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0.6.1 - 2026-05-18

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@github-actions github-actions released this 19 May 02:27
v0.6.1
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Release Notes

Fixed

  • The linearised evaporation flow variable Q_ev is now bounded
    symmetrically [-q_max, +q_max] instead of [0, q_max], where
    q_max = |k_evap0 + k_evap_v · v_max| · margin. Previously, when
    the per-stage net evaporation coefficient c_ev[month] was negative
    (net rainfall over the lake surface exceeds open-water evaporation,
    common in 5–7 months/year on tropical and subtropical basins), the
    upper bound clamped to zero and the equality row forced the
    over-evaporation slack to absorb the imbalance at every wet-month
    stage of every scenario. Negative Q_ev values now flow into the
    storage continuity equation as net rainfall input, and the violation
    slacks fire only on genuine modelling infeasibility. Cases with
    all-positive monthly coefficients are unaffected (bit-identical
    output).

  • evaporation_m3s in simulation/hydros.parquet is now a signed
    value: positive entries continue to represent net evaporative loss,
    while negative entries represent net rainfall input absorbed by the
    reservoir. Downstream consumers that filtered or asserted
    evaporation_m3s >= 0 will need to be updated.

Changed

  • The HydroEvaporation variable in
    cobre_core::generic_constraint::VariableRef is documented as a
    signed net-flow quantity rather than an outflow-only quantity.
    Generic constraints referencing it that previously assumed
    non-negativity may need their bounds revisited.

  • Docstring corrections in LinearizedEvaporation,
    EvaporationIndices, and the penalty_overrides schema reference:
    the linearised coefficients k_evap0, k_evap_v, and the violation
    slacks f_evap_plus/f_evap_minus are stage-averaged flows in m³/s,
    not volumes in hm³ as the documentation previously claimed. No
    runtime behaviour change.

Added

  • New deterministic regression case d17-evaporation-mixed-sign
    exercising a single-hydro four-stage horizon spanning Oct → Jan with
    monthly evaporation coefficients that switch sign across stages.
    Guarded by parity_hash_d17 (byte stability) and
    d17_signed_evaporation::d17_evaporation_is_signed_per_month
    (explicit sign assertions per stage).

cobre-cli 0.6.1

Install cobre-cli 0.6.1

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/cobre-rs/cobre/releases/download/v0.6.1/cobre-cli-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/cobre-rs/cobre/releases/download/v0.6.1/cobre-cli-installer.ps1 | iex"

Download cobre-cli 0.6.1

File Platform Checksum
cobre-cli-aarch64-apple-darwin.tar.xz Apple Silicon macOS checksum
cobre-cli-x86_64-apple-darwin.tar.xz Intel macOS checksum
cobre-cli-x86_64-pc-windows-msvc.zip x64 Windows checksum
cobre-cli-aarch64-unknown-linux-gnu.tar.xz ARM64 Linux checksum
cobre-cli-x86_64-unknown-linux-gnu.tar.xz x64 Linux checksum

cobre-mcp 0.6.1

Install cobre-mcp 0.6.1

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/cobre-rs/cobre/releases/download/v0.6.1/cobre-mcp-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/cobre-rs/cobre/releases/download/v0.6.1/cobre-mcp-installer.ps1 | iex"

Download cobre-mcp 0.6.1

File Platform Checksum
cobre-mcp-aarch64-apple-darwin.tar.xz Apple Silicon macOS checksum
cobre-mcp-x86_64-apple-darwin.tar.xz Intel macOS checksum
cobre-mcp-x86_64-pc-windows-msvc.zip x64 Windows checksum
cobre-mcp-aarch64-unknown-linux-gnu.tar.xz ARM64 Linux checksum
cobre-mcp-x86_64-unknown-linux-gnu.tar.xz x64 Linux checksum
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