Prompt entity mismatch

[achimala]

Correctly matches entities within compound words to prevent incorrect fuzzy entity resolution.

Previously, the entity resolver only matched whole words, causing entities like "darien" to be missed in compound terms like "superdarien". This could lead to an unrelated entity (e.g., "cody") being selected via fuzzy matching. The update introduces substring matching for compound words with safeguards to avoid false positives and typo matches.

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[cursor]

Cursor Agent can help with this pull request. Just @cursor in comments and I'll start working on changes in this branch.
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[achimala]

@cursoragent i don't understand. can you explain? "Darien" was in the prompt why didn't that entity match? why did cody match?

[cursor]

Explanation

"Darien" should have matched exactly

The prompt contains "Darien" twice. The matching logic:

1. Extracts words: ["samebot", "draw", "Darien", ..., "superdarien", ..., "Darien", ...]
2. Normalizes "Darien" → "darien" (lowercase, punctuation removed)
3. Checks for an exact match against entity folder names

If there's an entity folder named "darien" (case-insensitive), "Darien" should match exactly with a score of 1.0.

Why "cody" might have matched instead

Before the fix, if "Darien" didn't match (e.g., entity folder name mismatch or normalization issue), the word "superdarien" would:

1. Not match "darien" exactly (it's a different word)
2. Not match "darien" as a substring (that logic didn't exist)
3. Go through fuzzy matching, which could incorrectly match "cody" if it was the closest match

The fix

The fix adds substring matching so "superdarien" matches "darien" as a substring. This ensures:

• "Darien" matches exactly (if the entity exists)
• "superdarien" matches "darien" as a substring (not "cody")
• Both contribute to matching "darien", preventing incorrect fuzzy matches

To debug further

Check:

1. What is the exact name of the "darien" entity folder in your database?
2. Are there any aliases configured for "darien" or "cody"?
3. What was the actual matched entity in the logs?

The fix should prevent "cody" from matching when "darien" is present in the prompt, but if "Darien" didn't match exactly, that suggests a separate issue (folder naming or normalization).