Add project and todo management

backend/src/migrations.ts

@@ -435,6 +435,42 @@ export async function migrate() {
     );
   `);
 
+  await query(`
+    CREATE TABLE IF NOT EXISTS projects (
+      id BIGSERIAL PRIMARY KEY,
+      user_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+      ticket_id BIGINT NOT NULL REFERENCES tickets(id) ON DELETE CASCADE,
+      teamspace_project TEXT,
+      description TEXT NOT NULL DEFAULT '',
+      goals TEXT NOT NULL DEFAULT '',
+      starts_on DATE,
+      ends_on DATE,
+      hour_budget_minutes INTEGER,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+      updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+      UNIQUE (user_id, ticket_id),
+      CONSTRAINT projects_budget_non_negative CHECK (hour_budget_minutes IS NULL OR hour_budget_minutes >= 0),
+      CONSTRAINT projects_valid_range CHECK (starts_on IS NULL OR ends_on IS NULL OR ends_on >= starts_on)
+    );
+  `);
+
+  await query(`
+    CREATE TABLE IF NOT EXISTS ticket_todos (
+      id BIGSERIAL PRIMARY KEY,
+      user_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+      ticket_id BIGINT NOT NULL REFERENCES tickets(id) ON DELETE CASCADE,
+      title TEXT NOT NULL,
+      description TEXT NOT NULL DEFAULT '',
+      priority TEXT NOT NULL DEFAULT 'medium',
+      status TEXT NOT NULL DEFAULT 'open',
+      completed_at TIMESTAMPTZ,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+      updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+      CONSTRAINT ticket_todos_priority_valid CHECK (priority IN ('low', 'medium', 'high', 'urgent')),
+      CONSTRAINT ticket_todos_status_valid CHECK (status IN ('open', 'done'))
+    );
+  `);
+
   await ensureClosureOwnership("ticket_month_closures", "month", ["ticket_id", "month"], adminId);
   await ensureClosureOwnership("month_closures", "month", ["month"], adminId);
   await ensureClosureOwnership("ticket_day_closures", "day", ["ticket_id", "day"], adminId);
@@ -450,6 +486,10 @@ export async function migrate() {
   await query("CREATE INDEX IF NOT EXISTS idx_ticket_day_closures_day ON ticket_day_closures(day);");
   await query("CREATE INDEX IF NOT EXISTS idx_ticket_day_billings_user_day ON ticket_day_billings(user_id, day);");
   await query("CREATE INDEX IF NOT EXISTS idx_ticket_day_billing_ack_user_day ON ticket_day_billing_acknowledgements(user_id, day);");
+  await query("CREATE INDEX IF NOT EXISTS idx_projects_user_ticket ON projects(user_id, ticket_id);");
+  await query("CREATE INDEX IF NOT EXISTS idx_projects_user_updated ON projects(user_id, updated_at DESC);");
+  await query("CREATE INDEX IF NOT EXISTS idx_ticket_todos_user_status_priority ON ticket_todos(user_id, status, priority);");
+  await query("CREATE INDEX IF NOT EXISTS idx_ticket_todos_ticket_user ON ticket_todos(ticket_id, user_id);");
   await query("CREATE INDEX IF NOT EXISTS idx_recurring_billings_user_active ON recurring_billings(user_id, active);");
   await query("UPDATE recurring_billings SET active = true WHERE active = false;");
   await query(`