backend: add per-clinic staff specialty (Care Team -> patient sheet)

New staff_profile table (org + user, unique) holding a clinician's clinical
specialty. GET /api/staff and /api/staff/providers now include specialty; new
PATCH /api/staff/:userId (member:update) upserts it. Migration 0023.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/drizzle/0023_panoramic_punisher.sql

@@ -0,0 +1,10 @@
+CREATE TABLE "staff_profile" (
+	"organization_id" text NOT NULL,
+	"user_id" text NOT NULL,
+	"specialty" text,
+	"updated_at" timestamp DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+ALTER TABLE "staff_profile" ADD CONSTRAINT "staff_profile_organization_id_organization_id_fk" FOREIGN KEY ("organization_id") REFERENCES "public"."organization"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "staff_profile" ADD CONSTRAINT "staff_profile_user_id_user_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."user"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+CREATE UNIQUE INDEX "staff_profile_org_user_idx" ON "staff_profile" USING btree ("organization_id","user_id");

backend/drizzle/meta/_journal.json

@@ -162,6 +162,13 @@
       "when": 1781802557475,
       "tag": "0022_damp_synch",
       "breakpoints": true
+    },
+    {
+      "idx": 23,
+      "version": "7",
+      "when": 1781889806890,
+      "tag": "0023_panoramic_punisher",
+      "breakpoints": true
     }
   ]
 }