Create Insight Generation Feature

Added integration with Messages API and Ollama

migrations/2025-12-31-000000_add_ai_insights/up.sql

@@ -0,0 +1,11 @@
+-- AI-generated insights for individual photos
+CREATE TABLE IF NOT EXISTS photo_insights (
+    id INTEGER PRIMARY KEY NOT NULL,
+    file_path TEXT NOT NULL UNIQUE,  -- Full path to the photo
+    title TEXT NOT NULL,              -- "At the beach with Sarah"
+    summary TEXT NOT NULL,            -- 2-3 sentence description
+    generated_at BIGINT NOT NULL,
+    model_version TEXT NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_photo_insights_path ON photo_insights(file_path);