diff --git a/supabase/migrations/20260807001400_vacation.sql b/supabase/migrations/20260807001400_vacation.sql
deleted file mode 100644
index 61c6e24..0000000
--- a/supabase/migrations/20260807001400_vacation.sql
+++ /dev/null
@@ -1,300 +0,0 @@
--- Vacation balances and requests — spec section 18.
---
--- "Full-time, year-round students receive four full weeks" is the default, not
--- a constant: section 18 requires the rules to be configurable, so the four
--- weeks live in vacation_policies and can be overridden per campus.
---
--- "Prevents duplicate use" is enforced by an exclusion constraint rather than
--- application logic — two approved vacations for one student cannot overlap
--- even if two administrators approve simultaneously.
-
-CREATE EXTENSION IF NOT EXISTS btree_gist;
-
--- ============================================================================
--- 1. POLICIES
--- ============================================================================
-
-CREATE TABLE IF NOT EXISTS public.vacation_policies (
-  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-  name TEXT NOT NULL,
-  -- NULL campus = organization-wide default.
-  campus_id UUID REFERENCES public.campuses(id) ON DELETE CASCADE,
-
-  weeks_per_year NUMERIC(4,2) NOT NULL DEFAULT 4 CHECK (weeks_per_year >= 0),
-
-  -- NULL on either means "applies to all".
-  applies_to_calendar_basis TEXT,
-  applies_to_attendance_basis TEXT,
-
-  partial_weeks_allowed BOOLEAN NOT NULL DEFAULT FALSE,
-  -- Smallest bookable unit in days: 5 = whole weeks only, 1 = single days.
-  min_increment_days SMALLINT NOT NULL DEFAULT 5 CHECK (min_increment_days > 0),
-
-  -- Whether tuition still accrues while a student is on vacation.
-  tuition_due_during_vacation BOOLEAN NOT NULL DEFAULT TRUE,
-
-  -- Where the vacation year turns over.
-  reset_month SMALLINT NOT NULL DEFAULT 8 CHECK (reset_month BETWEEN 1 AND 12),
-  reset_day SMALLINT NOT NULL DEFAULT 1 CHECK (reset_day BETWEEN 1 AND 31),
-
-  is_active BOOLEAN NOT NULL DEFAULT TRUE,
-  priority INTEGER NOT NULL DEFAULT 100,
-  notes TEXT,
-  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-
-  CONSTRAINT vp_calendar_valid
-    CHECK (applies_to_calendar_basis IS NULL
-           OR applies_to_calendar_basis IN ('year_round','school_year')),
-  CONSTRAINT vp_attendance_valid
-    CHECK (applies_to_attendance_basis IS NULL
-           OR applies_to_attendance_basis IN ('full_time','part_time'))
-);
-
-GRANT SELECT, INSERT, UPDATE, DELETE ON public.vacation_policies TO authenticated;
-GRANT ALL ON public.vacation_policies TO service_role;
-ALTER TABLE public.vacation_policies ENABLE ROW LEVEL SECURITY;
-CREATE INDEX IF NOT EXISTS vp_campus_idx ON public.vacation_policies (campus_id);
-
-DROP TRIGGER IF EXISTS trg_vp_upd ON public.vacation_policies;
-CREATE TRIGGER trg_vp_upd BEFORE UPDATE ON public.vacation_policies
-  FOR EACH ROW EXECUTE FUNCTION public.set_updated_at();
-
--- The directive's stated default, as data.
-INSERT INTO public.vacation_policies
-  (name, weeks_per_year, applies_to_calendar_basis, applies_to_attendance_basis, notes)
-SELECT 'Full-time year-round — four weeks', 4, 'year_round', 'full_time',
-       'Spec section 18 default. Edit rather than replace; students reference the resolved policy.'
-WHERE NOT EXISTS (
-  SELECT 1 FROM public.vacation_policies WHERE name = 'Full-time year-round — four weeks'
-);
-
--- Most specific active policy for a student.
-CREATE OR REPLACE FUNCTION public.resolve_vacation_policy(_student UUID)
-RETURNS public.vacation_policies
-LANGUAGE SQL STABLE SECURITY DEFINER SET search_path = public
-AS $$
-  SELECT p.*
-  FROM public.vacation_policies p
-  JOIN public.students s ON s.id = _student
-  WHERE p.is_active
-    AND (p.campus_id IS NULL OR p.campus_id = s.primary_campus_id)
-    AND (p.applies_to_calendar_basis IS NULL OR p.applies_to_calendar_basis = s.calendar_basis)
-    AND (p.applies_to_attendance_basis IS NULL OR p.applies_to_attendance_basis = s.attendance_basis)
-  ORDER BY p.priority DESC, (p.campus_id IS NOT NULL) DESC
-  LIMIT 1
-$$;
-
--- ============================================================================
--- 2. REQUESTS
--- ============================================================================
-
-CREATE TABLE IF NOT EXISTS public.vacation_requests (
-  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-  student_id UUID NOT NULL REFERENCES public.students(id) ON DELETE CASCADE,
-  policy_year INTEGER NOT NULL,
-
-  start_date DATE NOT NULL,
-  end_date DATE NOT NULL,
-  -- Charged against the balance. Stored rather than derived so an authorized
-  -- partial-week approval can differ from the raw day count.
-  weeks_charged NUMERIC(4,2) NOT NULL DEFAULT 1 CHECK (weeks_charged >= 0),
-
-  status TEXT NOT NULL DEFAULT 'pending',
-  -- Snapshot of the policy at approval, so a later policy edit cannot silently
-  -- change whether an already-taken vacation was billable.
-  tuition_due BOOLEAN NOT NULL DEFAULT TRUE,
-
-  reason TEXT,
-  requested_by UUID REFERENCES auth.users(id) ON DELETE SET NULL,
-  approved_by UUID REFERENCES auth.users(id) ON DELETE SET NULL,
-  approved_at TIMESTAMPTZ,
-  notes TEXT,
-
-  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-
-  CONSTRAINT vr_status_valid CHECK (status IN ('pending','approved','denied','cancelled')),
-  CONSTRAINT vr_dates_ordered CHECK (start_date <= end_date),
-
-  -- No student may hold two approved vacations covering the same day.
-  CONSTRAINT vr_no_overlap EXCLUDE USING gist (
-    student_id WITH =,
-    daterange(start_date, end_date, '[]') WITH &&
-  ) WHERE (status = 'approved')
-);
-
-GRANT SELECT, INSERT, UPDATE, DELETE ON public.vacation_requests TO authenticated;
-GRANT ALL ON public.vacation_requests TO service_role;
-ALTER TABLE public.vacation_requests ENABLE ROW LEVEL SECURITY;
-CREATE INDEX IF NOT EXISTS vr_student_idx ON public.vacation_requests (student_id, start_date DESC);
-CREATE INDEX IF NOT EXISTS vr_pending_idx ON public.vacation_requests (start_date)
-  WHERE status = 'pending';
-
-DROP TRIGGER IF EXISTS trg_vr_upd ON public.vacation_requests;
-CREATE TRIGGER trg_vr_upd BEFORE UPDATE ON public.vacation_requests
-  FOR EACH ROW EXECUTE FUNCTION public.set_updated_at();
-
--- ============================================================================
--- 3. BALANCES
--- ============================================================================
--- weeks_used is maintained from approved requests rather than incremented by
--- the application, so a denied-then-reapproved request cannot double-count.
-
-CREATE TABLE IF NOT EXISTS public.vacation_balances (
-  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-  student_id UUID NOT NULL REFERENCES public.students(id) ON DELETE CASCADE,
-  policy_year INTEGER NOT NULL,
-  policy_id UUID REFERENCES public.vacation_policies(id) ON DELETE SET NULL,
-
-  weeks_allotted NUMERIC(4,2) NOT NULL DEFAULT 0,
-  weeks_used NUMERIC(4,2) NOT NULL DEFAULT 0,
-  weeks_remaining NUMERIC(5,2) GENERATED ALWAYS AS (weeks_allotted - weeks_used) STORED,
-
-  -- Administrative override of the allotment, with its justification.
-  override_weeks NUMERIC(4,2),
-  override_reason TEXT,
-  overridden_by UUID REFERENCES auth.users(id) ON DELETE SET NULL,
-
-  updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-  UNIQUE (student_id, policy_year)
-);
-
-GRANT SELECT, INSERT, UPDATE ON public.vacation_balances TO authenticated;
-GRANT ALL ON public.vacation_balances TO service_role;
-ALTER TABLE public.vacation_balances ENABLE ROW LEVEL SECURITY;
-CREATE INDEX IF NOT EXISTS vb_student_idx ON public.vacation_balances (student_id);
-CREATE INDEX IF NOT EXISTS vb_policy_idx ON public.vacation_balances (policy_id);
-
--- Which vacation year a date belongs to, given the policy's reset point.
-CREATE OR REPLACE FUNCTION public.vacation_year_for(_student UUID, _on DATE)
-RETURNS INTEGER
-LANGUAGE plpgsql STABLE SECURITY DEFINER SET search_path = public AS $$
-DECLARE
-  p public.vacation_policies%ROWTYPE;
-  reset DATE;
-BEGIN
-  SELECT * INTO p FROM public.resolve_vacation_policy(_student);
-  IF p.id IS NULL THEN RETURN EXTRACT(YEAR FROM _on)::int; END IF;
-  reset := make_date(EXTRACT(YEAR FROM _on)::int, p.reset_month, p.reset_day);
-  RETURN CASE WHEN _on >= reset
-              THEN EXTRACT(YEAR FROM _on)::int
-              ELSE EXTRACT(YEAR FROM _on)::int - 1 END;
-END;
-$$;
-
-CREATE OR REPLACE FUNCTION public.recalc_vacation_balance(_student UUID, _year INTEGER)
-RETURNS VOID
-LANGUAGE plpgsql SECURITY DEFINER SET search_path = public AS $$
-DECLARE
-  p     public.vacation_policies%ROWTYPE;
-  used  NUMERIC;
-  bal   public.vacation_balances%ROWTYPE;
-BEGIN
-  SELECT * INTO p FROM public.resolve_vacation_policy(_student);
-
-  SELECT COALESCE(SUM(weeks_charged), 0) INTO used
-  FROM public.vacation_requests
-  WHERE student_id = _student AND policy_year = _year AND status = 'approved';
-
-  SELECT * INTO bal FROM public.vacation_balances
-  WHERE student_id = _student AND policy_year = _year;
-
-  INSERT INTO public.vacation_balances
-    (student_id, policy_year, policy_id, weeks_allotted, weeks_used)
-  VALUES (_student, _year, p.id,
-          COALESCE(bal.override_weeks, p.weeks_per_year, 0), used)
-  ON CONFLICT (student_id, policy_year) DO UPDATE
-    SET weeks_used     = EXCLUDED.weeks_used,
-        weeks_allotted = COALESCE(public.vacation_balances.override_weeks,
-                                  EXCLUDED.weeks_allotted),
-        policy_id      = EXCLUDED.policy_id,
-        updated_at     = now();
-END;
-$$;
-
-CREATE OR REPLACE FUNCTION public.sync_vacation_balance()
-RETURNS TRIGGER LANGUAGE plpgsql SECURITY DEFINER SET search_path = public AS $$
-BEGIN
-  IF TG_OP = 'DELETE' THEN
-    PERFORM public.recalc_vacation_balance(OLD.student_id, OLD.policy_year);
-    RETURN OLD;
-  END IF;
-
-  -- Stamp the year and the billability snapshot on the way in.
-  IF TG_OP = 'INSERT' AND NEW.policy_year IS NULL THEN
-    NEW.policy_year := public.vacation_year_for(NEW.student_id, NEW.start_date);
-  END IF;
-
-  PERFORM public.recalc_vacation_balance(NEW.student_id, NEW.policy_year);
-  IF TG_OP = 'UPDATE' AND OLD.policy_year IS DISTINCT FROM NEW.policy_year THEN
-    PERFORM public.recalc_vacation_balance(NEW.student_id, OLD.policy_year);
-  END IF;
-  RETURN NEW;
-END;
-$$;
-
-DROP TRIGGER IF EXISTS trg_vr_balance ON public.vacation_requests;
-CREATE TRIGGER trg_vr_balance AFTER INSERT OR UPDATE OR DELETE ON public.vacation_requests
-  FOR EACH ROW EXECUTE FUNCTION public.sync_vacation_balance();
-
--- Default policy_year and tuition_due from the resolved policy at insert.
-CREATE OR REPLACE FUNCTION public.default_vacation_request()
-RETURNS TRIGGER LANGUAGE plpgsql SECURITY DEFINER SET search_path = public AS $$
-DECLARE
-  p public.vacation_policies%ROWTYPE;
-BEGIN
-  IF NEW.policy_year IS NULL THEN
-    NEW.policy_year := public.vacation_year_for(NEW.student_id, NEW.start_date);
-  END IF;
-  SELECT * INTO p FROM public.resolve_vacation_policy(NEW.student_id);
-  IF p.id IS NOT NULL AND TG_OP = 'INSERT' THEN
-    NEW.tuition_due := p.tuition_due_during_vacation;
-    IF NOT p.partial_weeks_allowed THEN
-      -- Round part-weeks up to whole weeks when the policy forbids partials.
-      NEW.weeks_charged := CEIL(NEW.weeks_charged);
-    END IF;
-  END IF;
-  RETURN NEW;
-END;
-$$;
-
-DROP TRIGGER IF EXISTS trg_vr_defaults ON public.vacation_requests;
-CREATE TRIGGER trg_vr_defaults BEFORE INSERT ON public.vacation_requests
-  FOR EACH ROW EXECUTE FUNCTION public.default_vacation_request();
-
--- ============================================================================
--- 4. POLICIES
--- ============================================================================
-
-DROP POLICY IF EXISTS "vacation policies read" ON public.vacation_policies;
-CREATE POLICY "vacation policies read" ON public.vacation_policies FOR SELECT TO authenticated
-  USING (TRUE);
-DROP POLICY IF EXISTS "vacation policies manage" ON public.vacation_policies;
-CREATE POLICY "vacation policies manage" ON public.vacation_policies FOR ALL TO authenticated
-  USING (public.is_org_admin()) WITH CHECK (public.is_org_admin());
-
-DROP POLICY IF EXISTS "vacation requests read" ON public.vacation_requests;
-CREATE POLICY "vacation requests read" ON public.vacation_requests FOR SELECT TO authenticated
-  USING (public.can_access_student(student_id) OR public.is_auditor());
-
--- Parents may request; only staff who can manage the student may approve, which
--- is why approval fields sit behind the manage policy below.
-DROP POLICY IF EXISTS "vacation requests insert" ON public.vacation_requests;
-CREATE POLICY "vacation requests insert" ON public.vacation_requests FOR INSERT TO authenticated
-  WITH CHECK (public.is_parent_of(student_id) OR public.can_manage_student(student_id));
-
-DROP POLICY IF EXISTS "vacation requests manage" ON public.vacation_requests;
-CREATE POLICY "vacation requests manage" ON public.vacation_requests FOR UPDATE TO authenticated
-  USING (public.can_manage_student(student_id)) WITH CHECK (public.can_manage_student(student_id));
-
-DROP POLICY IF EXISTS "vacation requests delete" ON public.vacation_requests;
-CREATE POLICY "vacation requests delete" ON public.vacation_requests FOR DELETE TO authenticated
-  USING (public.can_manage_student(student_id));
-
-DROP POLICY IF EXISTS "vacation balances read" ON public.vacation_balances;
-CREATE POLICY "vacation balances read" ON public.vacation_balances FOR SELECT TO authenticated
-  USING (public.can_access_student(student_id) OR public.is_auditor());
-DROP POLICY IF EXISTS "vacation balances manage" ON public.vacation_balances;
-CREATE POLICY "vacation balances manage" ON public.vacation_balances FOR ALL TO authenticated
-  USING (public.can_manage_student(student_id)) WITH CHECK (public.can_manage_student(student_id));