gurobi_solution/large_solution_2.json

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:db091a9db05fd72b4cdbcf28bc51e32feb4ca10f5fc7556140e9df53d4a8e4b7
-size 18981
+oid sha256:3fefcd89bbfeecb5ee53f37b618d43e89f3bdc05eaab6802c08158584b8dd9b2
+size 19003

tasks/wang2018/gurobi_solution/large_solution_3.json

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:a42cb51a15a3b6a54ba94517fa39ea2c2ca2a8a51a82628c3721b53cff5d0dba
-size 19587
+oid sha256:04ad2aae044b02025752c82d99c71266a827a1ba156879268069c62ad08db8ea
+size 19609

tasks/wang2018/gurobi_solution/large_solution_4.json

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:32a0097743c779794a662c8859b64a4b808ae695024cf4df22233c281097a79d
-size 19701
+oid sha256:8371ae5de2ec9a08b994a1a03b39219896f9bb149eecf0559743e18dda44c824
+size 19723

tasks/wang2018/gurobi_solution/large_solution_5.json

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:41ebb601e49eb5ae8fc7197f1482c963a4d2c0eaca5e31d7336e478078bda0a1
-size 10561
+oid sha256:b4bc3611c6413b92275a73eea03a991f175517bb3a1e524a8b81db1f96b5ad66
+size 10583

tasks/wang2018/gurobi_solution/tiny_solution.json

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:2ccc013b8576513d02e5a5d77885a3a03f2c7a7f94a550b8cf9ca340908dd295
-size 5546
+oid sha256:6279681adcfb6778bf7cfb4cb76d822bc37f757846c1db2904bc12f2afd92869
+size 5565