Align image eval OCR text with flyer prompt

[sylvesterkaczmarek]

Summary

• Align the coffee-flyer OCR oracle with the exact text required by COFFEE_PROMPT.
• Replace the two punctuation variants in REQUIRED_TEXT with the prompt's literal hyphenated strings.

Motivation

The prompt explicitly requires these exact lines:

• 20% OFF - Mon-Thu
• 123 Market St - 7am-6pm

But the OCR check currently expects bullet separators and en-dashes instead. Because add_ocr_text_check() compares extracted lines by exact set equality, a flyer that follows the generation prompt perfectly can still be marked as missing the expected OCR text and containing extra text.

The oracle should use the same literal strings as the task it is grading.

Validation

This changes only two entries in REQUIRED_TEXT:

• prompt-compliant text now matches the OCR oracle exactly
• OCR set-comparison logic is unchanged
• model, judge, image generation, and reporting behavior are unchanged

Self-review

• Two-line correctness fix in one file.
• No API, dependency, notebook, registry, or documentation changes.
• Searched open PRs for an existing OCR required-text fix and found none.

Maintainers may modify the branch if needed.