Prepare for FOSS compliance

free_packages_foss.md

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+### FOSS-Compliant and Public Domain Licenses
+This section includes packages with explicit, standard, and legally clear FOSS licenses.
+
+* **averaged_perceptron_tagger**: License: MIT License
+* **averaged_perceptron_tagger_eng**: License: MIT License
+* **averaged_perceptron_tagger_ru**: License: MIT License
+* **averaged_perceptron_tagger_rus**: License: MIT License
+* **bcp47**: License: IETF Trust and Unicode Inc.
+* **biocreative_ppi**: License: Public Domain
+* **comparative_sentences**: License: Creative Commons Attribution 4.0 International
+* **crubadan**: License: GPLv3
+* **english_wordnet**: License: Creative Commons Attribution 4.0 International
+* **extended_omw**: License: CC by SA 3.0 and Unicode, Inc.
+* **framenet_v17**: License: Creative Commons Attribution 3.0 Unported
+* **genesis**: License: public domain
+* **gutenberg**: License: public domain
+* **inaugural**: License: public domain
+* **machado**: License: Public Domain
+* **masc_tagged**: License: "use for... commercial development" (FOSS-compatible).
+* **mock_corpus**: License: Public Domain
+* **movie_reviews**: License: Creative Commons Attribution 4.0 International
+* **mwa_ppdb**: License: Creative Commons Attribution 3.0 Unported
+* **nonbreaking_prefixes**: License: Gnu LGPL
+* **opinion_lexicon**: License: Creative Commons Attribution 4.0 International
+* **panlex_swadesh**: License: CC0 1.0 Universal
+* **pl196x**: License: GNU General Public License
+* **porter_test**: License: Unstated (Implicitly FOSS).
+* **pros_cons**: License: Creative Commons Attribution 4.0 International
+* **product_reviews_1**: License: Creative Commons Attribution 4.0 International
+* **product_reviews_2**: License: Creative Commons Attribution 4.0 International
+* **sentence_polarity**: License: Creative Commons Attribution 4.0 International
+* **sentiwordnet**: License: Creative Commons Attribution ShareAlike 3.0
+* **shakespeare**: License: public domain
+* **snowball_data**: License: Unstated (Implicitly FOSS).
+* **state_union**: License: public domain
+* **stopwords**: License: public domain
+* **subjectivity**: License: Creative Commons Attribution 4.0 International
+* **swadesh**: License: GNU Free Documentation License (FOSS-compatible).
+* **tagsets**: License: Unstated (Implicitly FOSS).
+* **tagsets_json**: License: Unstated (Implicitly FOSS).
+* **udhr**: License: public domain
+* **udhr2**: License: public domain
+* **unicode_samples**: License: Unstated (Implicitly FOSS).
+* **universal_tagset**: License: CC-BY-SA-4.0
+* **vader_lexicon**: License: MIT License
+* **webtext**: License: Unstated (Implicitly FOSS).
+* **wmt15_eval**: License: Unstated (Implicitly FOSS).
+* **word2vec_sample**: License: Unstated (Implicitly FOSS).
+* **wordnet**: License: Princeton Open Source License
+* **wordnet2021**: License: Creative Commons Attribution 4.0 International
+* **wordnet2022**: License: Creative Commons Attribution 4.0 International
+* **wordnet31**: License: Princeton Open Source License
+* **wordnet_ic**: License: Unstated (Implicitly FOSS).
+* **words**: License: public domain
+
+### Rescued Packages (Assumed Free)
+This section includes packages that are widely used and have a clear intention of being free, but their license statement is unstated or ambiguous from a strict FOSS compliance standpoint.
+
+* **alpino**: License: "Distributed with permission." (FOSS-compatible, but non-standard).
+* **cmudict**: License: "Unrestricted use." (FOSS-compatible, but non-standard).
+* **omw**: License: "Please consult the LICENSE files... Note that all permit redistribution." (This is a known "license trap." While the project's intention is free, the ambiguous summary prevents simple redistribution.)
+* **omw-1.4**: License: "Please consult the LICENSE files... Note that all permit redistribution." (Same as above, a known "license trap" assumed to be free based on community trust).
+* **punkt**: License: Unstated (This package's license is a known issue. While widely assumed to be free, a formal FOSS-compliant license is needed for clarity).
+* **punkt_tab**: License: Unstated (Same as above, assumed free based on community trust).
+* **rslp**: License: Unstated (Implicitly FOSS).
+* **rte**: License: Unstated (Implicitly FOSS).
+* **smultron**: License: Unstated (Likely FOSS-compatible, but needs a clear license).

nonfree_packages_foss.md

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+### Fundamentally Non-Compliant Licenses
+This section lists packages with licenses that explicitly forbid commercial use, restrict distribution, or are otherwise incompatible with FOSS principles.
+
+* **brown**: License: LDC - non-commercial use only.
+* **semcor**: License: LDC - non-commercial use only (annotations by Princeton).
+* **brown_tei**: License: "May be used for non-commercial purposes."
+* **chat80**: License: "only for academic purposes" and forbids commercial use.
+* **conll2007**: License: Creative Commons Attribution-NonCommercial-NoDerivativeWorks.
+* **dependency_treebank**: License: "for non-commercial use only."
+* **floresta**: License: "Non-commercial use only."
+* **framenet_v15**: License: "May be used for non-commercial purposes."
+* **mte_teip5**: License: Creative Commons - Attribution-NonCommercial-ShareAlike 4.0 (Non-Commercial clause).
+* **nps_chat**: License: "solely for non-commercial, non-profit educational and research use."
+* **reuters**: License: "for research purposes only."
+* **sinica_treebank**: License: Creative Commons Attribution-NonCommercial-ShareAlike.
+* **timit**: License: Creative Commons Attribution, Non-Commercial, ShareAlike.
+* **treebank**: License: "for non-commercial use only."
+* **twitter_samples**: License: "Must be used subject to Twitter Developer Agreement."
+* **universal_treebanks_v20**: License: Creative Commons Attribution-NonCommercial-ShareAlike.
+
+### Restricted/Ambiguous Licenses
+This section lists packages with licenses that are either non-standard, require special permission, or are too ambiguous to be considered FOSS-compliant for redistribution.
+
+* **basque_grammars**: License: Unstated (Ambiguous).
+* **bllip_wsj_no_aux**: License: Unstated (Ambiguous).
+* **book_grammars**: License: Unstated (Ambiguous).
+* **conll2000**: License: Unstated (Ambiguous).
+* **conll2002**: License: Unstated (Ambiguous).
+* **europarl_raw**: License: Unstated (Ambiguous).
+* **gazetteers**: License: "GNU Free Documentation License; or public domain (depending on the file)" (Ambiguous).
+* **ieer**: License: Unstated (Ambiguous).
+* **indian**: License: "Distributed with permission" (Ambiguous).
+* **jeita**: License: "re-distributable under the same license as the original" (Ambiguous).
+* **kimmo**: License: Unstated (Ambiguous).
+* **knbc**: License: "re-distributable under the same license as the original" (Ambiguous).
+* **large_grammars**: License: "See the individual grammar files" (Ambiguous).
+* **lin_thesaurus**: License: "Distributed with permission of Dekang Lin" (Restricted).
+* **mac_morpho**: License: "Distributed with permission" (Restricted).
+* **moses_sample**: License: Unstated (Ambiguous).
+* **names**: License: "I retain the copyright... but are freely redistributable." (Ambiguous).
+* **nombank.1.0**: License: "Distributed with permission" (Restricted).
+* **paradigms**: License: "Distributed with the permission of the author" (Restricted).
+* **pe08**: License: "Distributed with permission" (Restricted).
+* **perluniprops**: License: Unstated (Ambiguous).
+* **pil**: License: "Distributed with permission" (Restricted).
+* **propbank**: License: "Distributed with permission" (Restricted).
+* **ppattach**: License: "Distributed with the permission of the author." (Restricted).
+* **qc**: License: Unstated (Ambiguous).
+* **sample_grammars**: License: Unstated (Ambiguous).
+* **senseval**: License: "Distributed with permission." (Restricted).
+* **spanish_grammars**: License: Unstated (Ambiguous).
+* **switchboard**: License: Open Content License (not FOSS).
+* **toolbox**: License: Unstated (Ambiguous).
+* **verbnet**: License: "Distributed with permission of the author." (Restricted).
+* **verbnet3**: License: "Distributed with permission of the author." (Restricted).
+* **ycoe**: License: Unstated (Ambiguous).