Add map wrangle for semantic column name mapping

[Copilot]

Implements automatic column renaming using semantic similarity, providing programmatic equivalent of Wrangles XL's manual column mapping UI.

Implementation

• Similarity algorithm: difflib.SequenceMatcher calculates text similarity ratios between current and target column names
• Matching strategy: Greedy best-match-first; each target column used once, highest similarity wins
• Configurable parameters:
  • to: Target column name(s) - required
  • threshold: Minimum similarity ratio (0-1), default 0.6
  • case_sensitive: Boolean, default False
• Behavior: Columns below threshold retain original names

Usage

wrangles:
  - map:
      to:
        - Product Name
        - Product Code  
        - Manufacturer
      threshold: 0.5

Maps columns like product_name → Product Name, prod_code → Product Code based on similarity scores. Unmapped columns (e.g., xyz) remain unchanged.

Testing

Added 9 test cases covering threshold behavior, case sensitivity, single/multiple targets, partial matching, and greedy allocation when multiple columns compete for the same target.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Map</issue_title>
<issue_description>Just as with Wrangles XL, create a map wrangle for Wrangles PY.</issue_description>

<agent_instructions>Create a new wrangle called map that uses semantic similarity to automatically map input column names to a user defined list of column names.
Add tests for the new map wrangle that cover all use cases.
The new wrangle should be defined in wrangles/recipe_wrangles/main.py</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@thomasstvr Is this not the same as rename? @ChrisWRWX I was more thinking of adding the possibility to use the equivalent of the magic button to auto-map the columns. Doing it manually is effectively just rename as you say. @ebhills similarity / rename / semantic lup @thomasstvr Requirements: - Create a new wrangle called map that uses semantic similarity to automatically map input column names to a user defined list of column names. - Add tests for the new map wrangle that cover all use cases. - The new wrangle should be defined in wrangles/recipe_wrangles/main.py

• Fixes Map #320

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[ebhills]

Queue triage (2026-07-27): closing this Copilot draft as the duplicate implementation for issue #320. Continue the scoped design/implementation discussion on #905 (or return it to #320 if a clean rebuild is chosen).