Add ActionCampaign + Document models for volunteer dashboard

Foundation schema for the FAFC-style volunteer dashboard. Adds:
- ActionCampaign / ActionStep / ActionStepCompletion (stacked-action
  mini-campaigns where steps reference existing entities like videos,
  petitions, ticketed events; completion is detected at query time
  against the per-user model for each step kind)
- Document model for downloadable resources (PDFs etc.) — Photo's
  EXIF/sharp pipeline can't host non-image files
- Shift.kind discriminator (ShiftKind enum) so training shifts can
  surface separately on the dashboard
- TicketedEvent.featured for the "Take Action" CTA tile

Bunker Admin

api/prisma/migrations/20260410200000_volunteer_dashboard_action_campaigns/migration.sql

@@ -0,0 +1,130 @@
+
+-- CreateEnum
+CREATE TYPE "ShiftKind" AS ENUM ('CANVASS', 'TRAINING', 'EVENT_STAFFING', 'PHONE_BANK', 'OTHER');
+
+-- CreateEnum
+CREATE TYPE "ActionStepKind" AS ENUM ('WATCH_VIDEO', 'SUBMIT_INFLUENCE', 'SIGN_PETITION', 'RSVP_EVENT', 'SIGNUP_SHIFT', 'JOIN_CHALLENGE', 'VISIT_LINK', 'CUSTOM');
+
+-- CreateEnum
+CREATE TYPE "ActionStepCompletionSource" AS ENUM ('AUTO', 'SELF_REPORTED');
+
+-- AlterTable
+ALTER TABLE "shifts" ADD COLUMN     "kind" "ShiftKind" NOT NULL DEFAULT 'CANVASS';
+
+-- AlterTable
+ALTER TABLE "ticketed_events" ADD COLUMN     "featured" BOOLEAN NOT NULL DEFAULT false;
+
+-- CreateTable
+CREATE TABLE "action_campaigns" (
+    "id" TEXT NOT NULL,
+    "slug" TEXT NOT NULL,
+    "title" TEXT NOT NULL,
+    "description" TEXT,
+    "reward_text" TEXT,
+    "is_active" BOOLEAN NOT NULL DEFAULT false,
+    "starts_at" TIMESTAMP(3),
+    "ends_at" TIMESTAMP(3),
+    "min_steps_for_reward" INTEGER,
+    "created_by_user_id" TEXT,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "action_campaigns_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "action_steps" (
+    "id" TEXT NOT NULL,
+    "campaign_id" TEXT NOT NULL,
+    "order" INTEGER NOT NULL,
+    "kind" "ActionStepKind" NOT NULL,
+    "label" TEXT NOT NULL,
+    "description" TEXT,
+    "target_id" TEXT,
+    "target_url" TEXT,
+    "auto_complete" BOOLEAN NOT NULL DEFAULT true,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "action_steps_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "action_step_completions" (
+    "id" TEXT NOT NULL,
+    "user_id" TEXT NOT NULL,
+    "step_id" TEXT NOT NULL,
+    "source" "ActionStepCompletionSource" NOT NULL DEFAULT 'AUTO',
+    "completed_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "action_step_completions_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "documents" (
+    "id" TEXT NOT NULL,
+    "path" TEXT NOT NULL,
+    "filename" TEXT NOT NULL,
+    "original_filename" TEXT,
+    "title" TEXT,
+    "description" TEXT,
+    "mime_type" TEXT NOT NULL,
+    "file_size" BIGINT,
+    "page_count" INTEGER,
+    "thumbnail_path" TEXT,
+    "category" TEXT,
+    "tags" JSONB,
+    "is_published" BOOLEAN NOT NULL DEFAULT true,
+    "position" INTEGER DEFAULT 0,
+    "uploader_id" TEXT,
+    "download_count" INTEGER NOT NULL DEFAULT 0,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "documents_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "action_campaigns_slug_key" ON "action_campaigns"("slug");
+
+-- CreateIndex
+CREATE INDEX "idx_action_campaigns_active" ON "action_campaigns"("is_active");
+
+-- CreateIndex
+CREATE INDEX "idx_action_steps_campaign" ON "action_steps"("campaign_id");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "action_steps_campaign_id_order_key" ON "action_steps"("campaign_id", "order");
+
+-- CreateIndex
+CREATE INDEX "idx_action_step_completions_user" ON "action_step_completions"("user_id");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "action_step_completions_user_id_step_id_key" ON "action_step_completions"("user_id", "step_id");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "documents_path_key" ON "documents"("path");
+
+-- CreateIndex
+CREATE INDEX "idx_documents_published" ON "documents"("is_published");
+
+-- CreateIndex
+CREATE INDEX "idx_documents_category" ON "documents"("category");
+
+-- CreateIndex
+CREATE INDEX "idx_documents_created_at" ON "documents"("created_at");
+
+-- AddForeignKey
+ALTER TABLE "action_campaigns" ADD CONSTRAINT "action_campaigns_created_by_user_id_fkey" FOREIGN KEY ("created_by_user_id") REFERENCES "users"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "action_steps" ADD CONSTRAINT "action_steps_campaign_id_fkey" FOREIGN KEY ("campaign_id") REFERENCES "action_campaigns"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "action_step_completions" ADD CONSTRAINT "action_step_completions_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "users"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "action_step_completions" ADD CONSTRAINT "action_step_completions_step_id_fkey" FOREIGN KEY ("step_id") REFERENCES "action_steps"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "documents" ADD CONSTRAINT "documents_uploader_id_fkey" FOREIGN KEY ("uploader_id") REFERENCES "users"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+