Add production-ready DART market module

[aglooney]

Summary

• add a lightweight, self-contained DART module for hourly day-ahead SCUC and rolling real-time SCED
• implement lossless nodal PTDF dispatch, generator N-1 corrective redispatch, reserves, chronological storage, and DA/RT settlements
• enforce physical storage modes, terminal-SOC support, quick-start availability and minimum-down rules, solver-quality reporting, settlement validation, and security model-size safeguards
• integrate the module into HOPE documentation, exports, tests, and Julia 1.9/latest CI coverage

Why

HOPE did not previously include a day-ahead/real-time market operations layer. This adds the V1 operational workflow described by the HOPE SCUC/SCED formulation while keeping the implementation in one readable source file and using in-memory Julia inputs rather than another case-file schema.

User and developer impact

Users can construct typed generator, storage, network, forecast, and state inputs; solve standalone SCUC or SCED models; run a rolling DA/RT simulation; and calculate two-settlement accounting. Results include fixed-integer nodal prices, reserve awards, contingency outcomes, solver status and gap metadata, and fully funded settlement residuals.

The supported V1 envelope is explicit generator N-1 security with a configurable fail-fast model-size safeguard. Reserve awards settle pay-as-bid; reserve-requirement duals remain informational.

Validation

• DART suite: 85/85 assertions passed on Julia 1.9 and Julia 1.12
• full post-merge suite on both Julia versions: 434 assertions passed, 0 failed; two upstream PCM test setups error locally because they hard-code the unsupported clp solver on Apple Silicon
• full pre-merge suite: 401/401 tests passed on Julia 1.9 and Julia 1.12
• 24-hour, 12-generator N-1 regression passed
• documentation build passed
• programmatic ModelCases example passed on Julia 1.9 and Julia 1.12
• relevant pre-commit hooks passed after reconciling with current main
• no CSV files are included

A companion programmatic example is committed separately on the ModelCases repository's dart_develop branch.

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[swang22]

@copilot resolve the merge conflicts in this pull request