Group task corrections by fix principle

RELEASE_NOTES.md

@@ -43,15 +43,14 @@ All published Gurobi reference solutions were revalidated using the updated chec
 
 ### Task and instance corrections
 
-We audited the task contracts, instances, reference implementations, and solutions. Notable corrections include:
-
-- `segundo2019`: restored the missing `large_3` and `large_4` instances and updated the corresponding Gurobi artifacts.
-- `wei2020b`: restored the non-empty `large_1` reference solution.
-- `delage2022`: added correct support for the open-ended, closed-ended, and knife-dependent setup variants, including their variant-specific fields and constraints.
-- `bierwirth2017`: corrected the checker to derive operation completion times from trusted instance processing times and removed an unsupported alternative solution schema.
-- `oliveira2020`: regenerated the tiny instance at an appropriate benchmark scale and updated its derived metadata and reference result.
-- `fragkos2021`: corrected an unreliable historical Gurobi reference caused by callback/runtime handling.
-- `furini2016` and `segundo2019`: repaired zero-incumbent fallback handling in the reference Gurobi programs.
+We audited the task contracts, instances, reference implementations, and solutions. Notable corrections are grouped below by the underlying fix principle:
+
+- **Schema/checker contract alignment.** `carosi2019`, `kang2021`, `riley2025`, `vidal2011`, `luo2017`, `rothenbacher2018`, and `engineer2012` now expose the checker-facing solution conventions in `solution_schema.json`, including public numbering, virtual depot/sink nodes, expanded stop identifiers, time-indexing conventions, and required solution-key formats.
+- **Complete-witness variable naming.** `adulyasak2015`, `bertsimas2024`, `liao2020`, `rahmaniani2018`, and `rahmaniani2022` now document canonical complete-witness variable names or variable-name generation patterns in `solution_schema.json`, so submissions do not need to infer task-specific Gurobi variable names.
+- **Checker contract and robustness fixes.** `delage2022` now supports the open-ended, closed-ended, and knife-dependent setup variants with variant-specific fields and constraints. `bierwirth2017` now derives operation completion times from trusted instance processing times and no longer accepts an unsupported alternative solution schema. `belvaux2000` and `cordeau2019` received checker consistency fixes. `oliveira2020`, `ozturk2020`, `pecin2017`, and `spliet2015` received hardened malformed-solution handling.
+- **Task instance and reference artifact repairs.** `segundo2019` now includes the missing `large_3` and `large_4` instances and matching Gurobi artifacts. `wei2020b` has a restored non-empty `large_1` reference solution. `oliveira2020` has a regenerated tiny instance at an appropriate benchmark scale with updated derived metadata and reference result. `fragkos2021` has a corrected historical Gurobi reference affected by callback/runtime handling. `wang2018` was added to complete the canonical 180-task collection and then standardized with complete runtime metadata.
+- **Canonical instance-set cleanup.** Redundant second tiny instances and their derived Gurobi artifacts were removed from `armbruster2012`, `bierwirth2017`, `borndorfer2007`, `engineer2012`, `guo2021`, `huisman2005`, `nagy2015`, `oliveira2020`, `ozturk2020`, `pecin2017`, `potthoff2010`, `ropke2009`, `rothenbacher2018`, `ruiz2007`, `segundo2019`, `spliet2015`, and `vidal2011`, leaving the canonical one tiny plus five large instances per task.
+- **Gurobi runtime and fallback consistency.** `furini2016` and `segundo2019` have repaired zero-incumbent fallback handling in the reference Gurobi programs. Runtime start-time initialization was standardized in `bode2012`, `bodur2017`, `bragin2022`, `buchheim2018`, `chen1999`, `cote2018`, `furini2021`, `garcia2011`, `hoffman1993`, `kowalczyk2018`, `kreter2018`, `letelier2022`, and `roshanaei2017`.
 
 Associated reference solutions and feasibility results were regenerated or revalidated where required.