It Notices When You've Been Quiet
You mentioned Marcus started a new job six weeks ago and you'd planned to grab coffee once he settled in. It's been six weeks. Aether gently flags it: "It's been 47 days since you talked to Marcus. He started his new role in September — might be a good time to check in." It's not a notification. It's a quiet observation, there when you want it.
Aether learns which relationships matter most to you — not by asking you to rank your friends, but by noticing who you talk about, how often, and with what kind of energy.