Repeats, estimates, weekly review: completing a repeating task spawns the next occurrence; estimate chips + quick-add tokens (~30m, monthly); review screen with one-tap triage; server gains repeat column and applies its idempotent schema at boot

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

server/schema.sql

@@ -25,6 +25,7 @@ create table if not exists tasks (
     defer_date   date,           -- hide from lists until this date
     priority     int not null default 4 check (priority between 1 and 4),  -- 1=urgent … 4=low
     estimate_min int check (estimate_min > 0),
+    repeat       text check (repeat in ('daily', 'weekdays', 'weekly', 'monthly', 'yearly')),
     completed_at timestamptz,
     sort_order   double precision not null default 0,
     created_at   timestamptz not null default now(),
@@ -33,3 +34,7 @@ create table if not exists tasks (
 
 create index if not exists tasks_status_idx on tasks (status);
 create index if not exists tasks_project_idx on tasks (project_id);
+
+-- Columns added after the initial deploy (create-if-not-exists won't alter).
+alter table tasks add column if not exists repeat text
+    check (repeat in ('daily', 'weekdays', 'weekly', 'monthly', 'yearly'));