feat(bangs): add bang counter dashboard widget

Adds a new "bangs" module with a dashboard widget that tracks household
bang events. The widget shows the total count, a configurable recent-bang
list, and an "Add Bang" button that accepts a backdatable date.

On submission, a full celebration sequence fires: screen flash, widget
shake, count pop animation, synthesized firework sound (Web Audio API),
50 full-screen emoji particles via portal, canvas-confetti star bursts,
side cannons, and a timed sequence of 7 firework bursts.

- New bang_events table (migration 0017)
- canvas-confetti dependency for fireworks/confetti effects
- CSS keyframe animations: shake, countPop, emojiFloat
- Fixes pre-existing Drizzle snapshot chain collision (0007/0008)
- Adds OpenPlantBook env vars to compose.yaml

drizzle/0017_bang_counter.sql

@@ -0,0 +1,13 @@
+CREATE TABLE "bang_events" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"household_id" uuid NOT NULL,
+	"recorded_by" uuid,
+	"occurred_on" text NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+ALTER TABLE "bang_events" ADD CONSTRAINT "bang_events_household_id_households_id_fk" FOREIGN KEY ("household_id") REFERENCES "public"."households"("id") ON DELETE cascade ON UPDATE no action;
+--> statement-breakpoint
+ALTER TABLE "bang_events" ADD CONSTRAINT "bang_events_recorded_by_users_id_fk" FOREIGN KEY ("recorded_by") REFERENCES "public"."users"("id") ON DELETE set null ON UPDATE no action;
+--> statement-breakpoint
+CREATE INDEX "bang_events_household_occurred_idx" ON "bang_events" USING btree ("household_id","occurred_on");