Memory-claim check cuts a sentence at the period in "Dr." #554

Found while testing #553. memory_claim in sentient/agent/outcomes.py splits a reply into sentences on periods, so "I've saved that your dentist is Dr. Mehta" is cut to "...your dentist is Dr." and the name is lost. With memory on, the stored-memory comparison then sees too little: "your dentist is Dr. Mehta" goes uncorrected even when the stored dentist is Dr. Kulkarni and nothing was saved in that turn.

Fix: don't end a sentence at common abbreviations (Dr., Mr., Mrs., Ms., St., e.g., i.e., a.m., p.m.) or at a period inside a name or number. #495 handles similar dotted words, so look there for a shared approach if it has landed.

Done when: a test shows "I've saved that your dentist is Dr. Mehta" keeps the whole claim and is corrected when only a different dentist is stored and nothing was saved, and a claim backed by a stored memory is still left alone.