feat: unsnooze command for resuming snoozed alarms

test/snooze.bats

@@ -91,3 +91,64 @@ load test_helper
   _line="$(cat "${NAG_DIR}/snoozed")"
   [[ "${_line}" == work$'\t'* ]]
 }
+
+@test "unsnooze by ID removes entry from snoozed file" {
+  run_nag at "tomorrow 3pm" "take a break"
+  run_nag snooze 1
+  run_nag unsnooze 1
+  [ "${status}" -eq 0 ]
+  [[ "${output}" =~ "Unsnoozed [1]" ]]
+  ! grep -q "^1" "${NAG_DIR}/snoozed" 2>/dev/null
+}
+
+@test "unsnooze all removes snoozed file" {
+  run_nag snooze all
+  run_nag unsnooze all
+  [ "${status}" -eq 0 ]
+  [[ "${output}" =~ "Unsnoozed all" ]]
+  [ ! -f "${NAG_DIR}/snoozed" ]
+}
+
+@test "unsnooze all when nothing snoozed says so" {
+  run_nag unsnooze all
+  [ "${status}" -eq 0 ]
+  [[ "${output}" =~ "Nothing is snoozed" ]]
+}
+
+@test "unsnooze with no args fails" {
+  run_nag unsnooze
+  [ "${status}" -eq 1 ]
+}
+
+@test "unsnooze by tag removes tag entry" {
+  run_nag at "tomorrow 3pm" "work task"
+  run_nag tag 1 work
+  run_nag snooze work
+  run_nag unsnooze work
+  [ "${status}" -eq 0 ]
+  [[ "${output}" =~ "Unsnoozed [work]" ]]
+  ! grep -q "^work" "${NAG_DIR}/snoozed" 2>/dev/null
+}
+
+@test "unsnooze by tag requires -f" {
+  run_nag at "tomorrow 3pm" "work task"
+  run_nag tag 1 work
+  run_nag snooze work
+  run "${_NAG}" unsnooze work < /dev/null
+  [ "${status}" -eq 0 ]
+  [[ "${output}" =~ "Unsnooze" ]]
+  [[ "${output}" =~ "-f" ]]
+}
+
+@test "unsnooze nonexistent ID fails" {
+  run_nag unsnooze 99
+  [ "${status}" -eq 1 ]
+}
+
+@test "unsnooze tag that is not snoozed fails" {
+  run_nag at "tomorrow 3pm" "work task"
+  run_nag tag 1 work
+  run "${_NAG}" -f unsnooze work
+  [ "${status}" -eq 1 ]
+  [[ "${output}" =~ "not snoozed" ]]
+}