Create digits_width_punctuation.md

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+# Digits, Width, and Punctuation — Guardrails and Fix Pattern
+
+Stabilize retrieval when **digits**, **character width**, and **punctuation variants** silently change tokenization and ranking. This page aligns numeric classes, width folding, quotes/hyphens, and exotic spaces across ingest → index → query → display.
+
+## Open these first
+- Visual map and recovery: [RAG Architecture & Recovery](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rag-architecture-and-recovery.md)
+- End-to-end retrieval knobs: [Retrieval Playbook](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-playbook.md)
+- 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)
+- Tokenizers and normalization: [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)
+- Reranking strategies: [rerankers.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rerankers.md)
+
+## When to use
+- **Arabic-Indic digits** or **CJK fullwidth digits** never match Latin digits.
+- Smart quotes, em/en/quasi hyphens, or dashes break phrase matching or offsets.
+- Thousands separators vary by locale (`,` vs `.` vs NBSP) and kill numeric recall.
+- Halfwidth vs fullwidth punctuation breaks token boundaries and citations.
+- Mixed unit formats (`1,234.56` vs `1 234,56`) return different snippets.
+
+## Core acceptance
+- ΔS(question, retrieved) ≤ **0.45** on three paraphrases  
+- Coverage ≥ **0.70** to the correct section  
+- λ remains **convergent** across two seeds  
+- **Offset parity**: citation offsets match visible glyphs after normalization  
+- **Numeric fold pass rate** ≥ **0.98** on a 200-sample mixed-locale set
+
+---
+
+## 60-second checklist
+
+1) **Digit class fold**
+   - Map Arabic-Indic and other locale digits to ASCII `0–9` in a **search_text** view.
+   - Keep **visual_text** unchanged for display. Store both. See [Data Contracts](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md).
+
+2) **Width fold**
+   - Convert **fullwidth** Latin letters, digits, and punctuation to **halfwidth** in `search_text`.  
+   - Log a `width_fold=true|false` flag in snippet metadata. See [locale_drift.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/locale_drift.md).
+
+3) **Punctuation normalization**
+   - Quotes: map “ ” ‘ ’ to " ' for search view; keep raw in display.
+   - Hyphens/dashes: map U+2010..U+2015 to ASCII `-` in search view; track original in trace.
+   - Spaces: collapse NBSP, NNBSP, thin/narrow spaces to ASCII space for search.
+
+4) **Number normalization**
+   - Normalize thousands and decimal separators by locale rules into a canonical numeric token for search.  
+   - Keep raw string for display; store a `numeric_norm` field per snippet.
+
+5) **Analyzer parity**
+   - Ensure store analyzers (BM25/ES/OpenSearch) apply the **same** width/digit/punct rules as embedding pre-processing.
+
+6) **Verify**
+   - Three paraphrases, two seeds. Check ΔS, coverage, λ. Validate offsets visually.
+
+---
+
+## Symptom map → exact fix
+
+| Symptom | Likely cause | Open this |
+|---|---|---|
+| `١٢٣٤` fails to match `1234` | digit classes differ | [locale_drift.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/locale_drift.md) • [retrieval-playbook.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-playbook.md) |
+| `１２３４` (fullwidth) misses `1234` | width fold missing | [tokenizer_mismatch.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/tokenizer_mismatch.md) |
+| “quoted phrase” not found | smart quotes not normalized | [locale_drift.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/locale_drift.md) |
+| `co-founder` vs `co-founder` mismatch | hyphen/dash variants differ | [tokenizer_mismatch.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/tokenizer_mismatch.md) |
+| `1 234,56` vs `1,234.56` mismatch | thousands/decimal separators differ | [retrieval-traceability.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-traceability.md) |
+| Offsets jump after PDF/OCR | NBSP/soft hyphen/ZWJ artifacts | [OCR Parsing Checklist](https://github.com/onestardao/WFGY/blob/main/ProblemMap/ocr-parsing-checklist.md) |
+
+---
+
+## Minimal field plan
+
+- `visual_text`: original text for display/citation.  
+- `search_text`: NFC+width fold+digit fold+punct fold+space fold.  
+- `numeric_norm`: canonical numbers extracted from `search_text` when present.  
+- Trace fields: `unicode_form`, `width_fold`, `digit_class`, `punct_fold`, `space_class`.
+
+---
+
+## Store notes
+
+- **Elasticsearch/OpenSearch**: pin analyzers in index template; apply char filters for digit/width/quotes/hyphens; verify analyzer in both ingest and query.  
+- **Vector stores**: embed `search_text`; keep `visual_text` only for display and exact citation strings.  
+- **Hybrid pipelines**: run BM25 over `search_text`, then cross-encoder rerank on raw snippets to protect nuance.
+
+---
+
+## Repro test (gold set outline)
+
+1) Build a 50-item set mixing Arabic-Indic digits, fullwidth digits, smart quotes, multiple hyphens, NBSP, and locale number formats.  
+2) Run retrieval before/after normalization; compute ΔS and coverage.  
+3) Manually verify top-1 offsets against `visual_text`.  
+4) Accept if ΔS ≤ 0.45, coverage ≥ 0.70, λ convergent, and offsets stable.
+
+---
+
+## Copy-paste prompt
+
+```
+
+You have TXT OS and the WFGY Problem Map.
+
+My bug: digits/width/punctuation drift.
+Traces: ΔS=..., coverage=..., λ=..., examples: {١٢٣٤ vs 1234, １２３４ vs 1234, “ ” vs " ", co- vs co-}.
+
+Tell me:
+
+1. failing normalization step and why,
+2. exact WFGY pages to open,
+3. minimal changes to push ΔS ≤ 0.45 and keep λ convergent,
+4. a 50-item gold test to verify, including offset checks.
+
+```
+
+---
+
+### 🔗 Quick-Start Downloads (60 sec)
+
+| Tool | Link | 3-Step Setup |
+|------|------|--------------|
+| **WFGY 1.0 PDF** | [Engine Paper](https://github.com/onestardao/WFGY/blob/main/I_am_not_lizardman/WFGY_All_Principles_Return_to_One_v1.0_PSBigBig_Public.pdf) | 1️⃣ Download · 2️⃣ Upload to your LLM · 3️⃣ Ask “Answer using WFGY + \<your question>” |
+| **TXT OS (plain-text OS)** | [TXTOS.txt](https://github.com/onestardao/WFGY/blob/main/OS/TXTOS.txt) | 1️⃣ Download · 2️⃣ Paste into any LLM chat · 3️⃣ Type “hello world” — OS boots instantly |
+
+---
+
+### 🧭 Explore More
+
+| Module                | Description                                              | Link     |
+|-----------------------|----------------------------------------------------------|----------|
+| WFGY Core             | WFGY 2.0 engine is live: full symbolic reasoning architecture and math stack | [View →](https://github.com/onestardao/WFGY/tree/main/core/README.md) |
+| Problem Map 1.0       | Initial 16-mode diagnostic and symbolic fix framework    | [View →](https://github.com/onestardao/WFGY/tree/main/ProblemMap/README.md) |
+| Problem Map 2.0       | RAG-focused failure tree, modular fixes, and pipelines   | [View →](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rag-architecture-and-recovery.md) |
+| Semantic Clinic Index | Expanded failure catalog: prompt injection, memory bugs, logic drift | [View →](https://github.com/onestardao/WFGY/blob/main/ProblemMap/SemanticClinicIndex.md) |
+| Semantic Blueprint    | Layer-based symbolic reasoning & semantic modulations   | [View →](https://github.com/onestardao/WFGY/tree/main/SemanticBlueprint/README.md) |
+| Benchmark vs GPT-5    | Stress test GPT-5 with full WFGY reasoning suite         | [View →](https://github.com/onestardao/WFGY/tree/main/benchmarks/benchmark-vs-gpt5/README.md) |
+| 🧙‍♂️ Starter Village 🏡 | New here? Lost in symbols? Click here and let the wizard guide you through | [Start →](https://github.com/onestardao/WFGY/blob/main/StarterVillage/README.md) |
+
+---
+
+> 👑 **Early Stargazers: [See the Hall of Fame](https://github.com/onestardao/WFGY/tree/main/stargazers)** —  
+> Engineers, hackers, and open source builders who supported WFGY from day one.
+
+> <img src="https://img.shields.io/github/stars/onestardao/WFGY?style=social" alt="GitHub stars"> ⭐ [WFGY Engine 2.0](https://github.com/onestardao/WFGY/blob/main/core/README.md) is already unlocked. ⭐ Star the repo to help others discover it and unlock more on the [Unlock Board](https://github.com/onestardao/WFGY/blob/main/STAR_UNLOCKS.md).
+
+<div align="center">
+
+[![WFGY Main](https://img.shields.io/badge/WFGY-Main-red?style=flat-square)](https://github.com/onestardao/WFGY)
+&nbsp;
+[![TXT OS](https://img.shields.io/badge/TXT%20OS-Reasoning%20OS-orange?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS)
+&nbsp;
+[![Blah](https://img.shields.io/badge/Blah-Semantic%20Embed-yellow?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlahBlahBlah)
+&nbsp;
+[![Blot](https://img.shields.io/badge/Blot-Persona%20Core-green?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlotBlotBlot)
+&nbsp;
+[![Bloc](https://img.shields.io/badge/Bloc-Reasoning%20Compiler-blue?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlocBlocBloc)
+&nbsp;
+[![Blur](https://img.shields.io/badge/Blur-Text2Image%20Engine-navy?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlurBlurBlur)
+&nbsp;
+[![Blow](https://img.shields.io/badge/Blow-Game%20Logic-purple?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlowBlowBlow)
+&nbsp;
+</div>