feat: init swedish language basic normalization

README.md

@@ -118,10 +118,11 @@ Pipelines are defined declaratively in **YAML presets**. Each preset lists the s
 | `it` | Italian  |
 | `es` | Spanish  |
 | `nl` | Dutch    |
+| `sv` | Swedish  |
 
 Unsupported language codes fall back to a safe default that applies language-independent normalization only.
 
-Adding a new language is self-contained — create a folder, register it with a decorator, done. See [Contributing](#adding-a-new-language).
+Adding a new language is self-contained — create a folder, register it with a decorator, done. See [Contributing](CONTRIBUTING.md#add-support-for-a-new-language).
 
 ## Custom presets
 

docs/contributing-guide.md

@@ -169,8 +169,11 @@ tests/e2e/files/
     default.csv
     de.csv
     en.csv
+    es.csv
     fr.csv
     it.csv
+    nl.csv
+    sv.csv
 ```
 
 **CSV format** — two columns (`input,expected`), no quoting needed unless the value contains a comma:

docs/steps.md

@@ -86,6 +86,9 @@ operators.config.pm_word, operators.config.oclock_word, and
 operators.get_compound_minutes().
 No-op when required config is None.
 
+Regex patterns are compiled once per operators config instance and cached
+on the step to avoid recompilation on every call.
+
 ### `expand_alphanumeric_codes`
 
 **Base class:** `TextStep`
@@ -329,6 +332,10 @@ Handles ¤ markers by processing segments separately.
 
 Remove currency symbols that are not adjacent to numbers.
 
+Single-character symbols use the between/start/end patterns. Each
+multi-character key (e.g. ``kr``) is stripped only when it appears as its own
+token (``\b...\b``), so it is not confused with a substring inside a word.
+
 ### `remove_symbols`
 
 **Base class:** `TextStep`
@@ -376,7 +383,11 @@ No-op when either is None.
 
 **Base class:** `TextStep`
 
-Replace currency symbols with their corresponding words.
+Replace currency symbols with their corresponding words next to amounts.
+
+Reads ``operators.config.currency_symbol_to_word``. Multi-character symbols
+(e.g. ``kr``) are matched with word boundaries so amounts already written as
+``… kronor`` are not parsed as ``… kr`` + ``onor``.
 
 ### `restore_decimal_separator_with_word`
 

normalization/languages/__init__.py

@@ -1,4 +1,4 @@
-from . import dutch, english, finnish, french, german, italian, spanish
+from . import dutch, english, finnish, french, german, italian, spanish, swedish
 from .base import LanguageOperators
 from .registry import get_language_registry, register_language
 
@@ -12,5 +12,6 @@
     "german",
     "italian",
     "spanish",
+    "swedish",
     "get_language_registry",
 ]

normalization/languages/swedish/__init__.py

@@ -0,0 +1,7 @@
+from .operators import SwedishOperators
+from .replacements import SWEDISH_REPLACEMENTS
+
+__all__ = [
+    "SwedishOperators",
+    "SWEDISH_REPLACEMENTS",
+]