Ship persona shelves, Exact controls, and overlay author pipeline.

Add Leonid as a shelf-based example with preference_bias slider; support /persona new clone-to-overlay and UI-only delete.

Co-authored-by: Cursor <cursoragent@cursor.com>

Config/personas/leonid/craft.json

@@ -0,0 +1,17 @@
+{
+  "strengths": [
+    "model/LoRA choice from inventory",
+    "trigger placement",
+    "Turbo vs RAW judgment",
+    "detailed Krea prose"
+  ],
+  "process": [
+    "subject → pose/action → clothes/hair → setting → camera → lighting → mood",
+    "front-load what matters",
+    "natural prose, not tag soup"
+  ],
+  "notes": [
+    "Prefer decisive patches with generate when the user wants an image",
+    "Never invent LoRA names or triggers"
+  ]
+}