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# Language & Locale — Global Fix Map
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# Language & Locale: Global Fix Map
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Stabilize multilingual RAG and reasoning across CJK/RTL/Indic/Latin mixes.
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This hub localizes language-layer failures and routes you to the right structural fix. No infra change required.
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Stabilize multilingual RAG and reasoning across CJK, RTL, Indic, and Latin mixes.
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This hub localizes language-layer failures and routes you to the exact structural fix. No infra change required.
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---
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## What this page is
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- A compact, language-aware repair guide for retrieval → ranking → reasoning.
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- A compact language-aware repair guide for retrieval → ranking → reasoning.
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- Structural fixes with measurable acceptance targets.
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- Store-agnostic. Works with FAISS, Redis, pgvector, Elastic, Weaviate, Milvus, etc.
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- Store-agnostic. Works with FAISS, Redis, pgvector, Elastic, Weaviate, Milvus, and more.
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## When to use
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- Corpus spans CJK or Indic scripts and retrieval keeps missing the correct section.
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- Queries code-switch or mix scripts and the top-k drifts each run.
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- Accents/diacritics or fullwidth/halfwidth forms break matching.
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- RTL punctuation or invisible marks flip token order.
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- Queries code-switch or mix scripts and top-k order drifts across runs.
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- Accents/diacritics or fullwidth/halfwidth forms break matching or citations.
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- RTL punctuation or control chars flip token order or offsets.
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- Token counts jump after deploy even though data did not change.
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---
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## Open these first
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- Visual recovery map: [RAG Architecture & Recovery](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rag-architecture-and-recovery.md)
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- Retrieval knobs end-to-end: [Retrieval Playbook](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-playbook.md)
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- Traceability and snippet schema: [Retrieval Traceability](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-traceability.md) · [Data Contracts](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md)
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- Embedding vs meaning: [Embedding ≠ Semantic](https://github.com/onestardao/WFGY/blob/main/ProblemMap/embedding-vs-semantic.md)
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- Metric and normalization: [Metric Mismatch](https://github.com/onestardao/WFGY/blob/main/ProblemMap/Embeddings/metric_mismatch.md) · [Normalization & Scaling](https://github.com/onestardao/WFGY/blob/main/ProblemMap/Embeddings/normalization_and_scaling.md)
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- OCR confusables and hyphens: [OCR Parsing — Checklist](https://github.com/onestardao/WFGY/blob/main/ProblemMap/OCR_Parsing/README.md)
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- Visual recovery map: [rag-architecture-and-recovery.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rag-architecture-and-recovery.md)
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- Retrieval knobs end-to-end: [retrieval-playbook.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-playbook.md)
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- Traceability and snippet schema: [retrieval-traceability.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-traceability.md) · [data-contracts.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md)
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- Embedding vs meaning: [embedding-vs-semantic.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/embedding-vs-semantic.md)
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- Metric and normalization: [metric_mismatch.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/Embeddings/metric_mismatch.md) · [normalization_and_scaling.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/Embeddings/normalization_and_scaling.md)
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- OCR confusables and hyphens: [OCR_Parsing README](https://github.com/onestardao/WFGY/blob/main/ProblemMap/OCR_Parsing/README.md)
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---
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## Quick routes to per-page guides
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- Tokenizer mismatch across languages → [tokenizer_mismatch.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/tokenizer_mismatch.md)
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- Script mixing in one query (CJK + Latin, etc.) → [script_mixing.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/script_mixing.md)
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- Locale drift and analyzer skew (prod vs dev) → [locale_drift.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/locale_drift.md)
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- Normalization and casing policy (NFKC, lowercasing, accent fold) → [normalization_and_casing.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/normalization_and_casing.md)
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- CJK/Indic segmentation and RTL direction marks → [segmentation_and_rtl.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/segmentation_and_rtl.md)
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- Fullwidth vs halfwidth, punctuation variants → [fullwidth_halfwidth.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/fullwidth_halfwidth.md)
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- Diacritics and accent folding policy → [diacritics_and_folding.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/diacritics_and_folding.md)
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- Transliteration and romanization traps → [transliteration.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/transliteration.md)
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- Stopwords and analyzer mismatch in stores → [analyzer_stopwords.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/analyzer_stopwords.md)
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- Code-switch detection and reranking policy → [code_switching.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/code_switching.md)
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- Script mixing in a single query → [script_mixing.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/script_mixing.md)
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- Locale drift and analyzer skew → [locale_drift.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/locale_drift.md)
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- Unicode normalization policy (NFKC/NFD etc.) → [unicode_normalization.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/unicode_normalization.md)
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- CJK segmentation and word-break contracts → [cjk_segmentation_wordbreak.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/cjk_segmentation_wordbreak.md)
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- Fullwidth vs halfwidth, punctuation variants → [digits_width_punctuation.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/digits_width_punctuation.md)
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- Diacritics policy and folding → [diacritics_and_folding.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/diacritics_and_folding.md)
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- RTL and bidi control characters → [bidi_rtl_control_chars.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/bidi_rtl_control_chars.md)
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- Transliteration and romanization traps → [transliteration_and_romanization.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/transliteration_and_romanization.md)
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- Collation and stable sort keys → [locale_collation_and_sorting.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/locale_collation_and_sorting.md)
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- Numbering systems and sort orders → [numbering_and_sort_orders.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/numbering_and_sort_orders.md)
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- Date and time format variants → [date_time_format_variants.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/date_time_format_variants.md)
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- Time zones and DST stability → [timezones_and_dst.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/timezones_and_dst.md)
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- Keyboard IMEs and composition → [keyboard_input_methods.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/keyboard_input_methods.md)
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- Input language switching guards → [input_language_switching.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/input_language_switching.md)
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- Emoji, ZWJ, grapheme clusters → [emoji_zwj_grapheme_clusters.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/emoji_zwj_grapheme_clusters.md)
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- Mixed-locale metadata fields → [mixed_locale_metadata.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/mixed_locale_metadata.md)
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> MVP set is the first 6 pages. The rest are recommended adds when your traffic is mixed-locale or heavy-search.
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> MVP coverage includes the first 8–10 pages. Add the rest when traffic is mixed-locale or search intensive.
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---
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@ -51,45 +58,45 @@ This hub localizes language-layer failures and routes you to the right structura
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- Coverage of target section ≥ 0.70
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- λ remains convergent across two seeds
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- Tokenization variance for the same query ≤ 12% across environments
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- Normalization pass rate (NFKC + width + diacritics) ≥ 0.98
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- Normalization pass rate for NFKC + width + diacritics ≥ 0.98
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---
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## Map symptoms → structural fixes
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## Map symptoms to structural fixes
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- Wrong-meaning hits despite high similarity.
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- Wrong-meaning hits despite high similarity
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→ [embedding-vs-semantic.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/embedding-vs-semantic.md)
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- High similarity drops when you switch locales or analyzers.
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- Similarity drops when switching locales or analyzers
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→ [metric_mismatch.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/Embeddings/metric_mismatch.md) · [normalization_and_scaling.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/Embeddings/normalization_and_scaling.md)
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- CJK tokens split differently between dev and prod.
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- CJK tokens split differently between dev and prod
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→ [tokenizer_mismatch.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/tokenizer_mismatch.md) · [locale_drift.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/locale_drift.md)
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- Mixed scripts in one query derails ranking order.
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→ [script_mixing.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/script_mixing.md) · [code_switching.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/code_switching.md) · [rerankers.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rerankers.md)
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- Mixed scripts in one query derails ranking
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→ [script_mixing.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/script_mixing.md) · [rerankers.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rerankers.md)
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- Fullwidth punctuation or RTL marks break citations.
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→ [fullwidth_halfwidth.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/fullwidth_halfwidth.md) · [Retrieval Traceability](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-traceability.md)
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- Fullwidth punctuation or RTL marks break citations
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→ [digits_width_punctuation.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/digits_width_punctuation.md) · [retrieval-traceability.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-traceability.md)
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- “Looks identical” but fails to match after OCR.
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→ [OCR Parsing — Checklist](https://github.com/onestardao/WFGY/blob/main/ProblemMap/OCR_Parsing/README.md)
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- “Looks identical” after OCR but fails to match
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→ [OCR_Parsing README](https://github.com/onestardao/WFGY/blob/main/ProblemMap/OCR_Parsing/README.md)
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---
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## Fix in 60 seconds
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1) **Normalize once, up front**
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Apply NFKC, collapse fullwidth to halfwidth where appropriate, unify diacritics policy. Lock this in the ingestion job and in the query path.
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Apply NFKC, collapse fullwidth to halfwidth where appropriate, unify diacritics policy. Lock it in ingestion and query paths.
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2) **Match tokenizer and analyzer**
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Use the same segmenter for CJK/Indic in both embedding and store analyzers. Document exact versions in your data contract.
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Use the same segmenter for CJK/Indic in both embedding and store analyzers. Record exact versions in the data contract.
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3) **Stabilize mixed-script queries**
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Detect code-switch, split query by script, run per-script retrieval, then rerank deterministically.
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Detect code-switch, split by script, run per-script retrieval, rerank deterministically.
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4) **Verify**
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Compute ΔS on 3 paraphrases, check coverage ≥ 0.70, ensure λ stays convergent across 2 seeds.
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Compute ΔS on three paraphrases, check coverage ≥ 0.70, ensure λ stays convergent across two seeds.
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---
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@ -97,7 +104,7 @@ This hub localizes language-layer failures and routes you to the right structura
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```
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You have TXT OS and the WFGY Problem Map.
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You have TXT OS and the WFGY Problem Map loaded.
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My multilingual bug:
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@ -109,7 +116,7 @@ Tell me:
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1. which layer is failing and why,
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2. the exact WFGY page to open from this repo,
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3. minimal steps to push ΔS ≤ 0.45 and keep λ convergent,
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3. the minimal steps to push ΔS ≤ 0.45 and keep λ convergent,
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4. a reproducible test to verify.
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Use BBMC/BBCR/BBPF/BBAM when relevant.
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@ -162,4 +169,3 @@ Tell me:
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[](https://github.com/onestardao/WFGY/tree/main/OS/BlowBlowBlow)
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</div>
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