Wider ranges, an agent guide, patch and effects commands

Every effect's sliders and clamps now reach far (a nudge from a tremor
to an earthquake, a banner that stays minutes). AGENTS.md documents the
file schema, every option and range, the CLI, verification and worked
scenarios for scripts and coding agents; attention-required effects
prints the catalog as JSON, patch merges keys into a rule, docs prints
the guide.

Blink.qml

@@ -26,9 +26,9 @@ Item {
 
   function trigger(opts, notif, rule) {
     opts = opts || {}
-    var duration = number(opts.duration, 1, 0.2, 5)
-    var speed = number(opts.speed, 2, 1, 10)
-    darkness = number(opts.intensity, 0.6, 0.1, 1)
+    var duration = number(opts.duration, 1, 0.1, 30)
+    var speed = number(opts.speed, 2, 0.2, 30)
+    darkness = number(opts.intensity, 0.6, 0.01, 1)
     pulseMs = Math.round(1000 / speed)
     anim.stop()
     level = 0