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PATENT POSTURE AND LICENSE-SCOPE NOTICE
(informational; does not modify the Apache-2.0 license in LICENSE)
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Why Apache-2.0 for tsugi (NOTICE PREAMBLE)

This package (tsugi, the "Software") is licensed under the Apache
License, Version 2.0 ("Apache-2.0"), with its full automatic patent
grant. See the LICENSE file for the full Apache-2.0 license text.

tsugi is a packaging-level meta-package. It is a thin wrapper that
depends on two physically separate SDKs published by TsugiCinema,
Inc. ("Licensor"):

  - tsugi-mend  (tsugiai-mend-sdk): Apache-2.0. Patent-independent by
    deliberate construction. Wraps public-art techniques (Decoupled
    DiLoCo, DES-LOC, async tensor parallelism, FALCON). Does NOT
    exercise TsugiCinema's K-Pool LoRA or Infinity patent estates.

  - tsugi-kpool (tsugiai-kpool-sdk): Apache-2.0. Patent-aligned. The
    Apache-2.0 patent grant on that SDK extends to TsugiCinema's
    K-Pool LoRA (US App. 64/060,315, filed 2026-05-07) and Infinity
    (US App. 64/055,093, filed 2026-05-01) patent estates AS PRACTICED
    BY THE SDK CODE AS DISTRIBUTED. Apache-2.0 Section 3's "necessarily
    infringed by their Contribution" language bounds the patent license
    to the specific embodiment present in the SDK code, not the broader
    scope of the patent claims as filed.

This meta-package itself contains no patent-exercising code. Its
Apache-2.0 patent grant covers only the small wrapper code in this
repository. Each sub-SDK's own Apache-2.0 license is the operative
patent grant for the techniques implemented in that sub-SDK.

The two sub-SDKs share zero code. tsugi exposes them under a unified
import namespace (tsugi.mend and tsugi.kpool) for developer
convenience.

The Apache-2.0 license posture across this package and both sub-SDKs
follows the common open-source-infrastructure pattern of an Apache-2.0
SDK as the developer-adoption surface.

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tsugi
Copyright 2026 TsugiCinema, Inc.

This product is a packaging-level meta-package. It depends on and
re-exports two physically separate Apache-2.0 SDKs published by
TsugiCinema, Inc.:

  - tsugi-mend  (https://github.com/tsugiai/tsugi-mend)
                Apache-2.0; patent-independent; integration of
                Decoupled DiLoCo + DES-LOC + async tensor parallelism
                + FALCON fail-slow mitigation. See that repository's
                NOTICE file for the upstream attributions.

  - tsugi-kpool (https://github.com/tsugiai/tsugi-kpool)
                Apache-2.0; patent-aligned implementation of
                US App. 64/060,315 (K-Pool LoRA) and US App. 64/055,093
                (Infinity). See that repository's LICENSE preamble for
                the patent-grant scope.

This meta-package itself contains no patent-exercising code. Its
Apache-2.0 patent grant covers only the small wrapper code in this
repository. The operative patent grants for the techniques
implemented in each sub-SDK are governed by each sub-SDK's own
Apache-2.0 license, included with that sub-SDK's distribution.
